diff --git a/.eslintignore b/.eslintignore index b99c263e..1e2fa4e2 100644 --- a/.eslintignore +++ b/.eslintignore @@ -1,3 +1,5 @@ packages/cli/src/testutils/* packages/cli/src/**/**/*.test.ts packages/webdriverjs/src/test/fixtures/* +packages/puppeteer/test/fixtures/* +**/dist/* diff --git a/packages/puppeteer/.eslintrc.js b/packages/puppeteer/.eslintrc.js index d70df228..040eb274 100644 --- a/packages/puppeteer/.eslintrc.js +++ b/packages/puppeteer/.eslintrc.js @@ -1,5 +1,6 @@ module.exports = { rules: { - '@typescript-eslint/no-explicit-any': 'off' + '@typescript-eslint/no-explicit-any': 'off', + '@typescript-eslint/no-use-before-define': 'off' } }; diff --git a/packages/puppeteer/package-lock.json b/packages/puppeteer/package-lock.json index 6dc16486..bb18b89f 100644 --- a/packages/puppeteer/package-lock.json +++ b/packages/puppeteer/package-lock.json @@ -1,113 +1,3280 @@ { "name": "@axe-core/puppeteer", "version": "4.2.2", - "lockfileVersion": 1, + "lockfileVersion": 2, 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"is-core-module": "^2.1.0", + "is-core-module": "^2.2.0", "path-parse": "^1.0.6" } }, @@ -1965,9 +5144,9 @@ }, "dependencies": { "glob": { - "version": "7.1.6", - "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz", - "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==", + "version": "7.1.7", + "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.7.tgz", + "integrity": "sha512-OvD9ENzPLbegENnYP5UUfJIirTg4+XwMWGaQfQTY0JenxNvvIKP3U3/tAQSPIu/lHxXYSZmpXlUHeqAIdKzBLQ==", "dev": true, "requires": { "fs.realpath": "^1.0.0", @@ -1993,9 +5172,9 @@ "dev": true }, "semver": { - "version": "5.7.1", - "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz", - "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==", + "version": "6.3.0", + "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz", + "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==", "dev": true }, "send": { @@ -2148,9 +5327,9 @@ } }, "spdx-license-ids": { - 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"version": "7.1.6", - "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz", - "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==", + "version": "7.1.7", + "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.7.tgz", + "integrity": "sha512-OvD9ENzPLbegENnYP5UUfJIirTg4+XwMWGaQfQTY0JenxNvvIKP3U3/tAQSPIu/lHxXYSZmpXlUHeqAIdKzBLQ==", "dev": true, "requires": { "fs.realpath": "^1.0.0", @@ -2434,12 +5613,13 @@ "version": "7.4.6", "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz", "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==", - "dev": true + "dev": true, + "requires": {} }, "y18n": { - "version": "4.0.1", - "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.1.tgz", - "integrity": "sha512-wNcy4NvjMYL8gogWWYAO7ZFWFfHcbdbE57tZO8e4cbpj8tfUcwrwqSl3ad8HxpYWCdXcJUCeKKZS62Av1affwQ==", + "version": "4.0.3", + "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.3.tgz", + "integrity": "sha512-JKhqTOwSrqNA1NY5lSztJ1GrBiUodLMmIZuLiDaMRJ+itFd+ABVE8XBjOvIWL+rSqNDC74LCSFmlb/U4UZ4hJQ==", "dev": true }, "yallist": { diff --git a/packages/puppeteer/package.json b/packages/puppeteer/package.json index f437815f..2bc978be 100644 --- a/packages/puppeteer/package.json +++ b/packages/puppeteer/package.json @@ -30,6 +30,7 @@ "@types/puppeteer": "^1.20.8", "@types/sinon": "^7.0.13", "@types/test-listen": "^1.1.0", + "axe-test-fixtures": "github:dequelabs/axe-test-fixtures#v1", "chai": "^4.3.4", "express": "^4.16.4", "mocha": "^5.2.0", @@ -42,7 +43,7 @@ "typescript": "^4.3.5" }, "dependencies": { - "axe-core": "^4.2.3" + "axe-core": "^4.3.2" }, "peerDependencies": { "puppeteer": ">=1.10.0 <= 10" diff --git a/packages/puppeteer/src/axePartialRunner.ts b/packages/puppeteer/src/axePartialRunner.ts new file mode 100644 index 00000000..4d31de58 --- /dev/null +++ b/packages/puppeteer/src/axePartialRunner.ts @@ -0,0 +1,52 @@ +import * as axe from 'axe-core'; + +export type PartialResults = Parameters[0]; + +/** + * This class parallelizes the async calls to axe.runPartial. + * + * In this project, most async calls needs to block execution, such as + * the axeGetFrameContext() and getChildFrame() and calls. + * + * Unlike those calls, axe.runPartial() calls must run in parallel, so that + * frame tests don't wait for each other. This is necessary to minimize the time + * between when axe-core finds a frame, and when it is tested. + */ +export class AxePartialRunner { + private partialPromise: Promise; + private childRunners: Array = []; + + constructor( + partialPromise: Promise, + private initiator: boolean = false + ) { + this.partialPromise = caught(partialPromise); + } + + public addChildResults(childResultRunner: AxePartialRunner | null): void { + this.childRunners.push(childResultRunner); + } + + public async getPartials(): Promise { + try { + const parentPartial = await this.partialPromise; + const childPromises = this.childRunners.map(childRunner => { + return childRunner ? caught(childRunner.getPartials()) : [null]; + }); + const childPartials = (await Promise.all(childPromises)).flat(1); + return [parentPartial, ...childPartials]; + } catch (e) { + if (this.initiator) { + throw e; + } + return [null]; + } + } +} + +// Utility to tell NodeJS not to worry about catching promise errors async. +// See: https://stackoverflow.com/questions/40920179/should-i-refrain-from-handling-promise-rejection-asynchronously +export const caught = ((f: () => void) => { + return (p: Promise): Promise => (p.catch(f), p); + /* eslint-disable @typescript-eslint/no-empty-function */ +})(() => {}); diff --git a/packages/puppeteer/src/axePuppeteer.ts b/packages/puppeteer/src/axePuppeteer.ts index dd25a87e..aca10cbc 100644 --- a/packages/puppeteer/src/axePuppeteer.ts +++ b/packages/puppeteer/src/axePuppeteer.ts @@ -1,139 +1,39 @@ -import * as Axe from 'axe-core'; -import { ElementHandle, Frame, JSONObject, Page } from 'puppeteer'; -import { pageIsLoaded, runAxe, configureAxe } from './browser'; -import { AnalyzeCB } from './types'; - -function arrayify(src: T | T[]): T[] { - if (!Array.isArray(src)) { - return [src]; - } - return src; -} - -interface IInjectAxeArgs { - source?: string | Function; - selector: string; - logOnError?: boolean; - args?: any[]; -} - -function injectJSModule(frame: Frame): Promise | void> { - return frame - .addScriptTag({ - path: require.resolve('axe-core') - }) - .then(() => undefined); -} - -function injectJSSource( - frame: Frame, - source: string | Function, - args: any[] = [] -): Promise { - return frame.evaluate(source as any, ...args); -} - -async function injectJS( - frame: Frame | undefined, - { source, selector, logOnError, args }: IInjectAxeArgs -): Promise { - if (!frame) { - return; - } - const frames = await frame.$$(selector); - const injections = []; - for (const frameElement of frames) { - const subFrame = await frameElement.contentFrame(); - const p = injectJS(subFrame as Frame, { - source, - selector, - args, - logOnError: true - }); - injections.push(p); - } - - const reportError = (): void => { - // tslint:disable-next-line:no-console - console.error(`Failed to inject axe-core into frame (${frame.url()})`); - }; - - let injectP: Promise | void>; - if (!source) { - injectP = injectJSModule(frame); - } else { - injectP = injectJSSource(frame, source, args); - } - - if (logOnError) { - // Just print diagnostic if a child frame fails to load. - // Don't fully error since we aren't the top-level frame - injectP = injectP.catch(reportError); - } - - injections.push(injectP); - // Fix return type since we don't care about the value - return Promise.all(injections).then(() => undefined); -} - -function isPage(pageFrame: Page | Frame): pageFrame is Page { - return (pageFrame as any).mainFrame !== undefined; -} - -function getFrame(pageFrame: Page | Frame): Frame { - if (isPage(pageFrame)) { - return pageFrame.mainFrame(); - } - return pageFrame; -} - -async function ensureFrameReady(frame: Frame): Promise { - // Wait so that we know there is an execution context. - // Assume that if we have an html node we have an execution context. - await frame.waitForSelector('html'); - - // Check if the page is loaded. - const pageReady = await frame.evaluate(pageIsLoaded); - - if (!pageReady) { - throw new Error('Page/Frame is not ready'); - } -} - -function normalizeContext( - includes: string[][], - excludes: string[][] -): Axe.ElementContext | null { - if (!excludes.length && !includes.length) { - return null; - } - - const ctx: Axe.ElementContext = {}; - if (excludes.length) { - ctx.exclude = excludes; - } - if (includes.length) { - ctx.include = includes; - } - - return ctx; -} +import { RunOptions, ContextObject, Spec, AxeResults } from 'axe-core'; +import { Frame, JSONArray, JSONObject, Page } from 'puppeteer'; +import { + axeGetFrameContext, + axeRunPartial, + axeFinishRun, + axeConfigure, + axeRunLegacy, + axeRunPartialSupport +} from './browser'; +import { AnalyzeCB, PartialResults } from './types'; +import { iframeSelector, injectJS } from './legacy'; +import { AxePartialRunner } from './axePartialRunner'; +import { + arrayify, + getChildFrame, + getFrame, + normalizeContext, + frameSourceInject +} from './utils'; export class AxePuppeteer { private frame: Frame; - private source?: string; + private axeSource?: string; private includes: string[][]; private excludes: string[][]; - private axeOptions: Axe.RunOptions | null; - private config: Axe.Spec | null; + private axeOptions: RunOptions; + private config: Spec | null; private disabledFrameSelectors: string[]; constructor(pageFrame: Page | Frame, source?: string) { this.frame = getFrame(pageFrame); - this.source = source; + this.axeSource = source; this.includes = []; this.excludes = []; - this.axeOptions = null; + this.axeOptions = {}; this.config = null; this.disabledFrameSelectors = []; } @@ -150,14 +50,13 @@ export class AxePuppeteer { return this; } - public options(options: Axe.RunOptions): this { + public options(options: RunOptions): this { this.axeOptions = options; return this; } public withRules(rules: string | string[]): this { rules = arrayify(rules); - if (!this.axeOptions) { this.axeOptions = {}; } @@ -172,7 +71,6 @@ export class AxePuppeteer { public withTags(tags: string | string[]): this { tags = arrayify(tags); - if (!this.axeOptions) { this.axeOptions = {}; } @@ -187,11 +85,6 @@ export class AxePuppeteer { public disableRules(rules: string | string[]): this { rules = arrayify(rules); - - if (!this.axeOptions) { - this.axeOptions = {}; - } - interface IRulesObj { [id: string]: { enabled: boolean; @@ -204,11 +97,10 @@ export class AxePuppeteer { }; } this.axeOptions.rules = newRules; - return this; } - public configure(config: Axe.Spec): this { + public configure(config: Spec): this { // Cast to any because we are asserting for javascript provided argument. if (typeof (config as any) !== 'object') { throw new Error( @@ -225,34 +117,15 @@ export class AxePuppeteer { return this; } - public async analyze(): Promise; + public async analyze(): Promise; public async analyze( callback?: T - ): Promise; + ): Promise; public async analyze( callback?: T - ): Promise { + ): Promise { try { - await ensureFrameReady(this.frame); - - await injectJS(this.frame, { - source: this.source, - selector: this.iframeSelector() - }); - - await injectJS(this.frame, { - source: configureAxe, - selector: this.iframeSelector(), - args: [this.config] - }); - - const context = normalizeContext(this.includes, this.excludes); - const axeResults = await this.frame.evaluate( - runAxe, - context as JSONObject, - this.axeOptions as JSONObject - ); - + const axeResults = await this.analyzePromise(); if (callback) { callback(null, axeResults); } @@ -266,11 +139,79 @@ export class AxePuppeteer { } } - private iframeSelector(): string { - let selector = 'iframe'; - for (const disabledFrameSelector of this.disabledFrameSelectors) { - selector += `:not(${disabledFrameSelector})`; + private async analyzePromise(): Promise { + const { frame, axeSource, config } = this; + const context = normalizeContext( + this.includes, + this.excludes, + this.disabledFrameSelectors + ); + await frameSourceInject(frame, axeSource, config); + + const runPartialSupported = await frame.evaluate(axeRunPartialSupport); + if (runPartialSupported !== true) { + return this.runLegacy(context); + } + const partialRunner = await this.runPartialRecursive(frame, context); + const partials = await partialRunner.getPartials(); + return this.finishRun(partials); + } + + private async runPartialRecursive( + frame: Frame, + context: ContextObject + ): Promise { + // IMPORTANT: axeGetFrameContext MUST be called before axeRunPartial + const frameContexts = await frame.evaluate(axeGetFrameContext, context); + + // Start testing the parent frame - don't await, so runs are in parallel + const options = this.axeOptions as JSONObject; + const partialPromise = frame.evaluate(axeRunPartial, context, options); + const initiator = frame === this.frame; + const axePartialRunner = new AxePartialRunner(partialPromise, initiator); + + // Recursively start testing child frames + for (const { frameSelector, frameContext } of frameContexts) { + let childResults: AxePartialRunner | null = null; + try { + const childFrame = await getChildFrame(frame, frameSelector); + if (childFrame) { + await frameSourceInject(childFrame, this.axeSource, this.config); + childResults = await this.runPartialRecursive( + childFrame, + frameContext + ); + } + } catch { + /* do nothing */ + } + axePartialRunner.addChildResults(childResults); } - return selector; + return axePartialRunner; + } + + private async finishRun(partialResults: PartialResults): Promise { + // AxeResults + const options = this.axeOptions; + return await this.frame.evaluate( + axeFinishRun, + partialResults as JSONArray, + options as JSONObject + ); + } + + private async runLegacy(context: ContextObject): Promise { + const options = this.axeOptions as JSONObject; + const selector = iframeSelector(this.disabledFrameSelectors); + const source = this.axeSource; + await injectJS(this.frame, { source, selector }); + + await injectJS(this.frame, { + source: axeConfigure, + selector, + args: [this.config] + }); + + return this.frame.evaluate(axeRunLegacy, context, options); } } diff --git a/packages/puppeteer/src/browser.ts b/packages/puppeteer/src/browser.ts index ab3c0113..a6642808 100644 --- a/packages/puppeteer/src/browser.ts +++ b/packages/puppeteer/src/browser.ts @@ -1,5 +1,6 @@ -// This module encapsulates the browser enviromnent +// This module encapsulates the browser environment import * as Axe from 'axe-core'; +import { PartialResults } from './types'; // Expect axe to be set up. // Tell Typescript that there should be a global variable called `axe` that follows @@ -11,25 +12,54 @@ declare global { } } -// Defined at top-level to clarify that it can't capture variables from outer scope. -export function runAxe( - context?: Axe.ElementContext, - options?: Axe.RunOptions -): Promise { - return window.axe.run(context || document, options || {}); -} - export function pageIsLoaded(): boolean { return document.readyState === 'complete'; } -export function configureAxe(config?: Axe.Spec): void { +export function axeRunPartialSupport(): boolean { + return typeof window.axe.runPartial === 'function'; +} + +export function axeConfigure(config?: Axe.Spec): void { if (config) { window.axe.configure(config); } - window.axe.configure({ allowedOrigins: [''], branding: { application: 'axe-puppeteer' } }); } + +export function axeGetFrameContext( + context: Axe.ElementContext +): Axe.FrameContext[] { + return window.axe.utils.getFrameContexts(context); +} + +export function axeShadowSelect( + axeSelector: Axe.CrossTreeSelector +): Element | null { + return window.axe.utils.shadowSelect(axeSelector); +} + +export function axeRunPartial( + context: Axe.ContextObject, + options: Axe.RunOptions +): Promise { + return window.axe.runPartial(context, options); +} + +export function axeFinishRun( + partials: PartialResults, + options: Axe.RunOptions +): Promise { + return window.axe.finishRun(partials, options); +} + +// Defined at top-level to clarify that it can't capture variables from outer scope. +export function axeRunLegacy( + context?: Axe.ContextObject, + options?: Axe.RunOptions +): Promise { + return window.axe.run(context || document, options || {}); +} diff --git a/packages/puppeteer/src/index.ts b/packages/puppeteer/src/index.ts index 314837ea..9df41f2f 100644 --- a/packages/puppeteer/src/index.ts +++ b/packages/puppeteer/src/index.ts @@ -1,5 +1,5 @@ import { AxePuppeteer } from './axePuppeteer'; -import { loadPage } from './owning'; +import { loadPage } from './load-page'; import { AnalyzeCB, IPageOptions } from './types'; export { AnalyzeCB, AxePuppeteer, loadPage, IPageOptions }; export default AxePuppeteer; diff --git a/packages/puppeteer/src/legacy.ts b/packages/puppeteer/src/legacy.ts new file mode 100644 index 00000000..675e37a6 --- /dev/null +++ b/packages/puppeteer/src/legacy.ts @@ -0,0 +1,73 @@ +import { Frame, ElementHandle } from 'puppeteer'; + +interface IInjectAxeArgs { + source?: string | Function; + selector: string; + logOnError?: boolean; + args?: any[]; +} + +export async function injectJS( + frame: Frame | undefined, + { source, selector, logOnError, args }: IInjectAxeArgs +): Promise { + if (!frame) { + return; + } + const frames = await frame.$$(selector); + const injections = []; + for (const frameElement of frames) { + const subFrame = await frameElement.contentFrame(); + const p = injectJS(subFrame as Frame, { + source, + selector, + args, + logOnError: true + }); + injections.push(p); + } + + const reportError = (): void => { + // tslint:disable-next-line:no-console + console.error(`Failed to inject axe-core into frame (${frame.url()})`); + }; + + let injectP: Promise | void>; + if (!source) { + injectP = injectJSModule(frame); + } else { + injectP = injectJSSource(frame, source, args); + } + + if (logOnError) { + // Just print diagnostic if a child frame fails to load. + // Don't fully error since we aren't the top-level frame + injectP = injectP.catch(reportError); + } + + injections.push(injectP); + // Fix return type since we don't care about the value + return Promise.all(injections).then(() => undefined); +} + +async function injectJSModule(frame: Frame): Promise { + await frame.addScriptTag({ + path: require.resolve('axe-core') + }); +} + +function injectJSSource( + frame: Frame, + source: string | Function, + args: any[] = [] +): Promise { + return frame.evaluate(source as any, ...args); +} + +export function iframeSelector(disabledFrameSelectors: string[]): string { + let selector = 'iframe'; + for (const disabledFrameSelector of disabledFrameSelectors) { + selector += `:not(${disabledFrameSelector})`; + } + return selector; +} diff --git a/packages/puppeteer/src/owning.ts b/packages/puppeteer/src/load-page.ts similarity index 93% rename from packages/puppeteer/src/owning.ts rename to packages/puppeteer/src/load-page.ts index 6963d2fc..d40d3a09 100644 --- a/packages/puppeteer/src/owning.ts +++ b/packages/puppeteer/src/load-page.ts @@ -3,6 +3,21 @@ import { Browser, Page } from 'puppeteer'; import { AxePuppeteer } from './axePuppeteer'; import { AnalyzeCB, IPageOptions } from './types'; +/** + * Go to a url, returning an instance of AxePuppeteer once completed + */ +export async function loadPage( + browser: Browser, + url: string, + pageOpts: IPageOptions = {} +): Promise { + const page = await browser.newPage(); + await page.setBypassCSP(true); + await page.goto(url, pageOpts.opts); + + return new OwningAxePuppeteer(page, pageOpts.source); +} + // An instance of AxePuppeteer that owns a page and thus closes it after running axe. class OwningAxePuppeteer extends AxePuppeteer { private page: Page; @@ -26,16 +41,3 @@ class OwningAxePuppeteer extends AxePuppeteer { } } } - -export async function loadPage( - browser: Browser, - url: string, - pageOpts: IPageOptions = {} -): Promise { - const page = await browser.newPage(); - await page.setBypassCSP(true); - - await page.goto(url, pageOpts.opts); - - return new OwningAxePuppeteer(page, pageOpts.source); -} diff --git a/packages/puppeteer/src/types.ts b/packages/puppeteer/src/types.ts index 6a541fe7..6ddb2de9 100644 --- a/packages/puppeteer/src/types.ts +++ b/packages/puppeteer/src/types.ts @@ -1,4 +1,5 @@ -import * as Axe from 'axe-core'; +import type * as Axe from 'axe-core'; +import * as axe from 'axe-core'; export type AnalyzeCB = (err: Error | null, result?: Axe.AxeResults) => void; @@ -6,3 +7,5 @@ export interface IPageOptions { opts?: any; source?: string; } + +export type PartialResults = Parameters[0]; diff --git a/packages/puppeteer/src/utils.ts b/packages/puppeteer/src/utils.ts new file mode 100644 index 00000000..2af49cb6 --- /dev/null +++ b/packages/puppeteer/src/utils.ts @@ -0,0 +1,77 @@ +import * as fs from 'fs'; +import * as Axe from 'axe-core'; +import { Page, Frame, JSONObject } from 'puppeteer'; +import { axeConfigure, axeShadowSelect } from './browser'; +import { pageIsLoaded } from './browser'; + +export async function frameSourceInject( + frame: Frame, + source: string | undefined, + config: Axe.Spec | null +): Promise { + await assertFrameReady(frame); + if (!source) { + const pathFile = require.resolve('axe-core'); + source = fs.readFileSync(pathFile, 'utf8'); + } + await frame.evaluate(source); + await frame.evaluate(axeConfigure, config as JSONObject); +} + +export function arrayify(src: T | T[]): T[] { + if (!Array.isArray(src)) { + return [src]; + } + return src; +} + +export function normalizeContext( + includes: string[][], + excludes: string[][], + disabledFrameSelectors: string[] +): Axe.ContextObject { + const base: Axe.ContextObject = { + exclude: [] + }; + if (excludes.length && Array.isArray(base.exclude)) { + base.exclude.push(...excludes); + } + if (disabledFrameSelectors.length && Array.isArray(base.exclude)) { + const frameExcludes = disabledFrameSelectors.map(frame => [frame, '*']); + base.exclude.push(...frameExcludes); + } + if (includes.length) { + base.include = includes; + } + return base; +} + +export function getFrame(pageFrame: Page | Frame): Frame { + if ('mainFrame' in pageFrame) { + return pageFrame.mainFrame(); + } + return pageFrame; +} + +export async function getChildFrame( + frame: Frame, + childSelector: Axe.CrossTreeSelector +): Promise { + const frameElm = await frame.evaluateHandle(axeShadowSelect, childSelector); + return (await frameElm.asElement()?.contentFrame()) || null; +} + +export async function assertFrameReady(frame: Frame): Promise { + // Wait so that we know there is an execution context. + // Assume that if we have an html node we have an execution context. + // Check if the page is loaded. + let pageReady = false; + try { + pageReady = await frame.evaluate(pageIsLoaded); + } catch { + /* ignore */ + } + if (!pageReady) { + throw new Error('Page/Frame is not ready'); + } +} diff --git a/packages/puppeteer/test/axePuppeteer.test.ts b/packages/puppeteer/test/axePuppeteer.test.ts new file mode 100644 index 00000000..f1e2e7e7 --- /dev/null +++ b/packages/puppeteer/test/axePuppeteer.test.ts @@ -0,0 +1,705 @@ +import 'mocha'; +import Axe from 'axe-core'; +import * as fs from 'fs'; +import * as path from 'path'; +import { assert, expect } from 'chai'; +import Puppeteer, { Browser, Page } from 'puppeteer'; +import { createServer, Server } from 'http'; +import * as sinon from 'sinon'; +import testListen from 'test-listen'; +import AxePuppeteer from '../src/index'; +import { + startServer, + puppeteerArgs, + expectAsync, + expectAsyncToNotThrow +} from './utils'; + +type SinonSpy = sinon.SinonSpy; + +declare global { + interface Window { + parallel?: boolean; + } +} + +describe('AxePuppeteer', function () { + let browser: Browser; + let page: Page; + let server: Server; + let addr: string; + this.timeout(10000); + + let axeSource: string; + let axeCrasherSource: string; + + before(async () => { + const axePath = require.resolve('axe-core'); + axeSource = fs.readFileSync(axePath, 'utf8'); + const axeCrashPath = path.resolve( + __dirname, + './fixtures/external/axe-crasher.js' + ); + axeCrasherSource = fs.readFileSync(axeCrashPath, 'utf8'); + }); + + before(async () => { + const args = puppeteerArgs(); + browser = await Puppeteer.launch({ args }); + ({ server, addr } = await startServer()); + }); + + after(async () => { + server.close(); + await browser.close(); + }); + + beforeEach(async () => { + page = await browser.newPage(); + }); + + afterEach(async () => { + await page.close(); + }); + + it('runs in parallel', async () => { + // Just to prove Puppeteer runs scripts in parallel, + // and so axe-core/puppeteer should too + await page.goto(`${addr}/external/index.html`); + const p1 = page.evaluate(() => { + window.parallel = true; + return new Promise(res => { + setTimeout(() => { + window.parallel = false; + res('parallel'); + }, 1000); + }); + }); + const p2 = page.evaluate(() => window.parallel); + const out = await Promise.all([p1, p2]); + expect(out).to.deep.equal(['parallel', true]); + }); + + describe('constructor', () => { + it('accepts a Page', async () => { + await page.goto(`${addr}/external/index.html`); + const axePup = new AxePuppeteer(page); + await expectAsyncToNotThrow(() => axePup.analyze()); + }); + + it('accepts a Frame', async () => { + await page.goto(`${addr}/external/index.html`); + const axePup = new AxePuppeteer(page.mainFrame()); + await expectAsyncToNotThrow(() => axePup.analyze()); + }); + + it('accepts custom axe-core source', async () => { + const axeSource = ` + window.axe = { + run: () => new Promise(resolve => resolve({})), + configure: () => {} + } + `; + await page.goto(`${addr}/external/index.html`); + const evalSpy: SinonSpy = sinon.spy(page.mainFrame(), 'evaluate'); + await new AxePuppeteer(page, axeSource).analyze(); + assert(evalSpy.calledWith(axeSource)); + }); + }); + + describe('.analyze()', () => { + it('sets the helpUrl application string', async () => { + await page.goto(`${addr}/external/iframes/baz.html`); + const { violations } = await new AxePuppeteer(page) + .withRules('label') + .analyze(); + assert.include(violations[0].helpUrl, 'application=axe-puppeteer'); + }); + + describe('returned promise', () => { + it("returns results through analyze's promise", async () => { + await page.goto(`${addr}/external/index.html`); + const results = await new AxePuppeteer(page) + .withRules('label') + .analyze(); + expect(results).to.exist; + expect(results).to.have.property('passes'); + expect(results).to.have.property('incomplete'); + expect(results).to.have.property('inapplicable'); + expect(results).to.have.property('violations'); + }); + + it('lets axe-core errors bubble when using promise API', async () => { + const axeSource = ` + window.axe = { + run: () => Promise.reject(new Error('boom')), + configure: () => {} + } + `; + + await page.goto(`${addr}/external/index.html`); + + const axePup = new AxePuppeteer(page, axeSource); + (await expectAsync(async () => axePup.analyze())).to.throw('boom'); + }); + }); + + describe('analyze callback', () => { + it('returns results through the callback if passed', done => { + page.goto(`${addr}/external/index.html`).then(() => { + new AxePuppeteer(page).analyze((err, results) => { + try { + expect(err).to.be.null; + + expect(results).to.exist; + expect(results).to.have.property('passes'); + expect(results).to.have.property('incomplete'); + expect(results).to.have.property('inapplicable'); + expect(results).to.have.property('violations'); + done(); + } catch (e) { + done(e); + } + }); + }); + }); + + it('passes axe-core errors when using callback API', async function () { + const axeSource = ` + window.axe = { + run: () => Promise.reject(new Error('boom')), + configure: () => {} + } + `; + + await page.goto(`${addr}/external/index.html`); + await new AxePuppeteer(page, axeSource).analyze(err => { + expect(err) + .to.exist.and.be.instanceof(Error) + .and.have.property('message') + .that.includes('boom'); + }); + }); + }); + + describe('error reporting', () => { + it('throws if axe errors out on the top window', done => { + page + .goto(`${addr}/external/crash.html`) + .then(() => { + return new AxePuppeteer( + page, + axeSource + axeCrasherSource + ).analyze(); + }) + .then( + () => done(new Error('Expect async function to throw')), + () => done() + ); + }); + + it('throws when injecting a problematic source', done => { + page + .goto(`${addr}/crash.html`) + .then(() => { + return new AxePuppeteer(page, 'throw new Error()').analyze(); + }) + .then( + () => done(new Error('Expect async function to throw')), + () => done() + ); + }); + + it('throws when a setup fails', done => { + const brokenSource = axeSource + `;window.axe.utils = {}`; + page + .goto(`${addr}/index.html`) + .then(() => { + return new AxePuppeteer(page, brokenSource) + .withRules('label') + .analyze(); + }) + .then( + () => done(new Error(`Expect async function to throw`)), + () => done() + ); + }); + }); + + describe("when given a page that hasn't loaded", () => { + let server2: Server; + let addr2: string; + before(async () => { + server2 = createServer((req: any, res: any) => { + const html = ` + + + + + + `; + const js = 'document.write(2)'; + + if (req.url.indexOf('index') !== -1) { + res.writeHead(200, { 'Content-Type': 'text/html' }); + res.write(html); + res.end(); + } else { + setTimeout(() => { + res.writeHead(200, { + 'Content-Type': 'application/javascript' + }); + res.write(js); + res.end(); + }, 3000); + } + }); + addr2 = await testListen(server2); + }); + + after(() => { + server2.close(); + }); + + it('gives a helpful error', done => { + const gotoP = page.goto(`${addr2}/index.html`); + gotoP.catch(() => ({})); // suppress Node error + + // Delay so that page load can actually start + setTimeout(() => { + const axePup = new AxePuppeteer(page); + axePup + .analyze() + .then( + () => { + done( + 'Expect AxePuppeteer to throw when passed an unloaded page' + ); + }, + e => { + expect(e.message).to.include('not ready'); + done(); + } + ) + .catch(done); + }, 10); + }); + }); + }); + + describe('context', () => { + describe('with include and exclude', () => { + it('passes both .include and .exclude', async () => { + const axeSource = ` + window.axe = { + configure () {}, + run (context, options, config) { + if (context === document) { + return Promise.reject(new Error('Invalid context')) + } + if (context.include[0] !== '.include') { + return Promise.reject(new Error('Invalid include context')) + } + + if (context.exclude[0] !== '.exclude') { + return Promise.reject(new Error('Invalid exclude context')) + } + + return Promise.resolve({}) + } + } + `; + + await page.goto(`${addr}/context.html`); + + const axePip = new AxePuppeteer(page, axeSource) + .include('.include') + .exclude('.exclude'); + + await expectAsyncToNotThrow(() => axePip.analyze()); + }); + }); + + // See #58 + describe('excluded with an array of strings', () => { + it('properly sets context.exclude', async () => { + const expected = ['.foo', '.bar', '.baz', '.qux']; + + const axeSource = ` + window.axe = { + configure(){}, + run({ exclude }){ + return Promise.resolve({ exclude }) + } + } + `; + + await page.goto(`${addr}/context.html`); + + const axePip = new AxePuppeteer(page, axeSource) + .include('.include') + .exclude(['.foo', '.bar', '.baz', '.qux']); + + const { exclude: actual } = (await axePip.analyze()) as any; + assert.deepEqual(actual[0], expected); + }); + }); + + describe('with only include', () => { + it('adds .include to context', async () => { + const axeSource = ` + window.axe = { + configure () {}, + run (context, options, config) { + if (context === document) { + return Promise.reject(new Error('Invalid context')) + } + if (context.include[0] !== '.include') { + return Promise.reject(new Error('Invalid include context')) + } + + if (context.exclude) { + return Promise.reject(new Error('Invalid exclude context')) + } + + return Promise.resolve({}) + } + } + `; + + await page.goto(`${addr}/context.html`); + + const axePip = new AxePuppeteer(page, axeSource).include('.include'); + + await expectAsyncToNotThrow(() => axePip.analyze()); + }); + }); + + describe('with only exclude', () => { + it('adds .exclude to context', async () => { + const axeSource = ` + window.axe = { + configure () {}, + run (context, options, config) { + if (context === document) { + return Promise.reject(new Error('Invalid context')) + } + if (context.include) { + return Promise.reject(new Error('Invalid include context')) + } + + if (context.exclude[0] !== '.exclude') { + return Promise.reject(new Error('Invalid exclude context')) + } + + return Promise.resolve({}) + } + } + `; + + await page.goto(`${addr}/context.html`); + + const axePip = new AxePuppeteer(page, axeSource).exclude('.exclude'); + + await expectAsyncToNotThrow(() => axePip.analyze()); + }); + }); + + it('defaults to document', async () => { + const axeSource = ` + window.axe = { + configure () {}, + run (context, options, config) { + if (context !== document) { + return Promise.reject(new Error('Invalid context')) + } + + return Promise.resolve({}) + } + } + `; + + await page.goto(`${addr}/context.html`); + + const axePip = new AxePuppeteer(page, axeSource); + + await expectAsyncToNotThrow(() => axePip.analyze()); + }); + + describe('.disableFrame()', () => { + it('disables the given rule(s)', async () => { + await page.goto(`${addr}/external/nested-iframes.html`); + const results = await new AxePuppeteer(page) + // Ignore all frames + .disableFrame('#ifr-foo, #ifr-bar') + .disableFrame('#ifr-baz') + .analyze(); + + const labelResult = results.violations.find( + (r: Axe.Result) => r.id === 'label' + ); + expect(labelResult).to.be.undefined; + }); + }); + }); + + describe('.configure()', () => { + it('accepts custom configuration', async () => { + const config: Axe.Spec = { + checks: [ + { + evaluate: 'function () { return false }', + id: 'foo' + } + ], + rules: [ + { + all: [], + any: ['foo'], + id: 'foo', + none: [], + selector: 'html', + tags: ['wcag2aa'] + } + ] + }; + + await page.goto(`${addr}/external/index.html`); + const results = await new AxePuppeteer(page) + .configure(config) + .withRules(['foo']) + .analyze(); + + expect(results).to.have.property('passes').with.lengthOf(0); + expect(results).to.have.property('incomplete').with.lengthOf(0); + expect(results).to.have.property('inapplicable').with.lengthOf(0); + expect(results).to.have.property('violations').with.lengthOf(1); + expect(results.violations[0]).to.have.property('id', 'foo'); + }); + + it('gives a helpful error when not passed an object', () => { + const axePup = new AxePuppeteer(page); + + // Cast a string to a Spec to simulate incorrect usage with Javascript. + const jsNotASpec = 'not an object' as unknown as Axe.Spec; + expect(() => axePup.configure(jsNotASpec)).to.throw('needs an object'); + }); + }); + + describe('options', () => { + describe('.options()', () => { + it('passes options to axe-core', async () => { + await page.goto(`${addr}/external/index.html`); + + const results = await new AxePuppeteer(page) + // Disable the `region` rule + .options({ rules: { region: { enabled: false } } }) + .analyze(); + + const flatResults = [ + ...results.passes, + ...results.incomplete, + ...results.inapplicable, + ...results.violations + ]; + + expect(flatResults.find((r: Axe.Result) => r.id === 'region')).to.be + .undefined; + }); + }); + + describe('.withTags()', () => { + it('only rules with the given tag(s)', async () => { + await page.goto(`${addr}/external/index.html`); + + const results = await new AxePuppeteer(page) + .withTags(['best-practice']) + .analyze(); + + const flatResults = [ + ...results.passes, + ...results.incomplete, + ...results.inapplicable, + ...results.violations + ]; + + // Ensure all run rules had the 'best-practice' tag + for (const rule of flatResults) { + expect(rule.tags).to.include('best-practice'); + } + }); + }); + + describe('.withRules()', () => { + it('only rules with the given rule(s)', async () => { + await page.goto(`${addr}/external/index.html`); + + const results = await new AxePuppeteer(page) + // Only enable the `region` rule + .withRules(['region']) + .analyze(); + + const flatResults = [ + ...results.passes, + ...results.incomplete, + ...results.inapplicable, + ...results.violations + ]; + + expect(flatResults).to.have.lengthOf(1); + expect(flatResults[0]).to.have.property('id', 'region'); + }); + }); + + describe('.disableRules()', () => { + it('disables the given rule(s)', async function () { + await page.goto(`${addr}/external/index.html`); + + const results = await new AxePuppeteer(page) + // Disable the `region` rule + .disableRules(['region']) + .analyze(); + + const flatResults = [ + ...results.passes, + ...results.incomplete, + ...results.inapplicable, + ...results.violations + ]; + + expect(flatResults.find((r: Axe.Result) => r.id === 'region')).to.be + .undefined; + }); + }); + }); + + describe('frame tests', () => { + it('injects into nested iframes', async () => { + await page.goto(`${addr}/external/nested-iframes.html`); + + const { violations } = await new AxePuppeteer(page) + .options({ runOnly: 'label' }) + .analyze(); + + assert.equal(violations[0].id, 'label'); + const nodes = violations[0].nodes; + assert.lengthOf(nodes, 4); + assert.deepEqual(nodes[0].target, [ + '#ifr-foo', + '#foo-bar', + '#bar-baz', + 'input' + ]); + assert.deepEqual(nodes[1].target, ['#ifr-foo', '#foo-baz', 'input']); + assert.deepEqual(nodes[2].target, ['#ifr-bar', '#bar-baz', 'input']); + assert.deepEqual(nodes[3].target, ['#ifr-baz', 'input']); + }); + + it('tests framesets', async () => { + await page.goto(`${addr}/external/nested-frameset.html`); + const { violations } = await new AxePuppeteer(page) + .options({ runOnly: 'label' }) + .analyze(); + + assert.equal(violations[0].id, 'label'); + assert.lengthOf(violations[0].nodes, 4); + const nodes = violations[0].nodes; + assert.deepEqual(nodes[0].target, [ + '#frm-foo', + '#foo-bar', + '#bar-baz', + 'input' + ]); + assert.deepEqual(nodes[1].target, ['#frm-foo', '#foo-baz', 'input']); + assert.deepEqual(nodes[2].target, ['#frm-bar', '#bar-baz', 'input']); + assert.deepEqual(nodes[3].target, ['#frm-baz', 'input']); + }); + + it('tests frames in shadow DOM', async () => { + await page.goto(`${addr}/external/shadow-frames.html`); + const { violations } = await new AxePuppeteer(page) + .options({ runOnly: 'label' }) + .analyze(); + + assert.equal(violations[0].id, 'label'); + assert.lengthOf(violations[0].nodes, 3); + + const nodes = violations[0].nodes; + assert.deepEqual(nodes[0].target, ['#light-frame', 'input']); + assert.deepEqual(nodes[1].target, [ + ['#shadow-root', '#shadow-frame'], + 'input' + ]); + assert.deepEqual(nodes[2].target, ['#slotted-frame', 'input']); + }); + + it('reports erroring frames in frame-tested', async () => { + await page.goto(`${addr}/external/crash-parent.html`); + const results = await new AxePuppeteer(page, axeSource + axeCrasherSource) + .options({ runOnly: ['label', 'frame-tested'] }) + .analyze(); + + assert.equal(results.incomplete[0].id, 'frame-tested'); + assert.lengthOf(results.incomplete[0].nodes, 1); + assert.deepEqual(results.incomplete[0].nodes[0].target, ['#ifr-crash']); + assert.equal(results.violations[0].id, 'label'); + assert.lengthOf(results.violations[0].nodes, 2); + assert.deepEqual(results.violations[0].nodes[0].target, [ + '#ifr-bar', + '#bar-baz', + 'input' + ]); + assert.deepEqual(results.violations[0].nodes[1].target, [ + '#ifr-baz', + 'input' + ]); + }); + }); + + describe('without runPartial', () => { + let axe403Source: string; + before(() => { + const axePath = require.resolve('./fixtures/external/axe-core@legacy.js'); + axe403Source = fs.readFileSync(axePath, 'utf8'); + }); + + it('can run', async () => { + await page.goto(`${addr}/external/nested-iframes.html`); + const results = await new AxePuppeteer(page, axe403Source) + .withRules('label') + .analyze(); + + assert.equal(results.violations[0].id, 'label'); + assert.lengthOf(results.violations[0].nodes, 4); + assert.equal(results.testEngine.version, '4.0.3'); + }); + + it('throws if the top level errors', done => { + const source = axe403Source + axeCrasherSource; + page + .goto(`${addr}/external/crash.html`) + .then(() => { + return new AxePuppeteer(page, source).withRules('label').analyze(); + }) + .then( + out => { + console.log(out); + done(new Error('Expect async function to throw')); + }, + () => done() + ); + }); + + it('reports frame-tested', async () => { + await page.goto(`${addr}/external/crash-parent.html`); + const results = await new AxePuppeteer(page, axeSource + axeCrasherSource) + .withRules(['label', 'frame-tested']) + .analyze(); + + assert.equal(results.incomplete[0].id, 'frame-tested'); + assert.lengthOf(results.incomplete[0].nodes, 1); + assert.equal(results.violations[0].id, 'label'); + assert.lengthOf(results.violations[0].nodes, 2); + }); + }); +}); diff --git a/packages/puppeteer/test/fixtures/custom-rule-config.json b/packages/puppeteer/test/fixtures/custom-rule-config.json deleted file mode 100644 index bb28abeb..00000000 --- a/packages/puppeteer/test/fixtures/custom-rule-config.json +++ /dev/null @@ -1,35 +0,0 @@ -{ - "checks": [ - { - "id": "dylang", - "options": ["dylan"], - "evaluate": "function (node, options) {\n var lang = (node.getAttribute(\"lang\") || \"\").trim().toLowerCase();\n var xmlLang = (node.getAttribute(\"xml:lang\") || \"\").trim().toLowerCase();\n var invalid = [];\n (options || []).forEach(function(cc) {\n cc = cc.toLowerCase();\n if (lang && (lang === cc || lang.indexOf(cc.toLowerCase() + \"-\") === 0)) {\n lang = null;\n }\n if (xmlLang && (xmlLang === cc || xmlLang.indexOf(cc.toLowerCase() + \"-\") === 0)) {\n xmlLang = null;\n }\n });\n if (xmlLang) {\n invalid.push('xml:lang=\"' + xmlLang + '\"');\n }\n if (lang) {\n invalid.push('lang=\"' + lang + '\"');\n }\n if (invalid.length) {\n this.data(invalid);\n return true;\n }\n return false;\n }", - "messages": { - "pass": "Good language", - "fail": "You mst use the DYLAN language" - } - } - ], - "rules": [ - { - "id": "dylang", - "metadata": { - "description": "Ensures lang attributes have the value of 'dylan'", - "help": "lang attribute must have the value of 'dylan'" - }, - "selector": "html", - "any": [], - "all": [], - "none": ["dylang"], - "tags": ["wcag2aa"] - } - ], - "data": { - "rules": { - "dylang": { - "description": "Ensures lang attributes have the value of 'dylan'", - "help": "lang attribute must have the value of 'dylan'" - } - } - } -} diff --git a/packages/puppeteer/test/fixtures/doc-dylang.html b/packages/puppeteer/test/fixtures/doc-dylang.html deleted file mode 100644 index 68fdbed3..00000000 --- a/packages/puppeteer/test/fixtures/doc-dylang.html +++ /dev/null @@ -1,6 +0,0 @@ - - - - Test - - diff --git a/packages/puppeteer/test/fixtures/external b/packages/puppeteer/test/fixtures/external new file mode 120000 index 00000000..1a09b7a9 --- /dev/null +++ b/packages/puppeteer/test/fixtures/external @@ -0,0 +1 @@ +../../node_modules/axe-test-fixtures/fixtures/ \ No newline at end of file diff --git a/packages/puppeteer/test/fixtures/frames/bar.html b/packages/puppeteer/test/fixtures/frames/bar.html deleted file mode 100644 index b199bb80..00000000 --- a/packages/puppeteer/test/fixtures/frames/bar.html +++ /dev/null @@ -1,10 +0,0 @@ - - - - Bar - - -

Bar

- - - diff --git a/packages/puppeteer/test/fixtures/frames/baz.html b/packages/puppeteer/test/fixtures/frames/baz.html deleted file mode 100644 index 1742ccd7..00000000 --- a/packages/puppeteer/test/fixtures/frames/baz.html +++ /dev/null @@ -1,9 +0,0 @@ - - - - Baz - - -

Baz

- - diff --git a/packages/puppeteer/test/fixtures/frames/foo.html b/packages/puppeteer/test/fixtures/frames/foo.html deleted file mode 100644 index 0bb2811d..00000000 --- a/packages/puppeteer/test/fixtures/frames/foo.html +++ /dev/null @@ -1,11 +0,0 @@ - - - - Foo - - -

Foo

- - - - diff --git a/packages/puppeteer/test/fixtures/frames/recursive.html b/packages/puppeteer/test/fixtures/frames/recursive.html deleted file mode 100644 index 3a3ce063..00000000 --- a/packages/puppeteer/test/fixtures/frames/recursive.html +++ /dev/null @@ -1,10 +0,0 @@ - - - - Recursive - - -

Recursive

- - - diff --git a/packages/puppeteer/test/fixtures/index.html b/packages/puppeteer/test/fixtures/index.html deleted file mode 100644 index 62186562..00000000 --- a/packages/puppeteer/test/fixtures/index.html +++ /dev/null @@ -1,6 +0,0 @@ - - - - Test - - diff --git a/packages/puppeteer/test/fixtures/nested-frames.html b/packages/puppeteer/test/fixtures/nested-frames.html deleted file mode 100644 index 28d8470d..00000000 --- a/packages/puppeteer/test/fixtures/nested-frames.html +++ /dev/null @@ -1,11 +0,0 @@ - - - - Nested Frames - - -

This page has nested frames!

-


- - - diff --git a/packages/puppeteer/test/fixtures/recursive-frames.html b/packages/puppeteer/test/fixtures/recursive-frames.html deleted file mode 100644 index 6725009f..00000000 --- a/packages/puppeteer/test/fixtures/recursive-frames.html +++ /dev/null @@ -1,12 +0,0 @@ - - - - Recursive Frames - - -

This page has a weird recursive frams!

-


- - - - diff --git a/packages/puppeteer/test/integration/doc-dylang.test.ts b/packages/puppeteer/test/integration/doc-dylang.test.ts index dafa759d..df9a406c 100644 --- a/packages/puppeteer/test/integration/doc-dylang.test.ts +++ b/packages/puppeteer/test/integration/doc-dylang.test.ts @@ -1,82 +1,80 @@ // Adapter from axe-webdriverjs. // This test tests to make sure that a valid configuration works. - -import { expect } from 'chai'; -import Puppeteer from 'puppeteer'; -import * as path from 'path'; +import 'mocha'; +import { assert } from 'chai'; +import * as fs from 'fs'; +import Puppeteer, { Browser, Page } from 'puppeteer'; import AxePuppeteer from '../../src/index'; -import Axe from 'axe-core'; -import { customConfig, fixtureFilePath } from '../utils'; -import express from 'express'; -import { createServer } from 'http'; -import testListen from 'test-listen'; +import { puppeteerArgs, startServer } from '../utils'; +import { Server } from 'http'; + +const dylangConfig = JSON.parse( + fs.readFileSync( + require.resolve('../fixtures/external/dylang-config.json'), + 'utf8' + ) +); describe('doc-dylang.html', function () { - before(async function () { - this.timeout(10000); + let browser: Browser; + let page: Page; + let server: Server; + let addr: string; - const args = []; - if (process.env.CI) { - args.push('--no-sandbox', '--disable-setuid-sandbox'); - } - this.browser = await Puppeteer.launch({ args }); + this.timeout(10000); + + before(async () => { + const args = puppeteerArgs(); + browser = await Puppeteer.launch({ args }); + ({ server, addr } = await startServer()); }); + after(async function () { - await this.browser.close(); + await browser.close(); + server.close(); }); - before(async function () { - // const app: express.Application = express() - const app: express.Application = express(); - app.use(express.static(path.resolve(__dirname, '..', 'fixtures'))); - this.server = createServer(app); - this.addr = await testListen(this.server); - this.fixtureFileURL = (filename: string): string => { - return `${this.addr}/${filename}`; - }; - }); - after(function () { - this.server.close(); - }); beforeEach(async function () { - this.page = await this.browser.newPage(); + page = await browser.newPage(); }); + afterEach(async function () { - await this.page.close(); + await page.close(); }); it('should find violations with customized helpUrl', async function () { - const config = await customConfig(); - - await this.page.goto(this.fixtureFileURL('doc-dylang.html')); - - const results = await new AxePuppeteer(this.page) - .configure(config) - .withRules(['dylang']) + await page.goto(`${addr}/external/index.html`); + const { violations, passes } = await new AxePuppeteer(page) + .configure(dylangConfig) .analyze(); - expect(results.violations).to.have.lengthOf(1); - expect(results.violations[0].id).to.eql('dylang'); - expect( - results.violations[0].helpUrl.indexOf('application=axe-puppeteer') - ).to.not.eql(-1); - expect(results.passes).to.have.lengthOf(0); + assert.lengthOf(passes, 0); + assert.lengthOf(violations, 1); + assert.equal(violations[0].id, 'dylang'); + assert.lengthOf(violations[0].nodes, 1); }); + it('configures in nested frames', async function () { + await page.goto(`${addr}/external/nested-iframes.html`); + const { violations } = await new AxePuppeteer(page) + .configure(dylangConfig) + .analyze(); - it('configures in nested frames', async function() { - await this.page.goto(this.fixtureFileURL('nested-frames.html')) - - const results = await new AxePuppeteer(this.page) - .configure(await customConfig()) - .withRules(['dylang']) - .analyze() + assert.lengthOf(violations, 1); + assert.equal(violations[0].id, 'dylang'); + assert.lengthOf(violations[0].nodes, 8); + }); - expect(results.violations.find((r: Axe.Result) => r.id === 'dylang')) - .to.not.be.undefined - expect(results.violations.find((r: Axe.Result) => r.id === 'dylang')) - .to.have.property('nodes') - .and.to.have.lengthOf(4) - }) + it('works without runPartial', async () => { + const axePath = require.resolve('../fixtures/external/axe-core@legacy.js'); + const axe403Source = fs.readFileSync(axePath, 'utf8'); + await page.goto(`${addr}/external/nested-iframes.html`); + const { violations } = await new AxePuppeteer(page, axe403Source) + .configure(dylangConfig) + .analyze(); + assert.lengthOf(violations, 1); + assert.equal(violations[0].id, 'dylang'); + assert.lengthOf(violations[0].nodes, 8); + }); }); diff --git a/packages/puppeteer/test/load-page.test.ts b/packages/puppeteer/test/load-page.test.ts new file mode 100644 index 00000000..ad5dd9e4 --- /dev/null +++ b/packages/puppeteer/test/load-page.test.ts @@ -0,0 +1,64 @@ +import 'mocha'; +import { expect } from 'chai'; +import { Server } from 'http'; +import Puppeteer, { Browser } from 'puppeteer'; +import * as sinon from 'sinon'; +import { loadPage } from '../src/index'; +import { puppeteerArgs, startServer } from './utils'; + +type SinonSpy = sinon.SinonSpy; + +describe('loadPage', function () { + let browser: Browser; + let server: Server; + let addr: string; + + this.timeout(10000); + + const fixtureFileURL = (filename: string): string => { + return `${addr}/${filename}`; + }; + + before(async () => { + ({ server, addr } = await startServer()); + const args = puppeteerArgs(); + browser = await Puppeteer.launch({ args }); + }); + + after(async () => { + await browser.close(); + server.close(); + }); + + it('handles creating a page for you', async function () { + const url = fixtureFileURL('index.html'); + const results = await (await loadPage(browser, url)).analyze(); + expect(results).to.exist; + }); + + it('closes the page for you', async function () { + // Grab the original `newPage` method + const newPage = browser.newPage.bind(browser); + let pageCloseSpy: SinonSpy | undefined; + + // Stub `Browser::newPage` + const newPageStub: sinon.SinonStub = sinon.stub(browser, 'newPage'); + // Stub Calls the original, but adds a spy to the returned `Page`'s `close` method + newPageStub.callsFake(async () => { + const page = await newPage.bind(browser)(); + pageCloseSpy = sinon.spy(page, 'close'); + return page; + }); + + try { + const url = fixtureFileURL('index.html'); + const results = await (await loadPage(browser, url)).analyze(); + + expect(results).to.exist; + expect(pageCloseSpy).to.exist.and.have.property('called').that.is.true; + } finally { + // Make sure to restore `Browser::newPage` + newPageStub.restore(); + } + }); +}); diff --git a/packages/puppeteer/test/mocha.opts b/packages/puppeteer/test/mocha.opts index df7d8265..06c08856 100644 --- a/packages/puppeteer/test/mocha.opts +++ b/packages/puppeteer/test/mocha.opts @@ -2,5 +2,4 @@ --require source-map-support/register --recursive --full-trace ---bail test/**/*.test.ts diff --git a/packages/puppeteer/test/usage.test.ts b/packages/puppeteer/test/usage.test.ts deleted file mode 100644 index e98f4003..00000000 --- a/packages/puppeteer/test/usage.test.ts +++ /dev/null @@ -1,602 +0,0 @@ -import 'mocha'; -import Axe from 'axe-core'; -import { assert, expect } from 'chai'; -import express from 'express'; -import { createServer } from 'http'; -import * as path from 'path'; -import Puppeteer from 'puppeteer'; -import * as sinon from 'sinon'; -import testListen from 'test-listen'; -import AxePuppeteer, { loadPage } from '../src/index'; -import { customConfig } from './utils'; - -type SinonSpy = sinon.SinonSpy; -type Frame = Puppeteer.Frame; - -const ExpectAssertionVal = (false as true) && expect(null); -type ExpectAssertion = typeof ExpectAssertionVal; - -async function expectAsync(fn: () => Promise): Promise { - try { - const res = await fn(); - return expect(() => res); - } catch (err) { - return expect(() => { - throw err; - }); - } -} - -async function expectAsyncToNotThrow(fn: () => Promise): Promise { - const expectResult = await expectAsync(fn); - // tslint:disable-next-line:no-unused-expression-chai - expectResult.to.not.throw; -} - -describe('AxePuppeteer', function () { - before(async function (this) { - this.timeout(10000); - - const args = []; - if (process.env.CI) { - args.push('--no-sandbox', '--disable-setuid-sandbox'); - } - this.browser = await Puppeteer.launch({ args }); - }); - after(async function () { - await this.browser.close(); - }); - beforeEach(async function () { - this.page = await this.browser.newPage(); - }); - afterEach(async function () { - await this.page.close(); - }); - before(async function () { - // const app: express.Application = express() - const app: express.Application = express(); - app.use(express.static(path.resolve(__dirname, 'fixtures'))); - this.server = createServer(app); - this.addr = await testListen(this.server); - - this.fixtureFileURL = (filename: string): string => { - return `${this.addr}/${filename}`; - }; - }); - after(function () { - this.server.close(); - }); - - describe('convenience constructor', function () { - it('handles creating a page for you', async function () { - const url = this.fixtureFileURL('index.html'); - const results = await (await loadPage(this.browser, url)).analyze(); - - expect(results).to.exist; - }); - - it('closes the page for you', async function () { - // Grab the original `newPage` method - const newPage = this.browser.newPage.bind(this.browser); - let pageCloseSpy: SinonSpy | undefined; - - // Stub `Browser::newPage` - const newPageStub: sinon.SinonStub = sinon.stub(this.browser, 'newPage'); - // Stub Calls the original, but adds a spy to the returned `Page`'s `close` method - newPageStub.callsFake(async () => { - const page = await newPage.bind(this.browser)(); - pageCloseSpy = sinon.spy(page, 'close'); - return page; - }); - - try { - const url = this.fixtureFileURL('index.html'); - const results = await (await loadPage(this.browser, url)).analyze(); - - expect(results).to.exist; - expect(pageCloseSpy).to.exist.and.have.property('called').that.is.true; - } finally { - // Make sure to restore `Browser::newPage` - newPageStub.restore(); - } - }); - }); - - describe('constructor', function () { - it('accepts a Page', async function () { - await this.page.goto(this.fixtureFileURL('index.html')); - const axePup = new AxePuppeteer(this.page); - await expectAsyncToNotThrow(() => axePup.analyze()); - }); - - it('accepts a Frame', async function () { - await this.page.goto(this.fixtureFileURL('index.html')); - const axePup = new AxePuppeteer(this.page.mainFrame()); - await expectAsyncToNotThrow(() => axePup.analyze()); - }); - - it('accepts custom axe-core source', async function () { - const axeSource = ` - window.axe = { - run: () => new Promise(resolve => resolve({})), - configure: () => {} - } - `; - - await this.page.goto(this.fixtureFileURL('index.html')); - - const evalSpy: SinonSpy = sinon.spy(this.page.mainFrame(), 'evaluate'); - - await new AxePuppeteer(this.page, axeSource).analyze(); - - assert(evalSpy.calledWith(axeSource)); - }); - // TODO: Defaults to using the bundled axe-core source - }); - - it('injects into nexted frames', async function () { - await this.page.goto(this.fixtureFileURL('nested-frames.html')); - - const spies = this.page - .frames() - .map((frame: Frame) => sinon.spy(frame, 'addScriptTag')); - - await new AxePuppeteer(this.page).analyze(); - - const calledSpies = spies - .map((spy: SinonSpy) => spy.called) - .filter((called: boolean) => called); - expect(calledSpies).to.have.lengthOf(4); - }); - - it('injects into nexted frames... when given a Frame', async function () { - await this.page.goto(this.fixtureFileURL('nested-frames.html')); - - const spies = this.page - .frames() - .map((frame: Frame) => sinon.spy(frame, 'addScriptTag')); - - await new AxePuppeteer(this.page.mainFrame()).analyze(); - - const calledSpies = spies - .map((spy: SinonSpy) => spy.called) - .filter((called: boolean) => called); - expect(calledSpies).to.have.lengthOf(4); - }); - - it('runs in nested frames', async function() { - await this.page.goto(this.fixtureFileURL('nested-frames.html')) - - const results = await new AxePuppeteer(this.page) - .analyze() - - - expect(results.violations.find((r: Axe.Result) => r.id === 'label')) - .to.not.be.undefined - }) - - it('injects custom axe source into nested frames', async function () { - const axeSource = ` - window.axe = { - run: () => Promise.resolve({}), - configure: () => {} - } - `; - - await this.page.goto(this.fixtureFileURL('nested-frames.html')); - - const defaultInjectSpies = this.page - .frames() - .map((frame: Frame) => sinon.spy(frame, 'addScriptTag')); - const evalSpies = this.page - .frames() - .map((frame: Frame) => sinon.spy(frame, 'evaluate')); - - await new AxePuppeteer(this.page, axeSource).analyze(); - - const calledDefaultSpies = defaultInjectSpies - .map((spy: SinonSpy) => spy.called) - .filter((called: boolean) => called); - expect(calledDefaultSpies).to.have.lengthOf(0); - - const customInjectedSpies = evalSpies - .map((spy: SinonSpy) => spy.calledWith(axeSource)) - .filter((called: boolean) => called); - expect(customInjectedSpies).to.have.lengthOf(4); - }); - - // TODO: Disbale frames? - - it("returns results through analyze's promise", async function () { - await this.page.goto(this.fixtureFileURL('index.html')); - const results = await new AxePuppeteer(this.page).analyze(); - expect(results).to.exist; - expect(results).to.have.property('passes'); - expect(results).to.have.property('incomplete'); - expect(results).to.have.property('inapplicable'); - expect(results).to.have.property('violations'); - }); - - it('returns results through the callback if passed', async function () { - await this.page.goto(this.fixtureFileURL('index.html')); - await new AxePuppeteer(this.page).analyze((err, results) => { - expect(err).to.be.null; - - expect(results).to.exist; - expect(results).to.have.property('passes'); - expect(results).to.have.property('incomplete'); - expect(results).to.have.property('inapplicable'); - expect(results).to.have.property('violations'); - }); - }); - - it('lets axe-core errors bubble when using promise API', async function () { - const axeSource = ` - window.axe = { - run: () => Promise.reject(new Error('boom')), - configure: () => {} - } - `; - - await this.page.goto(this.fixtureFileURL('index.html')); - - const axePup = new AxePuppeteer(this.page, axeSource); - (await expectAsync(async () => axePup.analyze())).to.throw('boom'); - }); - - it('passes axe-core errors when using callback API', async function () { - const axeSource = ` - window.axe = { - run: () => Promise.reject(new Error('boom')), - configure: () => {} - } - `; - - await this.page.goto(this.fixtureFileURL('index.html')); - - await new AxePuppeteer(this.page, axeSource).analyze(err => { - expect(err) - .to.exist.and.be.instanceof(Error) - .and.have.property('message') - .that.includes('boom'); - }); - }); - - describe('context', function () { - describe('with include and exclude', function () { - it('passes both .include and .exclude', async function () { - const axeSource = ` - window.axe = { - configure () {}, - run (context, options, config) { - if (context === document) { - return Promise.reject(new Error('Invalid context')) - } - if (context.include[0] !== '.include') { - return Promise.reject(new Error('Invalid include context')) - } - - if (context.exclude[0] !== '.exclude') { - return Promise.reject(new Error('Invalid exclude context')) - } - - return Promise.resolve({}) - } - } - `; - - await this.page.goto(this.fixtureFileURL('context.html')); - - const axePip = new AxePuppeteer(this.page, axeSource) - .include('.include') - .exclude('.exclude'); - - await expectAsyncToNotThrow(() => axePip.analyze()); - }); - }); - - // See #58 - describe('excluded with an array of strings', () => { - it('properly sets context.exclude', async function () { - const expected = ['.foo', '.bar', '.baz', '.qux']; - - const axeSource = ` - window.axe = { - configure(){}, - run({ exclude }){ - return Promise.resolve({ exclude }) - } - } - `; - - await this.page.goto(this.fixtureFileURL('context.html')); - - const axePip = new AxePuppeteer(this.page, axeSource) - .include('.include') - .exclude(['.foo', '.bar', '.baz', '.qux']); - - const { exclude: actual } = (await axePip.analyze()) as any; - assert.deepEqual(actual[0], expected); - }); - }); - - describe('with only include', function () { - it('adds .include to context', async function () { - const axeSource = ` - window.axe = { - configure () {}, - run (context, options, config) { - if (context === document) { - return Promise.reject(new Error('Invalid context')) - } - if (context.include[0] !== '.include') { - return Promise.reject(new Error('Invalid include context')) - } - - if (context.exclude) { - return Promise.reject(new Error('Invalid exclude context')) - } - - return Promise.resolve({}) - } - } - `; - - await this.page.goto(this.fixtureFileURL('context.html')); - - const axePip = new AxePuppeteer(this.page, axeSource).include( - '.include' - ); - - await expectAsyncToNotThrow(() => axePip.analyze()); - }); - }); - - describe('with only exclude', function () { - it('adds .exclude to context', async function () { - const axeSource = ` - window.axe = { - configure () {}, - run (context, options, config) { - if (context === document) { - return Promise.reject(new Error('Invalid context')) - } - if (context.include) { - return Promise.reject(new Error('Invalid include context')) - } - - if (context.exclude[0] !== '.exclude') { - return Promise.reject(new Error('Invalid exclude context')) - } - - return Promise.resolve({}) - } - } - `; - - await this.page.goto(this.fixtureFileURL('context.html')); - - const axePip = new AxePuppeteer(this.page, axeSource).exclude( - '.exclude' - ); - - await expectAsyncToNotThrow(() => axePip.analyze()); - }); - }); - - it('defaults to document', async function () { - const axeSource = ` - window.axe = { - configure () {}, - run (context, options, config) { - if (context !== document) { - return Promise.reject(new Error('Invalid context')) - } - - return Promise.resolve({}) - } - } - `; - - await this.page.goto(this.fixtureFileURL('context.html')); - - const axePip = new AxePuppeteer(this.page, axeSource); - - await expectAsyncToNotThrow(() => axePip.analyze()); - }); - }); - - describe('configure', function () { - it('accepts custom configuration', async function () { - const config: Axe.Spec = { - checks: [ - { - evaluate: (): false => false, - id: 'foo' - } - ], - rules: [ - { - all: [], - any: ['foo'], - id: 'foo', - none: [], - selector: 'html', - tags: ['wcag2aa'] - } - ] - }; - - await this.page.goto(this.fixtureFileURL('index.html')); - - // HACK: work around axe-core (incorrectly) requiring this to be - // a function (see https://github.com/dequelabs/axe-core/issues/974). - (config.checks as any)[0].evaluate = 'function () { return false }'; - - const results = await new AxePuppeteer(this.page) - .configure(config) - .withRules(['foo']) - .analyze(); - - expect(results).to.have.property('passes').with.lengthOf(0); - expect(results).to.have.property('incomplete').with.lengthOf(0); - expect(results).to.have.property('inapplicable').with.lengthOf(0); - expect(results).to.have.property('violations').with.lengthOf(1); - expect(results.violations[0]).to.have.property('id', 'foo'); - }); - - it('gives a helpful error when not passed an object', function () { - const axePup = new AxePuppeteer(this.page); - - // Cast a string to a Spec to simulate incorrect usage with Javascript. - const jsNotASpec = ('not an object' as unknown) as Axe.Spec; - expect(() => axePup.configure(jsNotASpec)).to.throw('needs an object'); - }); - }); - - describe('options', function () { - it('passes options to axe-core', async function () { - await this.page.goto(this.fixtureFileURL('index.html')); - - const results = await new AxePuppeteer(this.page) - // Disable the `region` rule - .options({ rules: { region: { enabled: false } } }) - .analyze(); - - const flatResults = [ - ...results.passes, - ...results.incomplete, - ...results.inapplicable, - ...results.violations - ]; - - expect(flatResults.find((r: Axe.Result) => r.id === 'region')).to.be - .undefined; - }); - }); - - describe('withTags', function () { - it('only rules with the given tag(s)', async function () { - await this.page.goto(this.fixtureFileURL('index.html')); - - const results = await new AxePuppeteer(this.page) - .withTags(['best-practice']) - .analyze(); - - const flatResults = [ - ...results.passes, - ...results.incomplete, - ...results.inapplicable, - ...results.violations - ]; - - // Ensure all run rules had the 'best-practice' tag - for (const rule of flatResults) { - expect(rule.tags).to.include('best-practice'); - } - }); - }); - - describe('withRules', function () { - it('only rules with the given rule(s)', async function () { - await this.page.goto(this.fixtureFileURL('index.html')); - - const results = await new AxePuppeteer(this.page) - // Only enable the `region` rule - .withRules(['region']) - .analyze(); - - const flatResults = [ - ...results.passes, - ...results.incomplete, - ...results.inapplicable, - ...results.violations - ]; - - expect(flatResults).to.have.lengthOf(1); - expect(flatResults[0]).to.have.property('id', 'region'); - }); - }); - - describe('disableRules', function () { - it('disables the given rule(s)', async function () { - await this.page.goto(this.fixtureFileURL('index.html')); - - const results = await new AxePuppeteer(this.page) - // Disable the `region` rule - .disableRules(['region']) - .analyze(); - - const flatResults = [ - ...results.passes, - ...results.incomplete, - ...results.inapplicable, - ...results.violations - ]; - - expect(flatResults.find((r: Axe.Result) => r.id === 'region')).to.be - .undefined; - }); - }); - - describe('disableFrame', function() { - it('disables the given rule(s)', async function() { - await this.page.goto(this.fixtureFileURL('nested-frames.html')) - - const results = await new AxePuppeteer(this.page) - // Disable the `region` rule - .disableFrame("#topLevel") - .analyze() - - const flatResults = [ - ...results.passes, - ...results.incomplete, - ...results.inapplicable, - ...results.violations - ] - - - expect(results.violations.find((r: Axe.Result) => r.id === 'label')) - .to.be.undefined - }) - }) - - describe("when given a page that hasn't loaded", function () { - it('gives a helpful error', async function () { - let addr = ''; - - const server = createServer((req: any, res: any) => { - const html = ` - - - - - - `; - const js = 'document.write(2)'; - - if (req.url.indexOf('index') !== -1) { - res.writeHead(200, { 'Content-Type': 'text/html' }); - res.write(html); - res.end(); - } else { - setTimeout(() => { - res.writeHead(200, { - 'Content-Type': 'application/javascript' - }); - res.write(js); - res.end(); - }, 3000); - } - }); - addr = await testListen(server); - - const gotoP = this.page.goto(`${addr}/index.html`); - const axePup = new AxePuppeteer(this.page); - (await expectAsync(() => axePup.analyze())).to.throw('not ready'); - - gotoP.catch(() => ({})); - server.close(); - }); - }); -}); diff --git a/packages/puppeteer/test/utils.ts b/packages/puppeteer/test/utils.ts index e90115ec..cc57c4c4 100644 --- a/packages/puppeteer/test/utils.ts +++ b/packages/puppeteer/test/utils.ts @@ -1,18 +1,42 @@ -import { Spec } from 'axe-core'; -import * as fsOrig from 'fs'; import * as path from 'path'; -import { promisify } from 'util'; +import express from 'express'; +import { createServer, Server } from 'http'; +import testListen from 'test-listen'; +import { expect } from 'chai'; -const fs = { - readFile: promisify(fsOrig.readFile) -}; +export async function expectAsync( + fn: () => Promise +): Promise { + try { + const res = await fn(); + return expect(() => res); + } catch (err) { + return expect(() => { + throw err; + }); + } +} + +export async function expectAsyncToNotThrow( + fn: () => Promise +): Promise { + const expectResult = await expectAsync(fn); + expectResult.to.not.throw; +} + +export async function startServer(): Promise<{ server: Server; addr: string }> { + const app: express.Application = express(); + app.use(express.static(path.resolve(__dirname, 'fixtures'))); + const server: Server = createServer(app); + const addr = await testListen(server); -export function fixtureFilePath(filename: string): string { - return path.resolve(__dirname, 'fixtures', filename); + return { server, addr }; } -export async function customConfig(): Promise { - const configFile = fixtureFilePath('custom-rule-config.json'); - const config = JSON.parse(await fs.readFile(configFile, 'utf8')) as Spec; - return config; +export function puppeteerArgs(): string[] { + const args: string[] = []; + if (process.env.CI) { + args.push('--no-sandbox', '--disable-setuid-sandbox'); + } + return args; } diff --git a/packages/puppeteer/tsconfig.json b/packages/puppeteer/tsconfig.json index 6ae68f6a..cc7cbddc 100644 --- a/packages/puppeteer/tsconfig.json +++ b/packages/puppeteer/tsconfig.json @@ -5,7 +5,7 @@ "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */, "lib": [ "dom", - "es2018" + "es2020" ] /* Specify library files to be included in the compilation. */, "declaration": true /* Generates corresponding '.d.ts' file. */, "sourceMap": true /* Generates corresponding '.map' file. */, diff --git a/packages/webdriverjs/src/axe-injector.ts b/packages/webdriverjs/src/axe-injector.ts index d8819d02..ff7db5ce 100644 --- a/packages/webdriverjs/src/axe-injector.ts +++ b/packages/webdriverjs/src/axe-injector.ts @@ -1,11 +1,7 @@ import type { WebDriver, WebElement } from 'selenium-webdriver'; import { error } from 'selenium-webdriver'; import { source } from 'axe-core'; -import type { - AxeInjectorParams, - BuilderOptions, - InjectCallback -} from './types'; +import type { AxeInjectorParams, BuilderOptions } from './types'; const { StaleElementReferenceError } = error; export default class AxeInjectorLegacy {