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feat(clip): add clippath #58

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merged 2 commits into from
Nov 22, 2019
Merged

feat(clip): add clippath #58

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c97096c
feat(clip): add clippath
jtenner Nov 21, 2019
9d92c1e
feat(awesome): awesome jest fixes #57
jtenner Nov 21, 2019
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6 changes: 2 additions & 4 deletions README.md
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Expand Up @@ -6,7 +6,7 @@
[![Coverage Status](https://coveralls.io/repos/github/hustcc/jest-canvas-mock/badge.svg?branch=master)](https://coveralls.io/github/hustcc/jest-canvas-mock)
[![npm](https://img.shields.io/npm/v/jest-canvas-mock.svg)](https://www.npmjs.com/package/jest-canvas-mock)
[![npm](https://img.shields.io/npm/dm/jest-canvas-mock.svg)](https://www.npmjs.com/package/jest-canvas-mock)

[![Mentioned in Awesome Jest](https://awesome.re/mentioned-badge.svg)](https://github.com/jest-community/awesome-jest)

## Install

Expand All @@ -16,7 +16,6 @@ This should only be installed as a development dependency (`devDependencies`) as
npm i --save-dev jest-canvas-mock
```


## Setup

In your `package.json` under the `jest`, create a `setupFiles` array and add `jest-canvas-mock` to the array.
Expand All @@ -41,7 +40,6 @@ If you already have a `setupFiles` attribute you can also append `jest-canvas-mo

More about in [configuration section](https://facebook.github.io/jest/docs/en/configuration.html#content).


## Setup file

Alternatively you can create a new setup file which then requires this module or
Expand Down Expand Up @@ -98,7 +96,7 @@ expect(() => ctx.fill(new Path2D(), "invalid!")).toThrow(TypeError);

We try to follow the ECMAScript specification as closely as possible.

# Snapshots
## Snapshots

There are multiple ways to validate canvas state. There are currently three `static` methods attached
to the `CanvasRenderingContext2D` class. The first way to use this feature is by using the `__getEvents`
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55 changes: 55 additions & 0 deletions __tests__/classes/CanvasRenderingContext2D.__getClippingPath.js
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@@ -0,0 +1,55 @@
let ctx;
beforeEach(() => {
// get a new context each test
ctx = document.createElement('canvas')
.getContext('2d');
});

afterEach(() => {
const drawCalls = ctx.__getClippingRegion();
expect(drawCalls).toMatchSnapshot();
});

describe('__getClippingRegion', () => {
it("should be empty when there are no path elements", () => {
ctx.clip();
});

it("should store the clipping region", () => {
ctx.rect(1, 2, 3, 4);
ctx.arc(1, 2, 3, 4, 5);
ctx.clip();
});

it("shouldn't store the whole clipping region twice when clip is called twice", () => {
ctx.rect(1, 2, 3, 4);
ctx.arc(1, 2, 3, 4, 5);
ctx.clip();
ctx.rect(1, 2, 3, 4);
ctx.arc(1, 2, 3, 4, 5);
ctx.clip();
});

it("should save the clipping region correctly when saved", () => {
ctx.rect(1, 2, 3, 4);
ctx.arc(1, 2, 3, 4, 5);
ctx.clip();
const region = ctx.__getClippingRegion();
ctx.save();
expect(region).toStrictEqual(ctx.__getClippingRegion());
});

it("should save the clipping region correctly when saved", () => {
ctx.rect(1, 2, 3, 4);
ctx.arc(1, 2, 3, 4, 5);
ctx.clip();
const region = ctx.__getClippingRegion();
ctx.save();
ctx.rect(1, 2, 3, 4);
ctx.arc(1, 2, 3, 4, 5);
ctx.clip();
expect(region).not.toStrictEqual(ctx.__getClippingRegion());
ctx.restore();
expect(region).toStrictEqual(ctx.__getClippingRegion());
});
});
267 changes: 267 additions & 0 deletions __tests__/classes/__snapshots__/CanvasRenderingContext2D.__getClippingPath.js.snap
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// Jest Snapshot v1, https://goo.gl/fbAQLP

exports[`__getClippingRegion should be empty when there are no path elements 1`] = `Array []`;

exports[`__getClippingRegion should save the clipping region correctly when saved 1`] = `
Array [
Object {
"props": Object {
"height": 4,
"width": 3,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "rect",
},
Object {
"props": Object {
"anticlockwise": false,
"endAngle": 5,
"radius": 3,
"startAngle": 4,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "arc",
},
]
`;

exports[`__getClippingRegion should save the clipping region correctly when saved 2`] = `
Array [
Object {
"props": Object {
"height": 4,
"width": 3,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "rect",
},
Object {
"props": Object {
"anticlockwise": false,
"endAngle": 5,
"radius": 3,
"startAngle": 4,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "arc",
},
]
`;

exports[`__getClippingRegion should store the clipping region 1`] = `
Array [
Object {
"props": Object {
"height": 4,
"width": 3,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "rect",
},
Object {
"props": Object {
"anticlockwise": false,
"endAngle": 5,
"radius": 3,
"startAngle": 4,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "arc",
},
]
`;

exports[`__getClippingRegion shouldn't store the whole clipping region twice when clip is called twice 1`] = `
Array [
Object {
"props": Object {
"height": 4,
"width": 3,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "rect",
},
Object {
"props": Object {
"anticlockwise": false,
"endAngle": 5,
"radius": 3,
"startAngle": 4,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "arc",
},
Object {
"props": Object {
"fillRule": "nonzero",
"path": Array [
Object {
"props": Object {},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "beginPath",
},
Object {
"props": Object {
"height": 4,
"width": 3,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "rect",
},
Object {
"props": Object {
"anticlockwise": false,
"endAngle": 5,
"radius": 3,
"startAngle": 4,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "arc",
},
],
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "clip",
},
Object {
"props": Object {
"height": 4,
"width": 3,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "rect",
},
Object {
"props": Object {
"anticlockwise": false,
"endAngle": 5,
"radius": 3,
"startAngle": 4,
"x": 1,
"y": 2,
},
"transform": Array [
1,
0,
0,
1,
0,
0,
],
"type": "arc",
},
]
`;
12 changes: 6 additions & 6 deletions package.json
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Expand Up @@ -15,16 +15,16 @@
"parse-color": "^1.0.0"
},
"devDependencies": {
"@babel/cli": "^7.6.4",
"@babel/core": "^7.6.4",
"@babel/plugin-proposal-class-properties": "^7.5.5",
"@babel/preset-env": "^7.6.3",
"@babel/cli": "^7.7.0",
"@babel/core": "^7.7.2",
"@babel/plugin-proposal-class-properties": "^7.7.0",
"@babel/preset-env": "^7.7.1",
"@commitlint/cli": "^8.2.0",
"@commitlint/config-angular": "^8.2.0",
"babel-jest": "^24.9.0",
"babel-plugin-version": "^0.2.3",
"coveralls": "^3.0.7",
"husky": "^3.0.9",
"coveralls": "^3.0.8",
"husky": "^3.1.0",
"jest": "^24.9.0"
},
"commitlint": {
Expand Down
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