Introduce FitAddon tests

addons/xterm-addon-fit/src/FitAddon.api.ts

@@ -0,0 +1,116 @@
+/**
+ * Copyright (c) 2019 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import * as puppeteer from 'puppeteer';
+import { assert } from 'chai';
+import { ITerminalOptions } from 'xterm';
+
+const APP = 'http://127.0.0.1:3000/test';
+
+let browser: puppeteer.Browser;
+let page: puppeteer.Page;
+const width = 1024;
+const height = 768;
+
+describe('FitAddon', () => {
+  before(async function(): Promise<any> {
+    this.timeout(20000);
+    browser = await puppeteer.launch({
+      headless: process.argv.indexOf('--headless') !== -1,
+      slowMo: 80,
+      args: [`--window-size=${width},${height}`, `--no-sandbox`]
+    });
+    page = (await browser.pages())[0];
+    await page.setViewport({ width, height });
+  });
+
+  after(async () => {
+    await browser.close();
+  });
+
+  beforeEach(async function(): Promise<any> {
+    this.timeout(20000);
+    await page.goto(APP);
+  });
+
+  describe('proposeDimensions', () => {
+    it('no terminal', async function(): Promise<any> {
+      await page.evaluate(`window.fit = new FitAddon();`);
+      assert.equal(await page.evaluate(`window.fit.proposeDimensions()`), undefined);
+    });
+
+    it('default', async function(): Promise<any> {
+      await openTerminal();
+      await loadFit();
+      assert.deepEqual(await page.evaluate(`window.fit.proposeDimensions()`), {
+        cols: 87,
+        rows: 26
+      });
+    });
+
+    it('width', async function(): Promise<any> {
+      await openTerminal();
+      await loadFit(1008);
+      assert.deepEqual(await page.evaluate(`window.fit.proposeDimensions()`), {
+        cols: 110,
+        rows: 26
+      });
+    });
+
+    it('small', async function(): Promise<any> {
+      await openTerminal();
+      await loadFit(1, 1);
+      assert.deepEqual(await page.evaluate(`window.fit.proposeDimensions()`), {
+        cols: 2,
+        rows: 1
+      });
+    });
+  });
+
+  describe('fit', () => {
+    it('default', async function(): Promise<any> {
+      await openTerminal();
+      await loadFit();
+      await page.evaluate(`window.fit.fit()`);
+      assert.equal(await page.evaluate(`window.term.cols`), 87);
+      assert.equal(await page.evaluate(`window.term.rows`), 26);
+    });
+
+    it('width', async function(): Promise<any> {
+      await openTerminal();
+      await loadFit(1008);
+      await page.evaluate(`window.fit.fit()`);
+      assert.equal(await page.evaluate(`window.term.cols`), 110);
+      assert.equal(await page.evaluate(`window.term.rows`), 26);
+    });
+
+    it('small', async function(): Promise<any> {
+      await openTerminal();
+      await loadFit(1, 1);
+      await page.evaluate(`window.fit.fit()`);
+      assert.equal(await page.evaluate(`window.term.cols`), 2);
+      assert.equal(await page.evaluate(`window.term.rows`), 1);
+    });
+  });
+});
+
+async function loadFit(width: number = 800, height: number = 450): Promise<void> {
+  await page.evaluate(`
+    window.fit = new FitAddon();
+    window.term.loadAddon(window.fit);
+    document.querySelector('#terminal-container').style.width='${width}px';
+    document.querySelector('#terminal-container').style.height='${height}px';
+  `);
+}
+
+async function openTerminal(options: ITerminalOptions = {}): Promise<void> {
+  await page.evaluate(`window.term = new Terminal(${JSON.stringify(options)})`);
+  await page.evaluate(`window.term.open(document.querySelector('#terminal-container'))`);
+  if (options.rendererType === 'dom') {
+    await page.waitForSelector('.xterm-rows');
+  } else {
+    await page.waitForSelector('.xterm-text-layer');
+  }
+}