[MM-T2637] add e2e test for minimize/maximize app when double click header (#1983)

e2e/specs/server_management/header.test.js

@@ -0,0 +1,47 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+'use strict';
+
+const fs = require('fs');
+
+const env = require('../../modules/environment');
+const {asyncSleep} = require('../../modules/utils');
+
+describe('header', function desc() {
+    this.timeout(30000);
+
+    beforeEach(async () => {
+        env.createTestUserDataDir();
+        env.cleanTestConfig();
+    });
+
+    afterEach(async () => {
+        if (this.app) {
+            try {
+                await this.app.close();
+            // eslint-disable-next-line no-empty
+            } catch (err) {}
+        }
+    });
+
+    it('MM-T2637 Double-Clicking on the header should minimize/maximize the app', async () => {
+        const initialBounds = {x: 0, y: 0, width: 800, height: 400, maximized: false};
+        fs.writeFileSync(env.boundsInfoPath, JSON.stringify(initialBounds));
+        this.app = await env.getApp();
+        const mainWindow = await this.app.firstWindow();
+        const browserWindow = await this.app.browserWindow(mainWindow);
+        const header = await mainWindow.locator('div.topBar');
+        const headerBounds = await header.boundingBox();
+        await header.dblclick({position: {x: headerBounds.width / 2, y: headerBounds.y / 2}});
+        await asyncSleep(1000);
+        const isMaximized = await browserWindow.evaluate((window) => window.isMaximized());
+        isMaximized.should.be.equal(true);
+        const maximizedHeaderBounds = await header.boundingBox();
+        await header.dblclick({position: {x: maximizedHeaderBounds.width / 2, y: maximizedHeaderBounds.y / 2}});
+        await asyncSleep(1000);
+        const revertedBounds = await browserWindow.evaluate((window) => window.getContentBounds());
+        revertedBounds.height.should.be.equal(initialBounds.height);
+        revertedBounds.width.should.be.equal(initialBounds.width);
+    });
+});