Refresh master with initial release/0.24 snapshot (#332)

* Initial port of release/0.24 source code

* Fix additional headers

* Fix a typo in launch.json

test/smoke/src/areas/css/css.test.ts

@@ -0,0 +1,56 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as assert from 'assert';
+import { SpectronApplication } from '../../spectron/application';
+import { ProblemSeverity, Problems } from '../problems/problems';
+
+describe('CSS', () => {
+	before(function () {
+		this.app.suiteName = 'CSS';
+	});
+
+	it('verifies quick outline', async function () {
+		const app = this.app as SpectronApplication;
+		await app.workbench.quickopen.openFile('style.css');
+
+		await app.workbench.editor.openOutline();
+		await app.workbench.quickopen.waitForQuickOpenElements(names => names.length === 2);
+	});
+
+	it('verifies warnings for the empty rule', async function () {
+		const app = this.app as SpectronApplication;
+		await app.workbench.quickopen.openFile('style.css');
+		await app.workbench.editor.waitForTypeInEditor('style.css', '.foo{}');
+
+		let warning = await app.client.waitForElement(Problems.getSelectorInEditor(ProblemSeverity.WARNING));
+		await app.screenCapturer.capture('CSS Warning in editor');
+		assert.ok(warning, `Warning squiggle is not shown in 'style.css'.`);
+
+		await app.workbench.problems.showProblemsView();
+		warning = await app.client.waitForElement(Problems.getSelectorInProblemsView(ProblemSeverity.WARNING));
+		await app.screenCapturer.capture('CSS Warning in problems view');
+		assert.ok(warning, 'Warning does not appear in Problems view.');
+		await app.workbench.problems.hideProblemsView();
+	});
+
+	it('verifies that warning becomes an error once setting changed', async function () {
+		const app = this.app as SpectronApplication;
+		await app.workbench.settingsEditor.addUserSetting('css.lint.emptyRules', '"error"');
+		await app.workbench.quickopen.openFile('style.css');
+		await app.workbench.editor.waitForTypeInEditor('style.css', '.foo{}');
+
+		let error = await app.client.waitForElement(Problems.getSelectorInEditor(ProblemSeverity.ERROR));
+		await app.screenCapturer.capture('CSS Error in editor');
+		assert.ok(error, `Warning squiggle is not shown in 'style.css'.`);
+
+		const problems = new Problems(app);
+		await problems.showProblemsView();
+		error = await app.client.waitForElement(Problems.getSelectorInProblemsView(ProblemSeverity.ERROR));
+		await app.screenCapturer.capture('CSS Error in probles view');
+		assert.ok(error, 'Warning does not appear in Problems view.');
+		await problems.hideProblemsView();
+	});
+});