Merge from vscode 718331d6f3ebd1b571530ab499edb266ddd493d5

src/vs/workbench/test/browser/api/mainThreadDocumentContentProviders.test.ts

@@ -0,0 +1,55 @@
+/*---------------------------------------------------------------------------------------------
+ *  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 { URI } from 'vs/base/common/uri';
+import { MainThreadDocumentContentProviders } from 'vs/workbench/api/browser/mainThreadDocumentContentProviders';
+import { TextModel } from 'vs/editor/common/model/textModel';
+import { mock } from 'vs/workbench/test/browser/api/mock';
+import { IModelService } from 'vs/editor/common/services/modelService';
+import { IEditorWorkerService } from 'vs/editor/common/services/editorWorkerService';
+import { TestRPCProtocol } from 'vs/workbench/test/browser/api/testRPCProtocol';
+import { TextEdit } from 'vs/editor/common/modes';
+
+suite('MainThreadDocumentContentProviders', function () {
+
+	test('events are processed properly', function () {
+
+		let uri = URI.parse('test:uri');
+		let model = TextModel.createFromString('1', undefined, undefined, uri);
+
+		let providers = new MainThreadDocumentContentProviders(new TestRPCProtocol(), null!, null!,
+			new class extends mock<IModelService>() {
+				getModel(_uri: URI) {
+					assert.equal(uri.toString(), _uri.toString());
+					return model;
+				}
+			},
+			new class extends mock<IEditorWorkerService>() {
+				computeMoreMinimalEdits(_uri: URI, data: TextEdit[] | undefined) {
+					assert.equal(model.getValue(), '1');
+					return Promise.resolve(data);
+				}
+			},
+		);
+
+		return new Promise((resolve, reject) => {
+			let expectedEvents = 1;
+			model.onDidChangeContent(e => {
+				expectedEvents -= 1;
+				try {
+					assert.ok(expectedEvents >= 0);
+				} catch (err) {
+					reject(err);
+				}
+				if (model.getValue() === '1\n2\n3') {
+					resolve();
+				}
+			});
+			providers.$onVirtualDocumentChange(uri, '1\n2');
+			providers.$onVirtualDocumentChange(uri, '1\n2\n3');
+		});
+	});
+});