Start providing tests

tsc/.mocharc.json

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+{
+	"spec": ["lib/test"],
+	"extension": ["js"],
+	"recursive": true,
+	"ui": "tdd"
+}

tsc/src/test/hosts.ts

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+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+
+import * as ts from 'typescript';
+
+export class InMemoryLanguageServiceHost implements ts.LanguageServiceHost {
+
+	private scriptSnapshots: Map<string, ts.IScriptSnapshot>;
+
+	constructor(private cwd: string, private scripts: Map<string, string>, private options: ts.CompilerOptions) {
+		this.scriptSnapshots = new Map();
+	}
+
+	public getScriptFileNames(): string[] {
+		return Array.from(this.scripts.keys());
+	}
+
+	public getCompilationSettings(): ts.CompilerOptions {
+		return this.options;
+	}
+
+	public getScriptVersion(fileName: string): string {
+		return '0';
+	}
+
+	public getProjectVersion(): string {
+		return '0';
+	}
+
+	public getScriptSnapshot(fileName: string): ts.IScriptSnapshot | undefined {
+		let result: ts.IScriptSnapshot | undefined = this.scriptSnapshots.get(fileName);
+		if (result === undefined) {
+			const content = this.scripts.get(fileName);
+			if (content === undefined) {
+				return undefined;
+			}
+			result = ts.ScriptSnapshot.fromString(content);
+			this.scriptSnapshots.set(fileName, result);
+		}
+		return result;
+	}
+
+	public getCurrentDirectory(): string {
+		return this.cwd;
+	}
+
+	public getDefaultLibFileName(options: ts.CompilerOptions): string {
+		return ts.getDefaultLibFilePath(options);
+	}
+}

tsc/src/test/simpleTests.ts

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+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+
+import * as ts from 'typescript';
+
+import { InMemoryLanguageServiceHost } from './hosts';
+import { Builder } from '../graph';
+
+import { lsif } from '../lsif';
+
+suite('Simple Tests', () => {
+	test('xxx', () => {
+		const host = new InMemoryLanguageServiceHost('/test', new Map([
+			['/test/a.ts', 'export const x = 10;']
+		]), { });
+		const languageService = ts.createLanguageService(host);
+		let counter = 1;
+		const generator = (): number => {
+			return counter++;
+		};
+		const builder = new Builder({ idGenerator: generator, emitSource: false });
+	});
+});