angular-cn/packages/compiler-cli/test/test_support.ts

192 lines
6.4 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';
import * as ts from 'typescript';
import * as ng from '../index';
// TEST_TMPDIR is set by bazel.
const tmpdir = process.env.TEST_TMPDIR || os.tmpdir();
function getNgRootDir() {
const moduleFilename = module.filename.replace(/\\/g, '/');
const distIndex = moduleFilename.indexOf('/dist/all');
return moduleFilename.substr(0, distIndex);
}
export function writeTempFile(name: string, contents: string): string {
const id = (Math.random() * 1000000).toFixed(0);
const fn = path.join(tmpdir, `tmp.${id}.${name}`);
fs.writeFileSync(fn, contents);
return fn;
}
export function makeTempDir(): string {
let dir: string;
while (true) {
const id = (Math.random() * 1000000).toFixed(0);
dir = path.join(tmpdir, `tmp.${id}`);
if (!fs.existsSync(dir)) break;
}
fs.mkdirSync(dir);
return dir;
}
export interface TestSupport {
basePath: string;
write(fileName: string, content: string): void;
writeFiles(...mockDirs: {[fileName: string]: string}[]): void;
createCompilerOptions(overrideOptions?: ng.CompilerOptions): ng.CompilerOptions;
shouldExist(fileName: string): void;
shouldNotExist(fileName: string): void;
}
function createTestSupportFor(basePath: string) {
// Typescript uses identity comparison on `paths` and other arrays in order to determine
// if program structure can be reused for incremental compilation, so we reuse the default
// values unless overriden, and freeze them so that they can't be accidentaly changed somewhere
// in tests.
const defaultCompilerOptions = {
basePath,
'experimentalDecorators': true,
'skipLibCheck': true,
'strict': true,
'strictPropertyInitialization': false,
'types': Object.freeze<string>([]) as string[],
'outDir': path.resolve(basePath, 'built'),
'rootDir': basePath,
'baseUrl': basePath,
'declaration': true,
'target': ts.ScriptTarget.ES5,
'module': ts.ModuleKind.ES2015,
'moduleResolution': ts.ModuleResolutionKind.NodeJs,
'lib': Object.freeze([
path.resolve(basePath, 'node_modules/typescript/lib/lib.es6.d.ts'),
]) as string[],
// clang-format off
'paths': Object.freeze({'@angular/*': ['./node_modules/@angular/*']}) as {[index: string]: string[]}
// clang-format on
};
return {basePath, write, writeFiles, createCompilerOptions, shouldExist, shouldNotExist};
function write(fileName: string, content: string) {
const dir = path.dirname(fileName);
if (dir != '.') {
const newDir = path.resolve(basePath, dir);
if (!fs.existsSync(newDir)) fs.mkdirSync(newDir);
}
fs.writeFileSync(path.resolve(basePath, fileName), content, {encoding: 'utf-8'});
}
function writeFiles(...mockDirs: {[fileName: string]: string}[]) {
mockDirs.forEach(
(dir) => { Object.keys(dir).forEach((fileName) => { write(fileName, dir[fileName]); }); });
}
function createCompilerOptions(overrideOptions: ng.CompilerOptions = {}): ng.CompilerOptions {
return {...defaultCompilerOptions, ...overrideOptions};
}
function shouldExist(fileName: string) {
if (!fs.existsSync(path.resolve(basePath, fileName))) {
throw new Error(`Expected ${fileName} to be emitted (basePath: ${basePath})`);
}
}
function shouldNotExist(fileName: string) {
if (fs.existsSync(path.resolve(basePath, fileName))) {
throw new Error(`Did not expect ${fileName} to be emitted (basePath: ${basePath})`);
}
}
}
export function setupBazelTo(basePath: string) {
if (!process.env.TEST_SRCDIR) {
throw new Error('`setupBazelTo()` must only be called from in a Bazel job.');
}
const sources = process.env.TEST_SRCDIR;
const packages = path.join(sources, 'angular/packages');
const nodeModulesPath = path.join(basePath, 'node_modules');
const angularDirectory = path.join(nodeModulesPath, '@angular');
fs.mkdirSync(nodeModulesPath);
// Link the built angular packages
fs.mkdirSync(angularDirectory);
const packageNames = fs.readdirSync(packages).filter(
name => fs.statSync(path.join(packages, name)).isDirectory() &&
fs.existsSync(path.join(packages, name, 'npm_package')));
for (const pkg of packageNames) {
fs.symlinkSync(path.join(packages, `${pkg}/npm_package`), path.join(angularDirectory, pkg));
}
// Link rxjs
const rxjsSource = path.join(sources, 'rxjs');
const rxjsDest = path.join(nodeModulesPath, 'rxjs');
if (fs.existsSync(rxjsSource)) {
fs.symlinkSync(rxjsSource, rxjsDest);
}
// Link typescript
const typescriptSource =
path.join(sources, 'angular/external/angular_deps/node_modules/typescript');
const typescriptDest = path.join(nodeModulesPath, 'typescript');
if (fs.existsSync(typescriptSource)) {
fs.symlinkSync(typescriptSource, typescriptDest);
}
}
function setupBazel(): TestSupport {
const basePath = makeTempDir();
setupBazelTo(basePath);
return createTestSupportFor(basePath);
}
function setupTestSh(): TestSupport {
const basePath = makeTempDir();
const ngRootDir = getNgRootDir();
const nodeModulesPath = path.resolve(basePath, 'node_modules');
fs.mkdirSync(nodeModulesPath);
fs.symlinkSync(
path.resolve(ngRootDir, 'dist', 'all', '@angular'),
path.resolve(nodeModulesPath, '@angular'));
fs.symlinkSync(
path.resolve(ngRootDir, 'node_modules', 'rxjs'), path.resolve(nodeModulesPath, 'rxjs'));
fs.symlinkSync(
path.resolve(ngRootDir, 'node_modules', 'typescript'),
path.resolve(nodeModulesPath, 'typescript'));
return createTestSupportFor(basePath);
}
export function isInBazel() {
return process.env.TEST_SRCDIR != null;
}
export function setup(): TestSupport {
return isInBazel() ? setupBazel() : setupTestSh();
}
export function expectNoDiagnostics(options: ng.CompilerOptions, diags: ng.Diagnostics) {
const errorDiags = diags.filter(d => d.category !== ts.DiagnosticCategory.Message);
if (errorDiags.length) {
throw new Error(`Expected no diagnostics: ${ng.formatDiagnostics(errorDiags)}`);
}
}
export function expectNoDiagnosticsInProgram(options: ng.CompilerOptions, p: ng.Program) {
expectNoDiagnostics(options, [
...p.getNgStructuralDiagnostics(), ...p.getTsSemanticDiagnostics(),
...p.getNgSemanticDiagnostics()
]);
}