70 lines
2.0 KiB
TypeScript
70 lines
2.0 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {createPatch} from 'diff';
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import * as fs from 'fs';
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import * as path from 'path';
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const TEST_DIR = path.resolve(path.join('packages', 'bazel', 'test', 'ng_package'));
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function listDirectories(p: string, depth = 0) {
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const result: string[] = [];
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if (fs.statSync(p).isDirectory()) {
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fs.readdirSync(p).forEach(f => {
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result.push(
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' '.repeat(depth) + path.join(p, f), ...listDirectories(path.join(p, f), depth + 1));
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});
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}
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return result;
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}
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function catFiles(p: string) {
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const result: string[] = [];
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if (fs.statSync(p).isDirectory()) {
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fs.readdirSync(p).forEach(dir => { result.push(...catFiles(path.join(p, dir))); });
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} else {
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result.push(`--- ${p} ---`, '', fs.readFileSync(p, 'utf-8'), '');
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}
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return result;
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}
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const goldenFile = path.join(TEST_DIR, 'example_package.golden');
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process.chdir(path.join(TEST_DIR, 'example/npm_package'));
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const actual = [...listDirectories('.'), ...catFiles('.')].join('\n').replace(
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/bazel-out\/.*\/bin/g, 'bazel-bin');
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const expected = fs.readFileSync(goldenFile, 'utf-8');
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if (require.main === module) {
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const args = process.argv.slice(2);
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if (args[0] === '--accept') {
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fs.writeFileSync(require.resolve(goldenFile), actual, 'utf-8');
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}
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} else {
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describe('example ng_package', () => {
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it('should match golden file', () => {
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if (actual === expected) {
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return;
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}
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// Compute the patch and strip the header
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let patch =
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createPatch(goldenFile, expected, actual, 'Golden file', 'Generated file', {context: 5});
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const endOfHeader = patch.indexOf('\n', patch.indexOf('\n') + 1) + 1;
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patch = patch.substring(endOfHeader);
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fail(`example ng_package differs from golden file
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Diff:
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${patch}
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Accept the new golden file:
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bazel run ${process.env['BAZEL_TARGET']}.accept
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`);
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});
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});
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}
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