angular-cn/tools/symbol-extractor/symbol_extractor_spec.ts

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/**
* @license
* Copyright Google LLC 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 path from 'path';
import {SymbolExtractor} from './symbol_extractor';
describe('scenarios', () => {
const symbolExtractorSpecDir = path.dirname(
require.resolve('angular/tools/symbol-extractor/symbol_extractor_spec/empty.json'));
const scenarioFiles = fs.readdirSync(symbolExtractorSpecDir);
for (let i = 0; i < scenarioFiles.length; i++) {
const filePath = scenarioFiles[i];
// We only consider files as tests if they have a `.js` extension, but do
// not resolve to a tsickle externs file (which is a leftover from TS targets).
if (!filePath.endsWith('.js') || filePath.endsWith('.externs.js')) {
continue;
}
const testName = filePath.substring(0, filePath.lastIndexOf('.'));
const goldenFilePath = path.join(symbolExtractorSpecDir, `${testName}.json`);
if (!fs.existsSync(goldenFilePath)) {
throw new Error(`No golden file found for test: ${filePath}`);
}
// Left here so that it is easy to debug single test.
// if (testName !== 'hello_world_min_debug') continue;
it(testName, () => {
const jsFileContent = fs.readFileSync(path.join(symbolExtractorSpecDir, filePath)).toString();
const jsonFileContent = fs.readFileSync(goldenFilePath).toString();
const symbols = SymbolExtractor.parse(testName, jsFileContent);
const diff = SymbolExtractor.diff(symbols, jsonFileContent);
expect(diff).toEqual({});
});
}
// Tests not existing in source root. We cannot glob for generated test fixtures as
// tests do not run in a sandbox on Windows.
it('should properly capture classes in TypeScript ES2015 class output', () => {
const jsFileContent = fs.readFileSync(
require.resolve(
'angular/tools/symbol-extractor/symbol_extractor_spec/es2015_class_output.mjs'),
'utf8');
const jsonFileContent =
fs.readFileSync(path.join(symbolExtractorSpecDir, 'es2015_class_output.json')).toString();
const symbols = SymbolExtractor.parse('es2015_class_output', jsFileContent);
const diff = SymbolExtractor.diff(symbols, jsonFileContent);
expect(diff).toEqual({});
});
});