angular-cn/tools/ts-api-guardian/test/cli_e2e_test.ts

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/**
* @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 chai = require('chai');
import * as child_process from 'child_process';
import * as fs from 'fs';
import * as path from 'path';
import {assertFileEqual, unlinkRecursively} from './helpers';
const BINARY_PATH = require.resolve('../ts-api-guardian/bin/ts-api-guardian');
describe('cli: e2e test', () => {
const outDir = path.join(process.env['TEST_TMPDIR'], 'tmp');
beforeEach(() => {
if (!fs.existsSync(outDir)) {
fs.mkdirSync(outDir);
}
});
afterEach(() => { unlinkRecursively(outDir); });
it('should print usage without any argument', () => {
const {stderr} = execute([]);
chai.assert.match(stderr, /Usage/);
});
it('should show help message with --help', () => {
const {stdout} = execute(['--help']);
chai.assert.match(stdout, /Usage/);
});
it('should generate golden file with --out', () => {
const simpleFile = path.join(outDir, 'simple.d.ts');
const {status, stderr} = execute(['--out', simpleFile, 'test/fixtures/simple.d.ts']);
chai.assert.equal(status, 0, stderr);
assertFileEqual(simpleFile, 'test/fixtures/simple_expected.d.ts');
});
it('should verify golden file with --verify and exit cleanly on no difference', () => {
const {stdout, status} =
execute(['--verify', 'test/fixtures/simple_expected.d.ts', 'test/fixtures/simple.d.ts']);
chai.assert.equal(stdout, '');
chai.assert.equal(status, 0);
});
it('should verify golden file with --verify and exit with error on difference', () => {
const {stdout, status} = execute(
['--verify', 'test/fixtures/verify_expected.d.ts', 'test/fixtures/verify_entrypoint.d.ts']);
chai.assert.equal(stdout, fs.readFileSync('test/fixtures/verify.patch').toString());
chai.assert.equal(status, 1);
});
it('should generate multiple golden files with --outDir and --rootDir', () => {
const {status} = execute([
'--outDir', outDir, '--rootDir', 'test/fixtures', 'test/fixtures/simple.d.ts',
'test/fixtures/sorting.d.ts'
]);
chai.assert.equal(status, 0);
assertFileEqual(path.join(outDir, 'simple.d.ts'), 'test/fixtures/simple_expected.d.ts');
assertFileEqual(path.join(outDir, 'sorting.d.ts'), 'test/fixtures/sorting_expected.d.ts');
});
it('should verify multiple golden files with --verifyDir and --rootDir', () => {
copyFile('test/fixtures/simple_expected.d.ts', path.join(outDir, 'simple.d.ts'));
copyFile('test/fixtures/sorting_expected.d.ts', path.join(outDir, 'sorting.d.ts'));
const {stdout, status} = execute([
'--verifyDir', outDir, '--rootDir', 'test/fixtures', 'test/fixtures/simple.d.ts',
'test/fixtures/sorting.d.ts'
]);
chai.assert.equal(stdout, '');
chai.assert.equal(status, 0);
});
it('should generate respecting --stripExportPattern', () => {
const {status} = execute([
'--out', path.join(outDir, 'underscored.d.ts'), '--stripExportPattern', '^__.*',
'test/fixtures/underscored.d.ts'
]);
chai.assert.equal(status, 0);
assertFileEqual(
path.join(outDir, 'underscored.d.ts'), 'test/fixtures/underscored_expected.d.ts');
});
it('should not throw for aliased stripped exports', () => {
const {status} = execute([
'--out', path.join(outDir, 'stripped_alias.d.ts'), '--stripExportPattern', '^__.*',
'test/fixtures/stripped_alias.d.ts'
]);
chai.assert.equal(status, 0);
assertFileEqual(
path.join(outDir, 'stripped_alias.d.ts'), 'test/fixtures/stripped_alias_expected.d.ts');
});
it('should verify respecting --stripExportPattern', () => {
const {stdout, status} = execute([
'--verify', 'test/fixtures/underscored_expected.d.ts', 'test/fixtures/underscored.d.ts',
'--stripExportPattern', '^__.*'
]);
chai.assert.equal(stdout, '');
chai.assert.equal(status, 0);
});
it('should respect --allowModuleIdentifiers', () => {
const {stdout, status} = execute([
'--verify', 'test/fixtures/module_identifier_expected.d.ts', '--allowModuleIdentifiers',
'foo', 'test/fixtures/module_identifier.d.ts'
]);
chai.assert.equal(stdout, '');
chai.assert.equal(status, 0);
});
});
function copyFile(sourceFile: string, targetFile: string) {
fs.writeFileSync(targetFile, fs.readFileSync(sourceFile));
}
function execute(args: string[]): {stdout: string, stderr: string, status: number} {
// We need to determine the directory that includes the `ts-api-guardian` npm_package that
// will be used to spawn the CLI binary. This is a workaround because technically we shouldn't
// spawn a child process that doesn't have the custom NodeJS module resolution for Bazel.
const nodePath = path.join(path.dirname(require.resolve('../lib/cli.js')), '../');
const output = child_process.spawnSync(process.execPath, [BINARY_PATH, ...args], {
env: {
'NODE_PATH': nodePath,
}
});
chai.assert(!output.error, 'Child process failed or timed out: ' + output.error);
chai.assert(!output.signal, `Child process killed by signal ${output.signal}`);
return {
stdout: output.stdout.toString(),
stderr: output.stderr.toString(),
status: output.status
};
}