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test.js
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import path from 'path';
import fs from 'fs';
import stream from 'stream';
import test from 'ava';
import getStream from 'get-stream';
import isRunning from 'is-running';
import tempfile from 'tempfile';
import pEvent from 'p-event';
import execa from '..';
process.env.PATH = path.join(__dirname, 'fixtures') + path.delimiter + process.env.PATH;
process.env.FOO = 'foo';
const TIMEOUT_REGEXP = /timed out after/;
const ENOENT_REGEXP = process.platform === 'win32' ? /failed with exit code 1/ : /spawn.* ENOENT/;
test('execa()', async t => {
const {stdout} = await execa('noop', ['foo']);
t.is(stdout, 'foo');
});
if (process.platform === 'win32') {
test('execa() - cmd file', async t => {
const {stdout} = await execa('hello.cmd');
t.is(stdout, 'Hello World');
});
test('execa() - run cmd command', async t => {
const {stdout} = await execa('cmd', ['/c', 'hello.cmd']);
t.is(stdout, 'Hello World');
});
}
test('buffer', async t => {
const {stdout} = await execa('noop', ['foo'], {encoding: null});
t.true(Buffer.isBuffer(stdout));
t.is(stdout.toString(), 'foo');
});
test.serial('result.all shows both `stdout` and `stderr` intermixed', async t => {
const {all} = await execa('noop-132');
t.is(all, '132');
});
test('stdout/stderr/all are undefined if ignored', async t => {
const {stdout, stderr, all} = await execa('noop', {stdio: 'ignore'});
t.is(stdout, undefined);
t.is(stderr, undefined);
t.is(all, undefined);
});
test('stdout/stderr/all are undefined if ignored in sync mode', t => {
const {stdout, stderr, all} = execa.sync('noop', {stdio: 'ignore'});
t.is(stdout, undefined);
t.is(stderr, undefined);
t.is(all, undefined);
});
test('pass `stdout` to a file descriptor', async t => {
const file = tempfile('.txt');
await execa('test/fixtures/noop', ['foo bar'], {stdout: fs.openSync(file, 'w')});
t.is(fs.readFileSync(file, 'utf8'), 'foo bar\n');
});
test('pass `stderr` to a file descriptor', async t => {
const file = tempfile('.txt');
await execa('test/fixtures/noop-err', ['foo bar'], {stderr: fs.openSync(file, 'w')});
t.is(fs.readFileSync(file, 'utf8'), 'foo bar\n');
});
test('execa.sync()', t => {
const {stdout} = execa.sync('noop', ['foo']);
t.is(stdout, 'foo');
});
test('execa.sync() throws error if written to stderr', t => {
t.throws(() => {
execa.sync('foo');
}, ENOENT_REGEXP);
});
test('skip throwing when using reject option', async t => {
const {exitCode} = await execa('fail', {reject: false});
t.is(exitCode, 2);
});
test('skip throwing when using reject option in sync mode', t => {
const {exitCode} = execa.sync('fail', {reject: false});
t.is(exitCode, 2);
});
test('kill("SIGKILL") should terminate cleanly', async t => {
const subprocess = execa('node', ['./test/fixtures/no-killable'], {stdio: ['ipc']});
await pEvent(subprocess, 'message');
subprocess.kill('SIGKILL');
const {signal} = await t.throwsAsync(subprocess);
t.is(signal, 'SIGKILL');
});
// `SIGTERM` cannot be caught on Windows, and it always aborts the process (like `SIGKILL` on Unix).
// Therefore, this feature and those tests do not make sense on Windows.
if (process.platform !== 'win32') {
test('`forceKillAfterTimeout: false` should not kill after a timeout', async t => {
const subprocess = execa('node', ['./test/fixtures/no-killable'], {stdio: ['ipc']});
await pEvent(subprocess, 'message');
subprocess.kill('SIGTERM', {forceKillAfterTimeout: false});
t.true(isRunning(subprocess.pid));
subprocess.kill('SIGKILL');
});
test('`forceKillAfterTimeout: number` should kill after a timeout', async t => {
const subprocess = execa('node', ['./test/fixtures/no-killable'], {stdio: ['ipc']});
await pEvent(subprocess, 'message');
subprocess.kill('SIGTERM', {forceKillAfterTimeout: 50});
const {signal} = await t.throwsAsync(subprocess);
t.is(signal, 'SIGKILL');
});
test('`forceKillAfterTimeout: true` should kill after a timeout', async t => {
const subprocess = execa('node', ['./test/fixtures/no-killable'], {stdio: ['ipc']});
await pEvent(subprocess, 'message');
subprocess.kill('SIGTERM', {forceKillAfterTimeout: true});
const {signal} = await t.throwsAsync(subprocess);
t.is(signal, 'SIGKILL');
});
test('kill() with no arguments should kill after a timeout', async t => {
const subprocess = execa('node', ['./test/fixtures/no-killable'], {stdio: ['ipc']});
await pEvent(subprocess, 'message');
subprocess.kill();
const {signal} = await t.throwsAsync(subprocess);
t.is(signal, 'SIGKILL');
});
test('`forceKillAfterTimeout` should not be a float', t => {
t.throws(() => {
execa('noop').kill('SIGTERM', {forceKillAfterTimeout: 0.5});
}, {instanceOf: TypeError, message: /non-negative integer/});
});
test('`forceKillAfterTimeout` should not be negative', t => {
t.throws(() => {
execa('noop').kill('SIGTERM', {forceKillAfterTimeout: -1});
}, {instanceOf: TypeError, message: /non-negative integer/});
});
}
test('stripFinalNewline: true', async t => {
const {stdout} = await execa('noop', ['foo']);
t.is(stdout, 'foo');
});
test('stripFinalNewline: false', async t => {
const {stdout} = await execa('noop', ['foo'], {stripFinalNewline: false});
t.is(stdout, 'foo\n');
});
test('stripFinalNewline on failure', async t => {
const {stderr} = await t.throwsAsync(execa('noop-throw', ['foo'], {stripFinalNewline: true}));
t.is(stderr, 'foo');
});
test('stripFinalNewline in sync mode', t => {
const {stdout} = execa.sync('noop', ['foo'], {stripFinalNewline: true});
t.is(stdout, 'foo');
});
test('stripFinalNewline in sync mode on failure', t => {
const {stderr} = t.throws(() => {
execa.sync('noop-throw', ['foo'], {stripFinalNewline: true});
});
t.is(stderr, 'foo');
});
test('preferLocal: true', async t => {
await t.notThrowsAsync(execa('ava', ['--version'], {preferLocal: true, env: {PATH: ''}}));
});
test('preferLocal: false', async t => {
await t.throwsAsync(execa('ava', ['--version'], {preferLocal: false, env: {PATH: ''}}), ENOENT_REGEXP);
});
test('preferLocal: undefined', async t => {
await t.throwsAsync(execa('ava', ['--version'], {env: {PATH: ''}}), ENOENT_REGEXP);
});
test('localDir option', async t => {
const command = process.platform === 'win32' ? 'echo %PATH%' : 'echo $PATH';
const {stdout} = await execa(command, {shell: true, preferLocal: true, localDir: '/test'});
const envPaths = stdout.split(path.delimiter).map(envPath =>
envPath.replace(/\\/g, '/').replace(/^[^/]+/, '')
);
t.true(envPaths.some(envPath => envPath === '/test/node_modules/.bin'));
});
test('input option can be a String', async t => {
const {stdout} = await execa('stdin', {input: 'foobar'});
t.is(stdout, 'foobar');
});
test('input option can be a Buffer', async t => {
const {stdout} = await execa('stdin', {input: 'testing12'});
t.is(stdout, 'testing12');
});
test('input can be a Stream', async t => {
const s = new stream.PassThrough();
s.write('howdy');
s.end();
const {stdout} = await execa('stdin', {input: s});
t.is(stdout, 'howdy');
});
test('you can write to child.stdin', async t => {
const child = execa('stdin');
child.stdin.end('unicorns');
t.is((await child).stdout, 'unicorns');
});
test('input option can be a String - sync', t => {
const {stdout} = execa.sync('stdin', {input: 'foobar'});
t.is(stdout, 'foobar');
});
test('input option can be a Buffer - sync', t => {
const {stdout} = execa.sync('stdin', {input: Buffer.from('testing12', 'utf8')});
t.is(stdout, 'testing12');
});
test('stdin errors are handled', async t => {
const child = execa('noop');
child.stdin.emit('error', new Error('test'));
await t.throwsAsync(child, /test/);
});
test('child process errors are handled', async t => {
const child = execa('noop');
child.emit('error', new Error('test'));
await t.throwsAsync(child, /test/);
});
test('opts.stdout:ignore - stdout will not collect data', async t => {
const {stdout} = await execa('stdin', {
input: 'hello',
stdio: [undefined, 'ignore', undefined]
});
t.is(stdout, undefined);
});
test('helpful error trying to provide an input stream in sync mode', t => {
t.throws(
() => {
execa.sync('stdin', {input: new stream.PassThrough()});
},
/The `input` option cannot be a stream in sync mode/
);
});
test('child process errors rejects promise right away', async t => {
const child = execa('forever');
child.emit('error', new Error('test'));
await t.throwsAsync(child, /test/);
});
test('execa() returns a promise with kill() and pid', t => {
const {kill, pid} = execa('noop', ['foo']);
t.is(typeof kill, 'function');
t.is(typeof pid, 'number');
});
test('child_process.spawn() propagated errors have correct shape', t => {
const cp = execa('noop', {uid: -1});
t.notThrows(() => {
cp.catch(() => {});
cp.unref();
cp.on('error', () => {});
});
});
test('child_process.spawn() errors are propagated', async t => {
const {failed} = await t.throwsAsync(execa('noop', {uid: -1}));
t.true(failed);
});
test('child_process.spawnSync() errors are propagated with a correct shape', t => {
const {failed} = t.throws(() => {
execa.sync('noop', {timeout: -1});
});
t.true(failed);
});
test('maxBuffer affects stdout', async t => {
await t.notThrowsAsync(execa('max-buffer', ['stdout', '10'], {maxBuffer: 10}));
const {stdout, all} = await t.throwsAsync(execa('max-buffer', ['stdout', '11'], {maxBuffer: 10}), /max-buffer stdout/);
t.is(stdout, '.'.repeat(10));
t.is(all, '.'.repeat(10));
});
test('maxBuffer affects stderr', async t => {
await t.notThrowsAsync(execa('max-buffer', ['stderr', '10'], {maxBuffer: 10}));
const {stderr, all} = await t.throwsAsync(execa('max-buffer', ['stderr', '11'], {maxBuffer: 10}), /max-buffer stderr/);
t.is(stderr, '.'.repeat(10));
t.is(all, '.'.repeat(10));
});
test('do not buffer stdout when `buffer` set to `false`', async t => {
const promise = execa('max-buffer', ['stdout', '10'], {buffer: false});
const [result, stdout] = await Promise.all([
promise,
getStream(promise.stdout),
getStream(promise.all)
]);
t.is(result.stdout, undefined);
t.is(stdout, '.........\n');
});
test('do not buffer stderr when `buffer` set to `false`', async t => {
const promise = execa('max-buffer', ['stderr', '10'], {buffer: false});
const [result, stderr] = await Promise.all([
promise,
getStream(promise.stderr),
getStream(promise.all)
]);
t.is(result.stderr, undefined);
t.is(stderr, '.........\n');
});
test('use relative path with \'..\' chars', async t => {
const pathViaParentDir = path.join('..', path.basename(path.dirname(__dirname)), 'test', 'fixtures', 'noop');
const {stdout} = await execa(pathViaParentDir, ['foo']);
t.is(stdout, 'foo');
});
if (process.platform !== 'win32') {
test('execa() rejects if running non-executable', async t => {
const cp = execa('non-executable');
await t.throwsAsync(cp);
});
test('execa() rejects with correct error and doesn\'t throw if running non-executable with input', async t => {
await t.throwsAsync(execa('non-executable', {input: 'Hey!'}), /EACCES/);
});
}
test('timeout kills the process if it times out', async t => {
const {killed, timedOut} = await t.throwsAsync(execa('forever', {timeout: 1, message: TIMEOUT_REGEXP}));
t.false(killed);
t.true(timedOut);
});
test('timeout kills the process if it times out, in sync mode', async t => {
const {killed, timedOut} = await t.throws(() => {
execa.sync('forever', {timeout: 1, message: TIMEOUT_REGEXP});
});
t.false(killed);
t.true(timedOut);
});
test('timeout does not kill the process if it does not time out', async t => {
const {timedOut} = await execa('delay', ['500'], {timeout: 1e8});
t.false(timedOut);
});
test('timedOut is false if no timeout was set', async t => {
const {timedOut} = await execa('noop');
t.false(timedOut);
});
test('timedOut will be false if no timeout was set and zero exit code in sync mode', t => {
const {timedOut} = execa.sync('noop');
t.false(timedOut);
});
const command = async (t, expected, ...args) => {
const {command: failCommand} = await t.throwsAsync(execa('fail', args));
t.is(failCommand, `fail${expected}`);
const {command} = await execa('noop', args);
t.is(command, `noop${expected}`);
};
command.title = (message, expected) => `command is: ${JSON.stringify(expected)}`;
test(command, ' foo bar', 'foo', 'bar');
test(command, ' baz quz', 'baz', 'quz');
test(command, '');
// When child process exits before parent process
const spawnAndExit = async (t, cleanup, detached) => {
await t.notThrowsAsync(execa('sub-process-exit', [cleanup, detached]));
};
test('spawnAndExit', spawnAndExit, false, false);
test('spawnAndExit cleanup', spawnAndExit, true, false);
test('spawnAndExit detached', spawnAndExit, false, true);
test('spawnAndExit cleanup detached', spawnAndExit, true, true);
// When parent process exits before child process
const spawnAndKill = async (t, signal, cleanup, detached, isKilled) => {
const subprocess = execa('sub-process', [cleanup, detached], {stdio: ['ignore', 'ignore', 'ignore', 'ipc']});
const pid = await pEvent(subprocess, 'message');
t.true(Number.isInteger(pid));
t.true(isRunning(pid));
process.kill(subprocess.pid, signal);
await t.throwsAsync(subprocess);
t.false(isRunning(subprocess.pid));
t.is(isRunning(pid), !isKilled);
if (!isKilled) {
process.kill(pid, 'SIGKILL');
}
};
// Without `options.cleanup`:
// - on Windows subprocesses are killed if `options.detached: false`, but not
// if `options.detached: true`
// - on Linux subprocesses are never killed regardless of `options.detached`
// With `options.cleanup`, subprocesses are always killed
// - `options.cleanup` with SIGKILL is a noop, since it cannot be handled
const exitIfWindows = process.platform === 'win32';
test('spawnAndKill SIGTERM', spawnAndKill, 'SIGTERM', false, false, exitIfWindows);
test('spawnAndKill SIGKILL', spawnAndKill, 'SIGKILL', false, false, exitIfWindows);
test('spawnAndKill cleanup SIGTERM', spawnAndKill, 'SIGTERM', true, false, true);
test('spawnAndKill cleanup SIGKILL', spawnAndKill, 'SIGKILL', true, false, exitIfWindows);
test('spawnAndKill detached SIGTERM', spawnAndKill, 'SIGTERM', false, true, false);
test('spawnAndKill detached SIGKILL', spawnAndKill, 'SIGKILL', false, true, false);
test('spawnAndKill cleanup detached SIGTERM', spawnAndKill, 'SIGTERM', true, true, false);
test('spawnAndKill cleanup detached SIGKILL', spawnAndKill, 'SIGKILL', true, true, false);
if (process.platform !== 'win32') {
test('write to fast-exit process', async t => {
// Try-catch here is necessary, because this test is not 100% accurate
// Sometimes process can manage to accept input before exiting
try {
await execa(`fast-exit-${process.platform}`, [], {input: 'data'});
t.pass();
} catch (error) {
t.is(error.exitCode, 32);
}
});
}
test('use environment variables by default', async t => {
const {stdout} = await execa('environment');
t.deepEqual(stdout.split('\n'), ['foo', 'undefined']);
});
test('extend environment variables by default', async t => {
const {stdout} = await execa('environment', [], {env: {BAR: 'bar'}});
t.deepEqual(stdout.split('\n'), ['foo', 'bar']);
});
test('do not extend environment with `extendEnv: false`', async t => {
const {stdout} = await execa('environment', [], {env: {BAR: 'bar', PATH: process.env.PATH}, extendEnv: false});
t.deepEqual(stdout.split('\n'), ['undefined', 'bar']);
});
test('can use `options.shell: true`', async t => {
const {stdout} = await execa('node test/fixtures/noop foo', {shell: true});
t.is(stdout, 'foo');
});
test('can use `options.shell: string`', async t => {
const shell = process.platform === 'win32' ? 'cmd.exe' : '/bin/bash';
const {stdout} = await execa('node test/fixtures/noop foo', {shell});
t.is(stdout, 'foo');
});
test('use extend environment with `extendEnv: true` and `shell: true`', async t => {
process.env.TEST = 'test';
const command = process.platform === 'win32' ? 'echo %TEST%' : 'echo $TEST';
const {stdout} = await execa(command, {shell: true, env: {}, extendEnv: true});
t.is(stdout, 'test');
delete process.env.TEST;
});
test('do not buffer when streaming', async t => {
const {stdout} = execa('max-buffer', ['stdout', '21'], {maxBuffer: 10});
const result = await getStream(stdout);
t.is(result, '....................\n');
});
test('detach child process', async t => {
const {stdout} = await execa('detach');
const pid = Number(stdout);
t.true(Number.isInteger(pid));
t.true(isRunning(pid));
process.kill(pid, 'SIGKILL');
});
// See #128
test('removes exit handler on exit', async t => {
// FIXME: This relies on `signal-exit` internals
const ee = process.__signal_exit_emitter__;
const child = execa('noop');
const listener = ee.listeners('exit').pop();
await new Promise((resolve, reject) => {
child.on('error', reject);
child.on('exit', resolve);
});
const included = ee.listeners('exit').includes(listener);
t.false(included);
});
test('promise methods are not enumerable', t => {
const descriptors = Object.getOwnPropertyDescriptors(execa('noop'));
// eslint-disable-next-line promise/prefer-await-to-then
t.false(descriptors.then.enumerable);
t.false(descriptors.catch.enumerable);
// TOOD: Remove the `if`-guard when targeting Node.js 10
if (Promise.prototype.finally) {
t.false(descriptors.finally.enumerable);
}
});
// TOOD: Remove the `if`-guard when targeting Node.js 10
if (Promise.prototype.finally) {
test('finally function is executed on success', async t => {
let isCalled = false;
const {stdout} = await execa('noop', ['foo']).finally(() => {
isCalled = true;
});
t.is(isCalled, true);
t.is(stdout, 'foo');
});
test('finally function is executed on failure', async t => {
let isError = false;
const {stdout, stderr} = await t.throwsAsync(execa('exit', ['2']).finally(() => {
isError = true;
}));
t.is(isError, true);
t.is(typeof stdout, 'string');
t.is(typeof stderr, 'string');
});
test('throw in finally function bubbles up on success', async t => {
const {message} = await t.throwsAsync(execa('noop', ['foo']).finally(() => {
throw new Error('called');
}));
t.is(message, 'called');
});
test('throw in finally bubbles up on error', async t => {
const {message} = await t.throwsAsync(execa('exit', ['2']).finally(() => {
throw new Error('called');
}));
t.is(message, 'called');
});
}
test('cancel method kills the subprocess', t => {
const subprocess = execa('node');
subprocess.cancel();
t.true(subprocess.killed);
});
test('result.isCanceled is false when spawned.cancel() isn\'t called (success)', async t => {
const {isCanceled} = await execa('noop');
t.false(isCanceled);
});
test('result.isCanceled is false when spawned.cancel() isn\'t called (failure)', async t => {
const {isCanceled} = await t.throwsAsync(execa('fail'));
t.false(isCanceled);
});
test('result.isCanceled is false when spawned.cancel() isn\'t called in sync mode (success)', t => {
const {isCanceled} = execa.sync('noop');
t.false(isCanceled);
});
test('result.isCanceled is false when spawned.cancel() isn\'t called in sync mode (failure)', t => {
const {isCanceled} = t.throws(() => {
execa.sync('fail');
});
t.false(isCanceled);
});
test('calling cancel method throws an error with message "Command was canceled"', async t => {
const subprocess = execa('noop');
subprocess.cancel();
await t.throwsAsync(subprocess, {message: /Command was canceled/});
});
test('error.isCanceled is true when cancel method is used', async t => {
const subprocess = execa('noop');
subprocess.cancel();
const {isCanceled} = await t.throwsAsync(subprocess);
t.true(isCanceled);
});
test('error.isCanceled is false when kill method is used', async t => {
const subprocess = execa('noop');
subprocess.kill();
const {isCanceled} = await t.throwsAsync(subprocess);
t.false(isCanceled);
});
test('calling cancel method twice should show the same behaviour as calling it once', async t => {
const subprocess = execa('noop');
subprocess.cancel();
subprocess.cancel();
const {isCanceled} = await t.throwsAsync(subprocess);
t.true(isCanceled);
t.true(subprocess.killed);
});
test('calling cancel method on a successfully completed process does not make result.isCanceled true', async t => {
const subprocess = execa('noop');
const {isCanceled} = await subprocess;
subprocess.cancel();
t.false(isCanceled);
});
test('calling cancel method on a process which has been killed does not make error.isCanceled true', async t => {
const subprocess = execa('noop');
subprocess.kill();
const {isCanceled} = await t.throwsAsync(subprocess);
t.false(isCanceled);
});
test('allow commands with spaces and no array arguments', async t => {
const {stdout} = await execa('command with space');
t.is(stdout, '');
});
test('allow commands with spaces and array arguments', async t => {
const {stdout} = await execa('command with space', ['foo', 'bar']);
t.is(stdout, 'foo\nbar');
});
test('execa.command()', async t => {
const {stdout} = await execa.command('node test/fixtures/echo foo bar');
t.is(stdout, 'foo\nbar');
});
test('execa.command() ignores consecutive spaces', async t => {
const {stdout} = await execa.command('node test/fixtures/echo foo bar');
t.is(stdout, 'foo\nbar');
});
test('execa.command() allows escaping spaces in commands', async t => {
const {stdout} = await execa.command('command\\ with\\ space foo bar');
t.is(stdout, 'foo\nbar');
});
test('execa.command() allows escaping spaces in arguments', async t => {
const {stdout} = await execa.command('node test/fixtures/echo foo\\ bar');
t.is(stdout, 'foo bar');
});
test('execa.command() escapes other whitespaces', async t => {
const {stdout} = await execa.command('node test/fixtures/echo foo\tbar');
t.is(stdout, 'foo\tbar');
});
test('execa.command() trims', async t => {
const {stdout} = await execa.command(' node test/fixtures/echo foo bar ');
t.is(stdout, 'foo\nbar');
});
test('execa.command.sync()', t => {
const {stdout} = execa.commandSync('node test/fixtures/echo foo bar');
t.is(stdout, 'foo\nbar');
});