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nativeEsm.test.ts
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nativeEsm.test.ts
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import {resolve} from 'path';
import {onNodeVersions} from '@jest/test-utils';
import {extractSummary, runYarnInstall} from '../Utils';
import runJest, {getConfig} from '../runJest';
// for unknown reason the "runs test with native ESM" test occasionally ends up
// with process being killed with SIGSEGV (Segmentation fault) signal
jest.retryTimes(3);
const DIR = resolve(__dirname, '../native-esm');
beforeAll(() => {
runYarnInstall(DIR);
});
test('test config is without transform', () => {
const {configs} = getConfig(DIR);
expect(configs).toHaveLength(1);
expect(configs[0].transform).toEqual([]);
});
test('runs test with native ESM', () => {
const {exitCode, stderr, stdout} = runJest(DIR, ['native-esm.test.js'], {
nodeOptions: '--experimental-vm-modules --no-warnings',
});
const {summary} = extractSummary(stderr);
expect(summary).toMatchSnapshot();
expect(stdout).toBe('');
expect(exitCode).toBe(0);
});
test('supports top-level await', () => {
const {exitCode, stderr, stdout} = runJest(DIR, ['native-esm.tla.test.js'], {
nodeOptions: '--experimental-vm-modules --no-warnings',
});
const {summary} = extractSummary(stderr);
expect(summary).toMatchSnapshot();
expect(stdout).toBe('');
expect(exitCode).toBe(0);
});
// minimum version supported by discord.js
onNodeVersions('>=16.9.0', () => {
test('support re-exports from CJS of dual packages', () => {
const {exitCode, stderr, stdout} = runJest(
DIR,
['native-esm-deep-cjs-reexport.test.js'],
{nodeOptions: '--experimental-vm-modules --no-warnings'},
);
const {summary} = extractSummary(stderr);
expect(summary).toMatchSnapshot();
expect(stdout).toBe('');
expect(exitCode).toBe(0);
});
});
test('support re-exports from CJS of core module', () => {
const {exitCode, stderr, stdout} = runJest(
DIR,
['native-esm-core-cjs-reexport.test.js'],
{nodeOptions: '--experimental-vm-modules --no-warnings'},
);
const {summary} = extractSummary(stderr);
expect(summary).toMatchSnapshot();
expect(stdout).toBe('');
expect(exitCode).toBe(0);
});
test('runs WebAssembly (Wasm) test with native ESM', () => {
const {exitCode, stderr, stdout} = runJest(DIR, ['native-esm-wasm.test.js'], {
nodeOptions: '--experimental-vm-modules --no-warnings',
});
const {summary} = extractSummary(stderr);
expect(summary).toMatchSnapshot();
expect(stdout).toBe('');
expect(exitCode).toBe(0);
});
// version where `vm` API gets `import assertions`
onNodeVersions('>=16.12.0', () => {
test('enforces import assertions', () => {
const {exitCode, stderr, stdout} = runJest(
DIR,
['native-esm-missing-import-assertions.test'],
{nodeOptions: '--experimental-vm-modules --no-warnings'},
);
const {rest} = extractSummary(stderr);
expect(rest).toContain(
'package.json" needs an import assertion of type "json"',
);
expect(stdout).toBe('');
expect(exitCode).toBe(1);
});
test('supports import assertions', () => {
const {exitCode, stderr, stdout} = runJest(
DIR,
['native-esm-import-assertions.test'],
{nodeOptions: '--experimental-vm-modules --no-warnings'},
);
const {summary} = extractSummary(stderr);
expect(summary).toMatchSnapshot();
expect(stdout).toBe('');
expect(exitCode).toBe(0);
});
});
onNodeVersions('<16.12.0', () => {
test('does not enforce import assertions', () => {
const {exitCode, stderr, stdout} = runJest(
DIR,
['native-esm-missing-import-assertions.test'],
{nodeOptions: '--experimental-vm-modules --no-warnings'},
);
const {summary} = extractSummary(stderr);
expect(summary).toMatchSnapshot();
expect(stdout).toBe('');
expect(exitCode).toBe(0);
});
test('syntax error for import assertions', () => {
const {exitCode, stderr, stdout} = runJest(
DIR,
['native-esm-import-assertions.test'],
{nodeOptions: '--experimental-vm-modules --no-warnings'},
);
const {rest} = extractSummary(stderr);
expect(rest).toContain('SyntaxError: Unexpected identifier');
expect(stdout).toBe('');
expect(exitCode).toBe(1);
});
});