/
globalSetup.test.ts
163 lines (128 loc) · 4.69 KB
/
globalSetup.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 {tmpdir} from 'os';
import * as path from 'path';
import * as fs from 'graceful-fs';
import runJest, {json as runWithJson} from '../runJest';
import {cleanup, run} from '../Utils';
const DIR = path.join(tmpdir(), 'jest-global-setup');
const project1DIR = path.join(tmpdir(), 'jest-global-setup-project-1');
const project2DIR = path.join(tmpdir(), 'jest-global-setup-project-2');
const customTransformDIR = path.join(
tmpdir(),
'jest-global-setup-custom-transform',
);
const nodeModulesDIR = path.join(tmpdir(), 'jest-global-setup-node-modules');
const e2eDir = path.resolve(__dirname, '../global-setup');
beforeAll(() => {
run('yarn', e2eDir);
});
beforeEach(() => {
cleanup(DIR);
cleanup(project1DIR);
cleanup(project2DIR);
cleanup(customTransformDIR);
cleanup(nodeModulesDIR);
});
afterAll(() => {
cleanup(DIR);
cleanup(project1DIR);
cleanup(project2DIR);
cleanup(customTransformDIR);
cleanup(nodeModulesDIR);
});
test('globalSetup is triggered once before all test suites', () => {
const setupPath = path.join(e2eDir, 'setup.js');
const result = runWithJson(e2eDir, [
`--globalSetup=${setupPath}`,
`--testPathPattern=__tests__`,
]);
expect(result.exitCode).toBe(0);
const files = fs.readdirSync(DIR);
expect(files).toHaveLength(1);
const setup = fs.readFileSync(path.join(DIR, files[0]), 'utf8');
expect(setup).toBe('setup');
});
test('jest throws an error when globalSetup does not export a function', () => {
const setupPath = path.resolve(__dirname, '../global-setup/invalidSetup.js');
const {exitCode, stderr} = runJest(e2eDir, [
`--globalSetup=${setupPath}`,
`--testPathPattern=__tests__`,
]);
expect(exitCode).toBe(1);
expect(stderr).toMatch(
`TypeError: globalSetup file must export a function at ${setupPath}`,
);
});
test('globalSetup function gets jest config object as a parameter', () => {
const setupPath = path.resolve(e2eDir, 'setupWithConfig.js');
const testPathPattern = 'pass';
const result = runJest(e2eDir, [
`--globalSetup=${setupPath}`,
`--testPathPattern=${testPathPattern}`,
]);
expect(result.stdout).toBe(testPathPattern);
});
test('should call globalSetup function of multiple projects', () => {
const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
const result = runWithJson(e2eDir, [`--config=${configPath}`]);
expect(result.exitCode).toBe(0);
expect(fs.existsSync(DIR)).toBe(true);
expect(fs.existsSync(project1DIR)).toBe(true);
expect(fs.existsSync(project2DIR)).toBe(true);
});
test('should not call a globalSetup of a project if there are no tests to run from this project', () => {
const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
const result = runWithJson(e2eDir, [
`--config=${configPath}`,
'--testPathPattern=project-1',
]);
expect(result.exitCode).toBe(0);
expect(fs.existsSync(DIR)).toBe(true);
expect(fs.existsSync(project1DIR)).toBe(true);
expect(fs.existsSync(project2DIR)).toBe(false);
});
test('should not call any globalSetup if there are no tests to run', () => {
const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
const result = runWithJson(e2eDir, [
`--config=${configPath}`,
// onlyChanged ensures there are no tests to run
'--onlyChanged',
]);
expect(result.exitCode).toBe(0);
expect(fs.existsSync(DIR)).toBe(false);
expect(fs.existsSync(project1DIR)).toBe(false);
expect(fs.existsSync(project2DIR)).toBe(false);
});
test('globalSetup works with default export', () => {
const setupPath = path.resolve(e2eDir, 'setupWithDefaultExport.js');
const testPathPattern = 'pass';
const result = runJest(e2eDir, [
`--globalSetup=${setupPath}`,
`--testPathPattern=${testPathPattern}`,
]);
expect(result.stdout).toBe(testPathPattern);
});
test('globalSetup throws with named export', () => {
const setupPath = path.resolve(e2eDir, 'invalidSetupWithNamedExport.js');
const {exitCode, stderr} = runJest(e2eDir, [
`--globalSetup=${setupPath}`,
`--testPathPattern=__tests__`,
]);
expect(exitCode).toBe(1);
expect(stderr).toMatch(
`TypeError: globalSetup file must export a function at ${setupPath}`,
);
});
test('should not transpile the transformer', () => {
const {exitCode} = runJest('global-setup-custom-transform', [`--no-cache`]);
expect(exitCode).toBe(0);
});
test('should transform node_modules if configured by transformIgnorePatterns', () => {
const {exitCode} = runJest('global-setup-node-modules', [`--no-cache`]);
expect(exitCode).toBe(0);
});