107 lines
3.4 KiB
TypeScript
107 lines
3.4 KiB
TypeScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import * as path from 'path';
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import * as fs from 'graceful-fs';
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import {cleanup, makeTemplate, writeFiles} from '../Utils';
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import runJest from '../runJest';
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const DIR = path.resolve(__dirname, '../to-throw-error-matching-snapshot');
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const TESTS_DIR = path.resolve(DIR, '__tests__');
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beforeEach(() => cleanup(TESTS_DIR));
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afterAll(() => cleanup(TESTS_DIR));
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test('works fine when function throws error', () => {
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const filename = 'works-fine-when-function-throws-error.test.js';
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const template =
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makeTemplate(`test('works fine when function throws error', () => {
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expect(() => { throw new Error('apple'); })
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.toThrowErrorMatchingSnapshot();
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});
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`);
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{
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writeFiles(TESTS_DIR, {[filename]: template()});
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const {stderr, exitCode} = runJest(DIR, ['-w=1', '--ci=false', filename]);
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expect(stderr).toMatch('1 snapshot written from 1 test suite.');
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expect(exitCode).toBe(0);
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}
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});
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test("throws the error if tested function didn't throw error", () => {
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const filename = 'throws-if-tested-function-did-not-throw.test.js';
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const template =
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makeTemplate(`test('throws the error if tested function did not throw error', () => {
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expect(() => {}).toThrowErrorMatchingSnapshot();
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});
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`);
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{
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writeFiles(TESTS_DIR, {[filename]: template()});
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const {stderr, exitCode} = runJest(DIR, ['-w=1', '--ci=false', filename]);
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expect(stderr).toMatch('Received function did not throw');
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expect(exitCode).toBe(1);
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}
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});
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test('accepts custom snapshot name', () => {
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const filename = 'accept-custom-snapshot-name.test.js';
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const template = makeTemplate(`test('accepts custom snapshot name', () => {
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expect(() => { throw new Error('apple'); })
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.toThrowErrorMatchingSnapshot('custom-name');
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});
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`);
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{
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writeFiles(TESTS_DIR, {[filename]: template()});
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const {stderr, exitCode} = runJest(DIR, ['-w=1', '--ci=false', filename]);
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expect(stderr).toMatch('1 snapshot written from 1 test suite.');
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expect(exitCode).toBe(0);
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}
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});
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test('cannot be used with .not', () => {
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const filename = 'cannot-be-used-with-not.test.js';
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const template = makeTemplate(`test('cannot be used with .not', () => {
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expect(() => { throw new Error('apple'); })
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.not
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.toThrowErrorMatchingSnapshot();
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});
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`);
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{
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writeFiles(TESTS_DIR, {[filename]: template()});
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const {stderr, exitCode} = runJest(DIR, ['-w=1', '--ci=false', filename]);
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expect(stderr).toMatch('Snapshot matchers cannot be used with not');
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expect(exitCode).toBe(1);
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}
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});
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test('should support rejecting promises', () => {
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const filename = 'should-support-rejecting-promises.test.js';
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const template =
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makeTemplate(`test('should support rejecting promises', () => {
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return expect(Promise.reject(new Error('octopus'))).rejects.toThrowErrorMatchingSnapshot();
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});
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`);
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{
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writeFiles(TESTS_DIR, {[filename]: template()});
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const {stderr, exitCode} = runJest(DIR, ['-w=1', '--ci=false', filename]);
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const snapshot = fs.readFileSync(
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`${TESTS_DIR}/__snapshots__/${filename}.snap`,
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'utf8',
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);
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expect(stderr).toMatch('1 snapshot written from 1 test suite.');
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expect(snapshot).toMatchSnapshot();
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expect(exitCode).toBe(0);
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}
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});
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