mirror of
https://github.com/microsoft/playwright.git
synced 2024-12-14 21:53:35 +03:00
565 lines
21 KiB
TypeScript
565 lines
21 KiB
TypeScript
/**
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* Copyright Microsoft Corporation. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import colors from 'colors/safe';
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import * as fs from 'fs';
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import * as path from 'path';
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import { test, expect, stripAscii } from './playwright-test-fixtures';
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const files = {
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'helper.ts': `
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export const test = pwt.test.extend({
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auto: [ async ({}, run, testInfo) => {
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testInfo.snapshotSuffix = '';
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await run();
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}, { auto: true } ]
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});
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`
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};
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test('should support golden', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.txt': `Hello world`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world').toMatchSnapshot('snapshot.txt');
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});
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`
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});
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expect(result.exitCode).toBe(0);
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});
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test('should fail on wrong golden', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.txt': `Line1
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Line2
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Line3
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Hello world line1
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Line5
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Line6
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Line7`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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const data = [];
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data.push('Line1');
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data.push('Line22');
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data.push('Line3');
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data.push('Hi world line2');
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data.push('Line5');
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data.push('Line6');
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data.push('Line7');
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expect(data.join('\\n')).toMatchSnapshot('snapshot.txt');
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});
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`
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});
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expect(result.exitCode).toBe(1);
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expect(result.output).toContain('Line1');
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expect(result.output).toContain('Line2' + colors.green('2'));
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expect(result.output).toContain('line' + colors.strikethrough(colors.red('1')) + colors.green('2'));
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expect(result.output).toContain('Line3');
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expect(result.output).toContain('Line5');
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expect(result.output).toContain('Line7');
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});
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test('should write detailed failure result to an output folder', async ({runInlineTest}, testInfo) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.txt': `Hello world`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world updated').toMatchSnapshot('snapshot.txt');
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});
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`
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});
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expect(result.exitCode).toBe(1);
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const outputText = stripAscii(result.output);
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expect(outputText).toContain('Snapshot comparison failed:');
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const expectedSnapshotArtifactPath = testInfo.outputPath('test-results', 'a-is-a-test', 'snapshot-expected.txt');
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const actualSnapshotArtifactPath = testInfo.outputPath('test-results', 'a-is-a-test', 'snapshot-actual.txt');
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expect(outputText).toContain(`Expected: ${expectedSnapshotArtifactPath}`);
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expect(outputText).toContain(`Received: ${actualSnapshotArtifactPath}`);
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expect(fs.existsSync(expectedSnapshotArtifactPath)).toBe(true);
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expect(fs.existsSync(actualSnapshotArtifactPath)).toBe(true);
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});
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test("doesn\'t create comparison artifacts in an output folder for passed negated snapshot matcher", async ({runInlineTest}, testInfo) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.txt': `Hello world`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world updated').not.toMatchSnapshot('snapshot.txt');
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});
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`
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});
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expect(result.exitCode).toBe(0);
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const outputText = stripAscii(result.output);
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const expectedSnapshotArtifactPath = testInfo.outputPath('test-results', 'a-is-a-test', 'snapshot-expected.txt');
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const actualSnapshotArtifactPath = testInfo.outputPath('test-results', 'a-is-a-test', 'snapshot-actual.txt');
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expect(outputText).not.toContain(`Expected: ${expectedSnapshotArtifactPath}`);
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expect(outputText).not.toContain(`Received: ${actualSnapshotArtifactPath}`);
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expect(fs.existsSync(expectedSnapshotArtifactPath)).toBe(false);
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expect(fs.existsSync(actualSnapshotArtifactPath)).toBe(false);
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});
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test('should pass on different snapshots with negate matcher', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.txt': `Hello world`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world updated').not.toMatchSnapshot('snapshot.txt');
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});
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`
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});
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expect(result.exitCode).toBe(0);
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});
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test('should fail on same snapshots with negate matcher', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.txt': `Hello world`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world').not.toMatchSnapshot('snapshot.txt');
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});
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`
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});
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expect(result.exitCode).toBe(1);
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expect(result.output).toContain('Snapshot comparison failed:');
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expect(result.output).toContain('Expected result should be different from the actual one.');
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});
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test('should write missing expectations locally', async ({runInlineTest}, testInfo) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world').toMatchSnapshot('snapshot.txt');
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});
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`
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}, {}, { CI: '' });
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expect(result.exitCode).toBe(1);
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const snapshotOutputPath = testInfo.outputPath('a.spec.js-snapshots/snapshot.txt');
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expect(result.output).toContain(`${snapshotOutputPath} is missing in snapshots, writing actual`);
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const data = fs.readFileSync(snapshotOutputPath);
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expect(data.toString()).toBe('Hello world');
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});
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test('shouldn\'t write missing expectations locally for negated matcher', async ({runInlineTest}, testInfo) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world').not.toMatchSnapshot('snapshot.txt');
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});
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`
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}, {}, { CI: '' });
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expect(result.exitCode).toBe(1);
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const snapshotOutputPath = testInfo.outputPath('a.spec.js-snapshots/snapshot.txt');
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expect(result.output).toContain(`${snapshotOutputPath} is missing in snapshots, matchers using ".not" won\'t write them automatically.`);
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expect(fs.existsSync(snapshotOutputPath)).toBe(false);
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});
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test('should update snapshot with the update-snapshots flag', async ({runInlineTest}, testInfo) => {
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const EXPECTED_SNAPSHOT = 'Hello world';
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const ACTUAL_SNAPSHOT = 'Hello world updated';
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.txt': EXPECTED_SNAPSHOT,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('${ACTUAL_SNAPSHOT}').toMatchSnapshot('snapshot.txt');
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});
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`
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}, { 'update-snapshots': true });
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expect(result.exitCode).toBe(0);
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const snapshotOutputPath = testInfo.outputPath('a.spec.js-snapshots/snapshot.txt');
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expect(result.output).toContain(`${snapshotOutputPath} does not match, writing actual.`);
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const data = fs.readFileSync(snapshotOutputPath);
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expect(data.toString()).toBe(ACTUAL_SNAPSHOT);
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});
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test('shouldn\'t update snapshot with the update-snapshots flag for negated matcher', async ({runInlineTest}, testInfo) => {
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const EXPECTED_SNAPSHOT = 'Hello world';
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const ACTUAL_SNAPSHOT = 'Hello world updated';
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.txt': EXPECTED_SNAPSHOT,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('${ACTUAL_SNAPSHOT}').not.toMatchSnapshot('snapshot.txt');
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});
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`
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}, { 'update-snapshots': true });
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expect(result.exitCode).toBe(0);
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const snapshotOutputPath = testInfo.outputPath('a.spec.js-snapshots/snapshot.txt');
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const data = fs.readFileSync(snapshotOutputPath);
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expect(data.toString()).toBe(EXPECTED_SNAPSHOT);
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});
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test('should silently write missing expectations locally with the update-snapshots flag', async ({runInlineTest}, testInfo) => {
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const ACTUAL_SNAPSHOT = 'Hello world new';
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const result = await runInlineTest({
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...files,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('${ACTUAL_SNAPSHOT}').toMatchSnapshot('snapshot.txt');
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});
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`
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}, { 'update-snapshots': true });
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expect(result.exitCode).toBe(0);
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const snapshotOutputPath = testInfo.outputPath('a.spec.js-snapshots/snapshot.txt');
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expect(result.output).toContain(`${snapshotOutputPath} is missing in snapshots, writing actual`);
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const data = fs.readFileSync(snapshotOutputPath);
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expect(data.toString()).toBe(ACTUAL_SNAPSHOT);
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});
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test('should silently write missing expectations locally with the update-snapshots flag for negated matcher', async ({runInlineTest}, testInfo) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world').not.toMatchSnapshot('snapshot.txt');
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});
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`
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}, { 'update-snapshots': true });
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expect(result.exitCode).toBe(1);
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const snapshotOutputPath = testInfo.outputPath('a.spec.js-snapshots/snapshot.txt');
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expect(result.output).toContain(`${snapshotOutputPath} is missing in snapshots, matchers using ".not" won\'t write them automatically.`);
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expect(fs.existsSync(snapshotOutputPath)).toBe(false);
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});
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test('should match multiple snapshots', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot1.txt': `Snapshot1`,
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'a.spec.js-snapshots/snapshot2.txt': `Snapshot2`,
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'a.spec.js-snapshots/snapshot3.txt': `Snapshot3`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Snapshot1').toMatchSnapshot('snapshot1.txt');
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expect('Snapshot2').toMatchSnapshot('snapshot2.txt');
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expect('Snapshot3').toMatchSnapshot('snapshot3.txt');
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});
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`
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});
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expect(result.exitCode).toBe(0);
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});
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test('should match snapshots from multiple projects', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'playwright.config.ts': `
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import * as path from 'path';
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module.exports = { projects: [
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{ testDir: path.join(__dirname, 'p1') },
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{ testDir: path.join(__dirname, 'p2') },
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]};
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`,
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'p1/a.spec.js': `
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const { test } = require('../helper');
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test('is a test', ({}) => {
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expect('Snapshot1').toMatchSnapshot('snapshot.txt');
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});
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`,
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'p1/a.spec.js-snapshots/snapshot.txt': `Snapshot1`,
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'p2/a.spec.js': `
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const { test } = require('../helper');
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test('is a test', ({}) => {
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expect('Snapshot2').toMatchSnapshot('snapshot.txt');
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});
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`,
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'p2/a.spec.js-snapshots/snapshot.txt': `Snapshot2`,
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});
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expect(result.exitCode).toBe(0);
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});
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test('should use provided name', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/provided.txt': `Hello world`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world').toMatchSnapshot('provided.txt');
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});
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`
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});
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expect(result.exitCode).toBe(0);
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});
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test('should throw without a name', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world').toMatchSnapshot();
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});
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`
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});
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expect(result.exitCode).toBe(1);
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expect(result.output).toContain('toMatchSnapshot() requires a "name" parameter');
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});
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test('should use provided name via options', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/provided.txt': `Hello world`,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect('Hello world').toMatchSnapshot({ name: 'provided.txt' });
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});
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`
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});
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expect(result.exitCode).toBe(0);
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});
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test('should compare binary', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.dat': Buffer.from([1,2,3,4]),
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect(Buffer.from([1,2,3,4])).toMatchSnapshot('snapshot.dat');
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});
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`
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});
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expect(result.exitCode).toBe(0);
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});
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test('should compare PNG images', async ({runInlineTest}) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.png':
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Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==', 'base64'),
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect(Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==', 'base64')).toMatchSnapshot('snapshot.png');
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});
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`
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});
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expect(result.exitCode).toBe(0);
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});
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test('should compare different PNG images', async ({runInlineTest}, testInfo) => {
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.png':
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Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==', 'base64'),
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect(Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII==', 'base64')).toMatchSnapshot('snapshot.png');
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});
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`
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});
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const outputText = stripAscii(result.output);
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expect(result.exitCode).toBe(1);
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expect(outputText).toContain('Snapshot comparison failed:');
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const expectedSnapshotArtifactPath = testInfo.outputPath('test-results', 'a-is-a-test', 'snapshot-expected.png');
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const actualSnapshotArtifactPath = testInfo.outputPath('test-results', 'a-is-a-test', 'snapshot-actual.png');
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const diffSnapshotArtifactPath = testInfo.outputPath('test-results', 'a-is-a-test', 'snapshot-diff.png');
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expect(outputText).toContain(`Expected: ${expectedSnapshotArtifactPath}`);
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expect(outputText).toContain(`Received: ${actualSnapshotArtifactPath}`);
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expect(outputText).toContain(`Diff: ${diffSnapshotArtifactPath}`);
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expect(fs.existsSync(expectedSnapshotArtifactPath)).toBe(true);
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expect(fs.existsSync(actualSnapshotArtifactPath)).toBe(true);
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expect(fs.existsSync(diffSnapshotArtifactPath)).toBe(true);
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});
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test('should respect threshold', async ({runInlineTest}) => {
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const expected = fs.readFileSync(path.join(__dirname, 'assets/screenshot-canvas-expected.png'));
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const actual = fs.readFileSync(path.join(__dirname, 'assets/screenshot-canvas-actual.png'));
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const result = await runInlineTest({
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...files,
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'a.spec.js-snapshots/snapshot.png': expected,
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'a.spec.js-snapshots/snapshot2.png': expected,
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'a.spec.js': `
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const { test } = require('./helper');
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test('is a test', ({}) => {
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expect(Buffer.from('${actual.toString('base64')}', 'base64')).toMatchSnapshot('snapshot.png', { threshold: 0.3 });
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expect(Buffer.from('${actual.toString('base64')}', 'base64')).not.toMatchSnapshot('snapshot.png', { threshold: 0.2 });
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expect(Buffer.from('${actual.toString('base64')}', 'base64')).toMatchSnapshot('snapshot2.png', { threshold: 0.3 });
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expect(Buffer.from('${actual.toString('base64')}', 'base64')).toMatchSnapshot({ name: 'snapshot2.png', threshold: 0.3 });
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});
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`
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});
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expect(result.exitCode).toBe(0);
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});
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test('should respect project threshold', async ({runInlineTest}) => {
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const expected = fs.readFileSync(path.join(__dirname, 'assets/screenshot-canvas-expected.png'));
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const actual = fs.readFileSync(path.join(__dirname, 'assets/screenshot-canvas-actual.png'));
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const result = await runInlineTest({
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...files,
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'playwright.config.ts': `
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module.exports = { projects: [
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{ expect: { toMatchSnapshot: { threshold: 0.2 } } },
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]};
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`,
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'a.spec.js-snapshots/snapshot.png': expected,
|
|
'a.spec.js-snapshots/snapshot2.png': expected,
|
|
'a.spec.js': `
|
|
const { test } = require('./helper');
|
|
test('is a test', ({}) => {
|
|
expect(Buffer.from('${actual.toString('base64')}', 'base64')).toMatchSnapshot('snapshot.png', { threshold: 0.3 });
|
|
expect(Buffer.from('${actual.toString('base64')}', 'base64')).not.toMatchSnapshot('snapshot.png');
|
|
expect(Buffer.from('${actual.toString('base64')}', 'base64')).toMatchSnapshot('snapshot2.png', { threshold: 0.3 });
|
|
expect(Buffer.from('${actual.toString('base64')}', 'base64')).toMatchSnapshot({ name: 'snapshot2.png', threshold: 0.3 });
|
|
});
|
|
`
|
|
});
|
|
expect(result.exitCode).toBe(0);
|
|
});
|
|
|
|
test('should sanitize snapshot name', async ({runInlineTest}) => {
|
|
const result = await runInlineTest({
|
|
...files,
|
|
'a.spec.js-snapshots/-snapshot-.txt': `Hello world`,
|
|
'a.spec.js': `
|
|
const { test } = require('./helper');
|
|
test('is a test', ({}) => {
|
|
expect('Hello world').toMatchSnapshot('../../snapshot!.txt');
|
|
});
|
|
`
|
|
});
|
|
expect(result.exitCode).toBe(0);
|
|
});
|
|
|
|
test('should write missing expectations with sanitized snapshot name', async ({runInlineTest}, testInfo) => {
|
|
const result = await runInlineTest({
|
|
...files,
|
|
'a.spec.js': `
|
|
const { test } = require('./helper');
|
|
test('is a test', ({}) => {
|
|
expect('Hello world').toMatchSnapshot('../../snapshot!.txt');
|
|
});
|
|
`
|
|
}, {}, { CI: '' });
|
|
|
|
expect(result.exitCode).toBe(1);
|
|
const snapshotOutputPath = testInfo.outputPath('a.spec.js-snapshots/-snapshot-.txt');
|
|
expect(result.output).toContain(`${snapshotOutputPath} is missing in snapshots, writing actual`);
|
|
const data = fs.readFileSync(snapshotOutputPath);
|
|
expect(data.toString()).toBe('Hello world');
|
|
});
|
|
|
|
test('should attach expected/actual/diff', async ({runInlineTest}, testInfo) => {
|
|
const result = await runInlineTest({
|
|
...files,
|
|
'a.spec.js-snapshots/snapshot.png':
|
|
Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==', 'base64'),
|
|
'a.spec.js': `
|
|
const { test } = require('./helper');
|
|
test.afterEach(async ({}, testInfo) => {
|
|
console.log('## ' + JSON.stringify(testInfo.attachments));
|
|
});
|
|
test('is a test', ({}) => {
|
|
expect(Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII==', 'base64')).toMatchSnapshot('snapshot.png');
|
|
});
|
|
`
|
|
});
|
|
|
|
const outputText = stripAscii(result.output);
|
|
const attachments = outputText.split('\n').filter(l => l.startsWith('## ')).map(l => l.substring(3)).map(l => JSON.parse(l))[0];
|
|
for (const attachment of attachments)
|
|
attachment.path = attachment.path.replace(/\\/g, '/').replace(/.*test-results\//, '');
|
|
expect(attachments).toEqual([
|
|
{
|
|
name: 'expected',
|
|
contentType: 'image/png',
|
|
path: 'a-is-a-test/snapshot-expected.png'
|
|
},
|
|
{
|
|
name: 'actual',
|
|
contentType: 'image/png',
|
|
path: 'a-is-a-test/snapshot-actual.png'
|
|
},
|
|
{
|
|
name: 'diff',
|
|
contentType: 'image/png',
|
|
path: 'a-is-a-test/snapshot-diff.png'
|
|
}
|
|
]);
|
|
});
|
|
|
|
test('should attach expected/actual and no diff', async ({runInlineTest}, testInfo) => {
|
|
const result = await runInlineTest({
|
|
...files,
|
|
'a.spec.js-snapshots/snapshot.png':
|
|
Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAYAAABytg0kAAAAEklEQVR42mP8z8AARAwMjDAGACwBA/9IB8FMAAAAAElFTkSuQmCC', 'base64'),
|
|
'a.spec.js': `
|
|
const { test } = require('./helper');
|
|
test.afterEach(async ({}, testInfo) => {
|
|
console.log('## ' + JSON.stringify(testInfo.attachments));
|
|
});
|
|
test('is a test', ({}) => {
|
|
expect(Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII==', 'base64')).toMatchSnapshot('snapshot.png');
|
|
});
|
|
`
|
|
});
|
|
|
|
const outputText = stripAscii(result.output);
|
|
expect(outputText).toContain('Sizes differ; expected image 2px X 2px, but got 1px X 1px.');
|
|
const attachments = outputText.split('\n').filter(l => l.startsWith('## ')).map(l => l.substring(3)).map(l => JSON.parse(l))[0];
|
|
for (const attachment of attachments)
|
|
attachment.path = attachment.path.replace(/\\/g, '/').replace(/.*test-results\//, '');
|
|
expect(attachments).toEqual([
|
|
{
|
|
name: 'expected',
|
|
contentType: 'image/png',
|
|
path: 'a-is-a-test/snapshot-expected.png'
|
|
},
|
|
{
|
|
name: 'actual',
|
|
contentType: 'image/png',
|
|
path: 'a-is-a-test/snapshot-actual.png'
|
|
},
|
|
]);
|
|
});
|
|
|