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Co-authored-by: spalger <[email protected]>
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133 changes: 133 additions & 0 deletions
133
packages/kbn-test/src/functional_test_runner/lib/snapshots/decorate_snapshot_ui.test.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| /* | ||
| * Licensed to Elasticsearch B.V. under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch B.V. licenses this file to you under | ||
| * the Apache License, Version 2.0 (the "License"); you may | ||
| * not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
|
|
||
| import { Test } from '../../fake_mocha_types'; | ||
| import { Lifecycle } from '../lifecycle'; | ||
| import { decorateSnapshotUi, expectSnapshot } from './decorate_snapshot_ui'; | ||
| import path from 'path'; | ||
| import fs from 'fs'; | ||
|
|
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| describe('decorateSnapshotUi', () => { | ||
| describe('when running a test', () => { | ||
| let lifecycle: Lifecycle; | ||
| beforeEach(() => { | ||
| lifecycle = new Lifecycle(); | ||
| decorateSnapshotUi(lifecycle, false); | ||
| }); | ||
|
|
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| it('passes when the snapshot matches the actual value', async () => { | ||
| const test: Test = { | ||
| title: 'Test', | ||
| file: 'foo.ts', | ||
| parent: { | ||
| file: 'foo.ts', | ||
| tests: [], | ||
| suites: [], | ||
| }, | ||
| } as any; | ||
|
|
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| await lifecycle.beforeEachTest.trigger(test); | ||
|
|
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| expect(() => { | ||
| expectSnapshot('foo').toMatchInline(`"foo"`); | ||
| }).not.toThrow(); | ||
| }); | ||
|
|
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| it('throws when the snapshot does not match the actual value', async () => { | ||
| const test: Test = { | ||
| title: 'Test', | ||
| file: 'foo.ts', | ||
| parent: { | ||
| file: 'foo.ts', | ||
| tests: [], | ||
| suites: [], | ||
| }, | ||
| } as any; | ||
|
|
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| await lifecycle.beforeEachTest.trigger(test); | ||
|
|
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| expect(() => { | ||
| expectSnapshot('foo').toMatchInline(`"bar"`); | ||
| }).toThrow(); | ||
| }); | ||
|
|
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| it('writes a snapshot to an external file if it does not exist', async () => { | ||
| const test: Test = { | ||
| title: 'Test', | ||
| file: __filename, | ||
| isPassed: () => true, | ||
| } as any; | ||
|
|
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| // @ts-expect-error | ||
| test.parent = { | ||
| file: __filename, | ||
| tests: [test], | ||
| suites: [], | ||
| }; | ||
|
|
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| await lifecycle.beforeEachTest.trigger(test); | ||
|
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| const snapshotFile = path.resolve( | ||
| __dirname, | ||
| '__snapshots__', | ||
| 'decorate_snapshot_ui.test.snap' | ||
| ); | ||
|
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| expect(fs.existsSync(snapshotFile)).toBe(false); | ||
|
|
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| expect(() => { | ||
| expectSnapshot('foo').toMatch(); | ||
| }).not.toThrow(); | ||
|
|
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| await lifecycle.afterTestSuite.trigger(test.parent); | ||
|
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| expect(fs.existsSync(snapshotFile)).toBe(true); | ||
|
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| fs.unlinkSync(snapshotFile); | ||
|
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| fs.rmdirSync(path.resolve(__dirname, '__snapshots__')); | ||
| }); | ||
| }); | ||
|
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| describe('when updating snapshots', () => { | ||
| let lifecycle: Lifecycle; | ||
| beforeEach(() => { | ||
| lifecycle = new Lifecycle(); | ||
| decorateSnapshotUi(lifecycle, true); | ||
| }); | ||
|
|
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| it("doesn't throw if the value does not match", async () => { | ||
| const test: Test = { | ||
| title: 'Test', | ||
| file: 'foo.ts', | ||
| parent: { | ||
| file: 'foo.ts', | ||
| tests: [], | ||
| suites: [], | ||
| }, | ||
| } as any; | ||
|
|
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| await lifecycle.beforeEachTest.trigger(test); | ||
|
|
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| expect(() => { | ||
| expectSnapshot('bar').toMatchInline(`"foo"`); | ||
| }).not.toThrow(); | ||
| }); | ||
| }); | ||
| }); |
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