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37 changes: 37 additions & 0 deletions
37
integration-tests/__tests__/__snapshots__/expect_async_matcher.js.snap
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| // Jest Snapshot v1, https://goo.gl/fbAQLP | ||
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| exports[`works with expected non promise values and not is a failure 1`] = ` | ||
| "Expected value to not have length: | ||
| 2 | ||
| Received: | ||
| 1,2 | ||
| received.length: | ||
| 2" | ||
| `; | ||
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| exports[`works with expected non promise values is a failure 1`] = ` | ||
| "Expected value to have length: | ||
| 2 | ||
| Received: | ||
| 1 | ||
| received.length: | ||
| 1" | ||
| `; | ||
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| exports[`works with expected promise values and not is a failure 1`] = ` | ||
| "Expected value to not have length: | ||
| 2 | ||
| Received: | ||
| 1,2 | ||
| received.length: | ||
| 2" | ||
| `; | ||
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| exports[`works with expected promise values is a failure 1`] = ` | ||
| "Expected value to have length: | ||
| 2 | ||
| Received: | ||
| 1 | ||
| received.length: | ||
| 1" | ||
| `; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| /** | ||
| * Copyright (c) 2014-present, Facebook, Inc. 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. | ||
| * | ||
| * @flow | ||
| */ | ||
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| 'use strict'; | ||
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| async function toHaveLengthAsync( | ||
| received: any, | ||
| lengthPromise: Promise<number>, | ||
| ) { | ||
| const length = await lengthPromise; | ||
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| const pass = received.length === length; | ||
| const message = pass | ||
| ? () => | ||
| `Expected value to not have length:\n` + | ||
| ` ${length}\n` + | ||
| `Received:\n` + | ||
| ` ${received}\n` + | ||
| `received.length:\n` + | ||
| ` ${received.length}` | ||
| : () => | ||
| `Expected value to have length:\n` + | ||
| ` ${length}\n` + | ||
| `Received:\n` + | ||
| ` ${received}\n` + | ||
| `received.length:\n` + | ||
| ` ${received.length}`; | ||
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| return {message, pass}; | ||
| } | ||
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| expect.extend({ | ||
| toHaveLengthAsync, | ||
| }); | ||
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| it('works with expected non promise values', async () => { | ||
| await (expect([1]): any).toHaveLengthAsync(Promise.resolve(1)); | ||
| }); | ||
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| it('works with expected non promise values is a failure', async () => { | ||
| try { | ||
| await (expect([1]): any).toHaveLengthAsync(Promise.resolve(2)); | ||
| } catch (error) { | ||
| expect(error).toBeDefined(); | ||
| expect(error.message).toMatchSnapshot(); | ||
| } | ||
| }); | ||
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| it('works with expected non promise values and not', async () => { | ||
| await (expect([1, 2]): any).not.toHaveLengthAsync(Promise.resolve(1)); | ||
| }); | ||
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| it('works with expected non promise values and not is a failure', async () => { | ||
| try { | ||
| await (expect([1, 2]): any).not.toHaveLengthAsync(Promise.resolve(2)); | ||
| } catch (error) { | ||
| expect(error).toBeDefined(); | ||
| expect(error.message).toMatchSnapshot(); | ||
| } | ||
| }); | ||
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| it('works with expected promise values', async () => { | ||
| await (expect(Promise.resolve([1])).resolves: any).toHaveLengthAsync( | ||
| Promise.resolve(1), | ||
| ); | ||
| }); | ||
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| it('works with expected promise values is a failure', async () => { | ||
| try { | ||
| await (expect(Promise.resolve([1])): any).resolves.toHaveLengthAsync( | ||
| Promise.resolve(2), | ||
| ); | ||
| } catch (error) { | ||
| expect(error).toBeDefined(); | ||
| expect(error.message).toMatchSnapshot(); | ||
| } | ||
| }); | ||
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| it('works with expected promise values and not', async () => { | ||
| await (expect(Promise.resolve([1, 2])).resolves.not: any).toHaveLengthAsync( | ||
| Promise.resolve(1), | ||
| ); | ||
| }); | ||
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| it('works with expected promise values and not is a failure', async () => { | ||
| try { | ||
| await (expect(Promise.resolve([1, 2])).resolves.not: any).toHaveLengthAsync( | ||
| Promise.resolve(2), | ||
| ); | ||
| } catch (error) { | ||
| expect(error).toBeDefined(); | ||
| expect(error.message).toMatchSnapshot(); | ||
| } | ||
| }); |
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