Add type tests for all expect matchers
#11949
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While I don't mind the combined PR, we could split out the JSDoc changes into its own PR to reduce the diff here to be focused on the type changes? |
Sure. Also will be easier to work on changes. |
mrazauskas
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| @@ -431,7 +431,7 @@ const expectExport = expect as Expect; | |||
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| declare namespace expectExport { | |||
| export type MatcherState = JestMatcherState; | |||
| export interface Matchers<R> extends MatcherInterface<R> {} | |||
| export interface Matchers<R, T> extends MatcherInterface<R, T> {} | |||
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T is consumed in toMatchSnapshot and toMatchInlineSnapshot. Might be useful somewhere else too.
| propertyMatchers: Partial<T>, | ||
| snapshotName?: string, | ||
| ): R; | ||
| toMatchSnapshot(hint?: string): R; |
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Less specific overloads goes first for better errors.
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| expectType<void>(expect(jest.fn()).toBeCalledWith('value')); | ||
| expectType<void>(expect(jest.fn()).toBeCalledWith('value', 123)); | ||
| // expectError(expect(jest.fn()).toBeCalledWith()); |
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All comment out do not work with mlh-tsd at the moment. All is as expected with type checks inside VS Code, but tests fail:
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Codecov Report
@@ Coverage Diff @@
## main #11949 +/- ##
=======================================
Coverage 68.76% 68.76%
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Files 322 322
Lines 16620 16618 -2
Branches 4795 4794 -1
=======================================
- Hits 11429 11428 -1
+ Misses 5159 5158 -1
Partials 32 32
Continue to review full report at Codecov.
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| @@ -182,7 +170,7 @@ export interface Matchers<R> { | |||
| * Ensure that an object is an instance of a class. | |||
| * This matcher uses `instanceof` underneath. | |||
| */ | |||
| toBeInstanceOf(expected: Function): R; | |||
| toBeInstanceOf(expected: unknown): R; | |||
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Somehow unknown here feels like better idea, or?
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I honestly do not understand why it was Function before
since one can pass anything in it I agree with unknown
| toHaveBeenNthCalledWith(nthCall: number, ...args: Array<unknown>): R; | ||
| toHaveBeenNthCalledWith( | ||
| nth: number, | ||
| ...expected: [unknown, ...Array<unknown>] |
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why is ...expected: [unknown, ...Array<unknown>] better than ...expected: unknown[]? isn't it the same?
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it ensures length of array is >= 1 instead of >= 0
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Fixed the above mentioned Waiting for tsdjs/tsd#127 |
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@mrazauskas can we remove (or comment out) the assertions that needs a newer version of |
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Ergh, CI is happy... Can I land this? 😀 |
mrazauskas
changed the title
expect matchersexpect matchers
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Looked through. I think it is good to land. Not at computer right now, can’t add change log |
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This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs. |
Summary
@SimenB As promised, here is an attempt to add type tests for all
expectmatchers.Of course, I was looking through the code while working with typings.
Found one issue with the typings of
<...>CalledWithmatchers. Previous typings allowed to use the matchers without any arguments. I improved these, but strangelymlh-tsdis refusing to understand the errors (expecting an error, getting that error, "but found none"):Test plan
This PR is mainly adding missing tests. All improvements are covered by tests too.