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docs: fix wrong link of tick() (#35168) 

PR Close #35168
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JiaLiPassion 2020-02-06 00:42:46 +09:00 committed by Misko Hevery
parent dcff6c9940
commit dc5ac88a19
1 changed files with 10 additions and 10 deletions
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aio/content/guide/testing.md
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@ -1261,19 +1261,19 @@ XHR calls within a test are rare, but if you need to call XHR, see [`async()`](#
#### The _tick()_ function
You do have to call `tick()` to advance the (virtual) clock.
You do have to call [tick()](api/core/testing/tick) to advance the (virtual) clock.
Calling `tick()` simulates the passage of time until all pending asynchronous activities finish.
Calling [tick()](api/core/testing/tick) simulates the passage of time until all pending asynchronous activities finish.
In this case, it waits for the error handler's `setTimeout()`.
The `tick()` function accepts milliseconds as a parameter (defaults to 0 if not provided). The parameter represents how much the virtual clock advances. For example, if you have a `setTimeout(fn, 100)` in a `fakeAsync()` test, you need to use tick(100) to trigger the fn callback.
The [tick()](api/core/testing/tick) function accepts milliseconds as a parameter (defaults to 0 if not provided). The parameter represents how much the virtual clock advances. For example, if you have a `setTimeout(fn, 100)` in a `fakeAsync()` test, you need to use tick(100) to trigger the fn callback.
<code-example
path="testing/src/app/demo/async-helper.spec.ts"
region="fake-async-test-tick">
</code-example>
The `tick()` function is one of the Angular testing utilities that you import with `TestBed`.
The [tick()](api/core/testing/tick) function is one of the Angular testing utilities that you import with `TestBed`.
It's a companion to `fakeAsync()` and you can only call it within a `fakeAsync()` body.
#### Comparing dates inside fakeAsync()
@ -1422,7 +1422,7 @@ in the real world.
Notice that the quote element displays the placeholder value (`'...'`) after `ngOnInit()`.
The first quote hasn't arrived yet.
To flush the first quote from the observable, you call `tick()`.
To flush the first quote from the observable, you call [tick()](api/core/testing/tick).
Then call `detectChanges()` to tell Angular to update the screen.
Then you can assert that the quote element displays the expected text.
@ -1468,7 +1468,7 @@ When using an `intervalTimer()` such as `setInterval()` in `async()`, remember t
#### _whenStable_
The test must wait for the `getQuote()` observable to emit the next quote.
Instead of calling `tick()`, it calls `fixture.whenStable()`.
Instead of calling [tick()](api/core/testing/tick), it calls `fixture.whenStable()`.
The `fixture.whenStable()` returns a promise that resolves when the JavaScript engine's
task queue becomes empty.
@ -1577,7 +1577,7 @@ you tell the `TestScheduler` to _flush_ its queue of prepared tasks like this.
path="testing/src/app/twain/twain.component.marbles.spec.ts"
region="test-scheduler-flush"></code-example>
This step serves a purpose analogous to `tick()` and `whenStable()` in the
This step serves a purpose analogous to [tick()](api/core/testing/tick) and `whenStable()` in the
earlier `fakeAsync()` and `async()` examples.
The balance of the test is the same as those examples.
@ -1589,7 +1589,7 @@ Here's the marble testing version of the `getQuote()` error test.
path="testing/src/app/twain/twain.component.marbles.spec.ts"
region="error-test"></code-example>
It's still an async test, calling `fakeAsync()` and `tick()`, because the component itself
It's still an async test, calling `fakeAsync()` and [tick()](api/core/testing/tick), because the component itself
calls `setTimeout()` when processing errors.
Look at the marble observable definition.