You can use delay Long to delay a certain time If I remember kotlinlang #compose

You can use delay(Long) to delay a certain time. If I remember correctly, delay(Long) will cause other coroutines to immediately act like there was a delay.

oianmol

08/02/2022, 2:47 PM

https://github.com/androidx/androidx/blob/aee0ae1500d74494bcf50a6da3c75b587462e737[…]dAndroidTest/kotlin/androidx/compose/animation/CrossfadeTest.kt

this should help

rule.mainClock.advanceTimeBy(DefaultDurationMillis.toLong())

can you use advanceTimeBy to test this ? 🤔

Landry Norris

08/02/2022, 2:48 PM

That looks cool. I didn’t know about rule.mainClock

oianmol

08/02/2022, 2:49 PM

Let me know if that worked for you!

ziv kesten

08/02/2022, 2:49 PM

mainClock.autoAdvance = false

failes the test

But

delay

worked

However, the test would be long (number of secondes i wait in delay)

Landry Norris

08/02/2022, 2:50 PM

after setting autoAdvance to false, did you use advanceTimeBy?

ziv kesten

08/02/2022, 2:51 PM

Yes, the test failed faster 🥲

java.lang.AssertionError: Failed to assert the following: (Text + EditableText contains 'IN PROGRESS' (ignoreCase: false))
Semantics of the node:
Node #66 at (l=605.0, t=107.0, r=1033.0, b=258.0)px, Tag: 'test_button'
Role = 'Button'
Focused = 'false'
Text = '[CONNECT]'
Actions = [OnClick, GetTextLayoutResult]
MergeDescendants = 'true'
Has 11 siblings
Selector used: ((TestTag = 'test_button')[0])

Landry Norris

08/02/2022, 2:52 PM

If you use runTest {} instead of run blocking, delay will signal other coroutines, but not actually delay.

ziv kesten

08/02/2022, 2:53 PM

I have to use runBlocking because i need a couroutine scope to test with.

The button uses a coroutine scope internally

Landry Norris

08/02/2022, 2:53 PM

runBlockingTest?

ziv kesten

08/02/2022, 2:54 PM

Trying

Landry Norris

08/02/2022, 2:54 PM

runTest should provide a coroutine scope.

https://kotlinlang.org/api/kotlinx.coroutines/kotlinx-coroutines-test/kotlinx.coroutines.test/run-test.html

ziv kesten

08/02/2022, 2:55 PM

runBlockingTest

worked!!!

Thank you!!

Stylianos Gakis

08/02/2022, 9:30 PM

Wait where does

runBlockingTest

come from?

Landry Norris

08/02/2022, 9:31 PM

It’s in the coroutines test package. They do recommend replacing it with runTest where possible.

Stylianos Gakis

08/02/2022, 9:38 PM

Aha alright, that's the old API then I guess, I thought maybe it was coming from somewhere else.

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