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Fixed stack animation not updating to new child component instance wh…
…en active configuration is unchanged
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121 changes: 121 additions & 0 deletions
121
...ov/decompose/extensions/compose/experimental/stack/animation/DefaultStackAnimationTest.kt
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package com.arkivanov.decompose.extensions.compose.experimental.stack.animation | ||
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import androidx.compose.runtime.LaunchedEffect | ||
import androidx.compose.runtime.getValue | ||
import androidx.compose.runtime.mutableStateOf | ||
import androidx.compose.runtime.setValue | ||
import androidx.compose.ui.Modifier | ||
import androidx.compose.ui.test.MainTestClock | ||
import androidx.compose.ui.test.junit4.createComposeRule | ||
import com.arkivanov.decompose.Child | ||
import com.arkivanov.decompose.extensions.compose.experimental.animateFloat | ||
import com.arkivanov.decompose.extensions.compose.experimental.takeSorted | ||
import com.arkivanov.decompose.router.stack.ChildStack | ||
import org.junit.Rule | ||
import kotlin.test.Test | ||
import kotlin.test.assertEquals | ||
import kotlin.test.assertTrue | ||
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@Suppress("TestFunctionName") | ||
class DefaultStackAnimationTest { | ||
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@get:Rule | ||
val composeRule = createComposeRule() | ||
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@Test | ||
fun WHEN_animating_push_and_stack_popped_during_animation_THEN_animated_push_and_pop_fully() { | ||
val anim = | ||
DefaultStackAnimation<Int, Any>( | ||
disableInputDuringAnimation = true, | ||
predictiveBackParams = { null }, | ||
selector = { _, _, _ -> null }, | ||
) | ||
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var stack by mutableStateOf(stack(1)) | ||
val values1 = ArrayList<Pair<Long, Float>>() | ||
val values2 = ArrayList<Pair<Long, Float>>() | ||
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composeRule.setContent { | ||
anim(stack = stack, modifier = Modifier) { | ||
val value by transition.animateFloat(durationMillis = 1000) | ||
val pair = composeRule.mainClock.currentTime to value | ||
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when (it.key) { | ||
1 -> values1 += pair | ||
2 -> values2 += pair | ||
} | ||
} | ||
} | ||
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stack = stack(1, 2) | ||
composeRule.mainClock.advanceFramesBy(millis = 500L) | ||
stack = stack(1) | ||
composeRule.waitForIdle() | ||
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val v11 = values1.takeSorted(compareByDescending { it.second }) | ||
val v21 = values2.takeSorted(compareBy { it.second }) | ||
assertTrue(v11.size > 10) | ||
assertTrue(v21.size > 10) | ||
assertEquals(1F, v11.first().second) | ||
assertEquals(0F, v11.last().second) | ||
assertEquals(0F, v21.first().second) | ||
assertEquals(1F, v21.last().second) | ||
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val v12 = values1.drop(v11.size - 1).takeSorted(compareBy { it.second }) | ||
val v22 = values2.drop(v21.size - 1).takeSorted(compareByDescending { it.second }) | ||
assertTrue(v12.size > 10) | ||
assertTrue(v22.size > 10) | ||
assertEquals(0F, v12.first().second) | ||
assertEquals(1F, v12.last().second) | ||
assertEquals(1F, v22.first().second) | ||
assertEquals(0F, v22.last().second) | ||
} | ||
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@Test | ||
fun WHEN_animating_push_and_stack_popped_during_animation_THEN_first_child_restarted() { | ||
val anim = | ||
DefaultStackAnimation<Int, Any>( | ||
disableInputDuringAnimation = true, | ||
predictiveBackParams = { null }, | ||
selector = { _, _, _ -> null }, | ||
) | ||
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var stack by mutableStateOf(stack(1)) | ||
var counter = 0 | ||
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composeRule.setContent { | ||
anim(stack = stack, modifier = Modifier) { | ||
transition.animateFloat(durationMillis = 1000) | ||
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if (it.key == 1) { | ||
LaunchedEffect(Unit) { | ||
counter++ | ||
} | ||
} | ||
} | ||
} | ||
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stack = stack(1, 2) | ||
composeRule.mainClock.advanceFramesBy(millis = 500L) | ||
stack = stack(1) | ||
composeRule.waitForIdle() | ||
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assertEquals(2, counter) | ||
} | ||
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private fun MainTestClock.advanceFramesBy(millis: Long) { | ||
val endTime = currentTime + millis | ||
while (currentTime < endTime) { | ||
advanceTimeByFrame() | ||
} | ||
} | ||
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private fun child(config: Int): Child.Created<Int, Any> = | ||
Child.Created(configuration = config, instance = Any()) | ||
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private fun stack(vararg stack: Int): ChildStack<Int, Any> = | ||
ChildStack( | ||
active = child(stack.last()), | ||
backStack = stack.dropLast(1).map(::child), | ||
) | ||
} |
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11 changes: 11 additions & 0 deletions
11
extensions-compose/src/commonTest/kotlin/com/arkivanov/decompose/extensions/compose/Utils.kt
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package com.arkivanov.decompose.extensions.compose | ||
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internal fun <T> List<T>.takeSorted(comparator: Comparator<T>): List<T> = | ||
takeWhileIndexed { index, item -> | ||
(index == 0) || (comparator.compare(item, get(index - 1)) >= 0) | ||
} | ||
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internal fun <T> Iterable<T>.takeWhileIndexed(predicate: (Int, T) -> Boolean): List<T> = | ||
withIndex() | ||
.takeWhile { (index, item) -> predicate(index, item) } | ||
.map { it.value } |
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