| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| @file:Suppress("Deprecation") |
| |
| package androidx.ui.core.test |
| |
| import android.content.Context |
| import android.graphics.Canvas |
| import android.graphics.Paint |
| import android.graphics.Rect |
| import android.os.Build |
| import android.view.View |
| import android.view.View.MeasureSpec |
| import android.view.ViewGroup |
| import android.view.ViewGroup.LayoutParams.MATCH_PARENT |
| import android.view.ViewGroup.LayoutParams.WRAP_CONTENT |
| import android.widget.FrameLayout |
| import android.widget.LinearLayout |
| import androidx.compose.runtime.Applier |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.ExperimentalComposeApi |
| import androidx.compose.runtime.emit |
| import androidx.compose.runtime.getValue |
| import androidx.compose.runtime.key |
| import androidx.compose.runtime.mutableStateOf |
| import androidx.compose.runtime.remember |
| import androidx.compose.runtime.setValue |
| import androidx.test.espresso.Espresso |
| import androidx.test.espresso.assertion.ViewAssertions.matches |
| import androidx.test.espresso.matcher.ViewMatchers.isDescendantOfA |
| import androidx.test.espresso.matcher.ViewMatchers.withClassName |
| import androidx.test.filters.SdkSuppress |
| import androidx.test.filters.SmallTest |
| import androidx.ui.core.AlignmentLine |
| import androidx.ui.core.AndroidComposeView |
| import androidx.compose.ui.unit.Constraints |
| import androidx.ui.core.ContextAmbient |
| import androidx.ui.core.DensityAmbient |
| import androidx.ui.core.ExperimentalLayoutNodeApi |
| import androidx.ui.core.Layout |
| import androidx.ui.core.LayoutCoordinates |
| import androidx.compose.ui.unit.LayoutDirection |
| import androidx.ui.core.LayoutEmitHelper |
| import androidx.ui.core.LayoutModifier |
| import androidx.ui.core.LayoutNode |
| import androidx.ui.core.Measurable |
| import androidx.ui.core.MeasureScope |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.Owner |
| import androidx.ui.core.Ref |
| import androidx.ui.core.drawLayer |
| import androidx.ui.core.globalPosition |
| import androidx.ui.core.isAttached |
| import androidx.ui.core.onPositioned |
| import androidx.ui.core.setContent |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.ui.graphics.toArgb |
| import androidx.ui.core.testTag |
| import androidx.compose.foundation.Box |
| import androidx.compose.foundation.drawBackground |
| import androidx.ui.framework.test.TestActivity |
| import androidx.compose.ui.geometry.Offset |
| import androidx.compose.foundation.layout.fillMaxSize |
| import androidx.compose.foundation.layout.padding |
| import androidx.compose.foundation.layout.size |
| import androidx.ui.test.android.createAndroidComposeRule |
| import androidx.ui.test.assertIsDisplayed |
| import androidx.ui.test.assertPixels |
| import androidx.ui.test.captureToBitmap |
| import androidx.ui.test.onNodeWithTag |
| import androidx.ui.test.runOnIdle |
| import androidx.ui.test.runOnUiThread |
| import androidx.compose.ui.unit.IntOffset |
| import androidx.compose.ui.unit.IntSize |
| import androidx.compose.ui.unit.dp |
| import androidx.ui.viewinterop.AndroidView |
| import androidx.ui.viewinterop.emitView |
| import junit.framework.TestCase.assertNotNull |
| import org.hamcrest.CoreMatchers.`is` |
| import org.hamcrest.CoreMatchers.allOf |
| import org.hamcrest.CoreMatchers.endsWith |
| import org.hamcrest.CoreMatchers.instanceOf |
| import org.hamcrest.CoreMatchers.not |
| import org.junit.Assert.assertEquals |
| import org.junit.Assert.assertFalse |
| import org.junit.Assert.assertTrue |
| import org.junit.Rule |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| import kotlin.math.roundToInt |
| |
| /** |
| * Testing the support for Android Views in Compose UI. |
| */ |
| @SmallTest |
| @RunWith(JUnit4::class) |
| class AndroidViewCompatTest { |
| @get:Rule |
| val composeTestRule = createAndroidComposeRule<TestActivity>() |
| |
| @Test |
| fun simpleLayoutTest() { |
| val squareRef = Ref<ColoredSquareView>() |
| val squareSize = mutableStateOf(100) |
| var expectedSize = 100 |
| composeTestRule.setContent { |
| Align { |
| Layout( |
| modifier = Modifier.testTag("content"), |
| children = @Composable { |
| |
| emitView(::ColoredSquareView) { |
| it.size = squareSize.value |
| it.ref = squareRef |
| } |
| } |
| ) { measurables, constraints -> |
| assertEquals(1, measurables.size) |
| val placeable = measurables.first().measure( |
| constraints.copy(minWidth = 0, minHeight = 0) |
| ) |
| assertEquals(placeable.width, expectedSize) |
| assertEquals(placeable.height, expectedSize) |
| layout(constraints.maxWidth, constraints.maxHeight) { |
| placeable.place(0, 0) |
| } |
| } |
| } |
| } |
| onNodeWithTag("content").assertIsDisplayed() |
| val squareView = squareRef.value |
| assertNotNull(squareView) |
| Espresso |
| .onView(instanceOf(ColoredSquareView::class.java)) |
| .check(matches(isDescendantOfA(instanceOf(Owner::class.java)))) |
| .check(matches(`is`(squareView))) |
| |
| runOnUiThread { |
| // Change view attribute using recomposition. |
| squareSize.value = 200 |
| expectedSize = 200 |
| } |
| onNodeWithTag("content").assertIsDisplayed() |
| Espresso |
| .onView(instanceOf(ColoredSquareView::class.java)) |
| .check(matches(isDescendantOfA(instanceOf(Owner::class.java)))) |
| .check(matches(`is`(squareView))) |
| |
| runOnUiThread { |
| // Change view attribute using the View reference. |
| squareView!!.size = 300 |
| expectedSize = 300 |
| } |
| onNodeWithTag("content").assertIsDisplayed() |
| Espresso |
| .onView(instanceOf(ColoredSquareView::class.java)) |
| .check(matches(isDescendantOfA(instanceOf(Owner::class.java)))) |
| .check(matches(`is`(squareView))) |
| } |
| |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| @Test |
| fun simpleDrawTest() { |
| val squareRef = Ref<ColoredSquareView>() |
| val colorModel = mutableStateOf(Color.Blue) |
| val squareSize = 100 |
| var expectedColor = Color.Blue |
| composeTestRule.setContent { |
| Align { |
| Container(Modifier.testTag("content").drawLayer()) { |
| emitView(::ColoredSquareView) { |
| it.color = colorModel.value |
| it.ref = squareRef |
| } |
| } |
| } |
| } |
| val squareView = squareRef.value |
| assertNotNull(squareView) |
| Espresso |
| .onView(instanceOf(ColoredSquareView::class.java)) |
| .check(matches(isDescendantOfA(instanceOf(Owner::class.java)))) |
| .check(matches(`is`(squareView))) |
| val expectedPixelColor = { position: IntOffset -> |
| if (position.x < squareSize && position.y < squareSize) { |
| expectedColor |
| } else { |
| Color.White |
| } |
| } |
| onNodeWithTag("content") |
| .assertIsDisplayed() |
| .captureToBitmap() |
| .assertPixels(expectedColorProvider = expectedPixelColor) |
| |
| runOnUiThread { |
| // Change view attribute using recomposition. |
| colorModel.value = Color.Green |
| expectedColor = Color.Green |
| } |
| Espresso |
| .onView(instanceOf(ColoredSquareView::class.java)) |
| .check(matches(isDescendantOfA(instanceOf(Owner::class.java)))) |
| .check(matches(`is`(squareView))) |
| onNodeWithTag("content") |
| .assertIsDisplayed() |
| .captureToBitmap() |
| .assertPixels(expectedColorProvider = expectedPixelColor) |
| |
| runOnUiThread { |
| // Change view attribute using the View reference. |
| colorModel.value = Color.Red |
| expectedColor = Color.Red |
| } |
| Espresso |
| .onView(instanceOf(ColoredSquareView::class.java)) |
| .check(matches(isDescendantOfA(instanceOf(Owner::class.java)))) |
| .check(matches(`is`(squareView))) |
| onNodeWithTag("content") |
| .assertIsDisplayed() |
| .captureToBitmap() |
| .assertPixels(expectedColorProvider = expectedPixelColor) |
| } |
| |
| // When incoming constraints are fixed. |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_1() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(20, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(30, MeasureSpec.EXACTLY), |
| Constraints.fixed(20, 30), |
| ViewGroup.LayoutParams(40, 50) |
| ) |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_2() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(20, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(30, MeasureSpec.EXACTLY), |
| Constraints.fixed(20, 30), |
| ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT) |
| ) |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_3() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(20, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(30, MeasureSpec.EXACTLY), |
| Constraints.fixed(20, 30), |
| ViewGroup.LayoutParams(MATCH_PARENT, MATCH_PARENT) |
| ) |
| } |
| |
| // When incoming constraints are finite. |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_4() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(25, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(35, MeasureSpec.EXACTLY), |
| Constraints( |
| minWidth = 20, maxWidth = 30, minHeight = 35, maxHeight = 45 |
| ), |
| ViewGroup.LayoutParams(25, 35) |
| ) |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_5() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(20, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(35, MeasureSpec.EXACTLY), |
| Constraints( |
| minWidth = 20, maxWidth = 30, minHeight = 35, maxHeight = 45 |
| ), |
| ViewGroup.LayoutParams(15, 25) |
| ) |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_6() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(30, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(45, MeasureSpec.EXACTLY), |
| Constraints( |
| minWidth = 20, maxWidth = 30, minHeight = 35, maxHeight = 45 |
| ), |
| ViewGroup.LayoutParams(35, 50) |
| ) |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_7() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(40, MeasureSpec.AT_MOST), |
| MeasureSpec.makeMeasureSpec(50, MeasureSpec.AT_MOST), |
| Constraints(maxWidth = 40, maxHeight = 50), |
| ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT) |
| ) |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_8() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(40, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(50, MeasureSpec.EXACTLY), |
| Constraints(maxWidth = 40, maxHeight = 50), |
| ViewGroup.LayoutParams(MATCH_PARENT, MATCH_PARENT) |
| ) |
| } |
| |
| // When incoming constraints are infinite. |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_9() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(25, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(35, MeasureSpec.EXACTLY), |
| Constraints(), |
| ViewGroup.LayoutParams(25, 35) |
| ) |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_10() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), |
| MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), |
| Constraints(), |
| ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT) |
| ) |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMeasureSpecs_11() { |
| testMeasurement_isDoneWithCorrectMeasureSpecs( |
| MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), |
| MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), |
| Constraints(), |
| ViewGroup.LayoutParams(MATCH_PARENT, MATCH_PARENT) |
| ) |
| } |
| |
| private fun testMeasurement_isDoneWithCorrectMeasureSpecs( |
| expectedWidthSpec: Int, |
| expectedHeightSpec: Int, |
| constraints: Constraints, |
| layoutParams: ViewGroup.LayoutParams |
| ) { |
| val viewRef = Ref<MeasureSpecSaverView>() |
| val widthMeasureSpecRef = Ref<Int>() |
| val heightMeasureSpecRef = Ref<Int>() |
| // Unique starting constraints so that new constraints are different and thus recomp is |
| // guaranteed. |
| val constraintsHolder = mutableStateOf(Constraints.fixed(1234, 5678)) |
| |
| composeTestRule.setContent { |
| Container(LayoutConstraints(constraintsHolder.value)) { |
| emitView(::MeasureSpecSaverView) { |
| it.ref = viewRef |
| it.widthMeasureSpecRef = widthMeasureSpecRef |
| it.heightMeasureSpecRef = heightMeasureSpecRef |
| } |
| } |
| } |
| |
| runOnUiThread { |
| constraintsHolder.value = constraints |
| viewRef.value?.layoutParams = layoutParams |
| } |
| |
| runOnIdle { |
| assertEquals(expectedWidthSpec, widthMeasureSpecRef.value) |
| assertEquals(expectedHeightSpec, heightMeasureSpecRef.value) |
| } |
| } |
| |
| @Test |
| fun testMeasurement_isDoneWithCorrectMinimumDimensionsSetOnView() { |
| val viewRef = Ref<MeasureSpecSaverView>() |
| val constraintsHolder = mutableStateOf(Constraints()) |
| composeTestRule.setContent { |
| Container(LayoutConstraints(constraintsHolder.value)) { |
| emitView(::MeasureSpecSaverView) { it.ref = viewRef } |
| } |
| } |
| runOnUiThread { |
| constraintsHolder.value = Constraints(minWidth = 20, minHeight = 30) |
| } |
| |
| runOnIdle { |
| assertEquals(20, viewRef.value!!.minimumWidth) |
| assertEquals(30, viewRef.value!!.minimumHeight) |
| } |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testRedrawing_onSubsequentRemeasuring() { |
| var size by mutableStateOf(20) |
| composeTestRule.setContent { |
| Box(Modifier.drawLayer().fillMaxSize()) { |
| val context = ContextAmbient.current |
| val view = remember { View(context) } |
| AndroidView({ view }, Modifier.testTag("view")) |
| view.layoutParams = ViewGroup.LayoutParams(size, size) |
| view.setBackgroundColor(android.graphics.Color.BLUE) |
| } |
| } |
| onNodeWithTag("view").captureToBitmap().assertPixels(IntSize(size, size)) { Color.Blue } |
| |
| runOnIdle { size += 20 } |
| onNodeWithTag("view").captureToBitmap().assertPixels(IntSize(size, size)) { Color.Blue } |
| |
| runOnIdle { size += 20 } |
| onNodeWithTag("view").captureToBitmap().assertPixels(IntSize(size, size)) { Color.Blue } |
| } |
| |
| @Test |
| fun testCoordinates_acrossMultipleViewAndComposeSwitches() { |
| val padding = 100 |
| |
| lateinit var outer: Offset |
| lateinit var inner: Offset |
| |
| composeTestRule.setContent { |
| Box(Modifier.onPositioned { outer = it.globalPosition }) { |
| val paddingDp = with(DensityAmbient.current) { padding.toDp() } |
| Box(Modifier.padding(paddingDp)) { |
| emitView(::FrameLayout) { |
| it.setContent { |
| Box(Modifier.padding(paddingDp) |
| .onPositioned { inner = it.globalPosition }) |
| } |
| } |
| } |
| } |
| } |
| |
| runOnIdle { |
| assertEquals(outer.x + padding * 2, inner.x) |
| assertEquals(outer.y + padding * 2, inner.y) |
| } |
| } |
| |
| @Test |
| fun testCoordinates_acrossMultipleViewAndComposeSwitches_whenContainerMoves() { |
| val size = 100 |
| val padding = 100 |
| |
| lateinit var topView: View |
| lateinit var coordinates: LayoutCoordinates |
| var startX = 0 |
| |
| composeTestRule.activityRule.scenario.onActivity { |
| val root = LinearLayout(it) |
| it.setContentView(root) |
| |
| topView = View(it) |
| root.addView(topView, size, size) |
| val frameLayout = FrameLayout(it) |
| root.addView(frameLayout) |
| |
| frameLayout.setContent { |
| Box { |
| val paddingDp = with(DensityAmbient.current) { padding.toDp() } |
| Box(Modifier.padding(paddingDp)) { |
| emitView(::FrameLayout) { |
| it.setContent { |
| Box(Modifier.padding(paddingDp).onPositioned { coordinates = it }) |
| } |
| } |
| } |
| } |
| } |
| } |
| runOnIdle { startX = coordinates.globalPosition.x.roundToInt() } |
| |
| runOnIdle { topView.visibility = View.GONE } |
| |
| runOnIdle { |
| assertEquals(100, startX - coordinates.globalPosition.x.roundToInt()) |
| } |
| } |
| |
| @Test |
| fun testComposeInsideView_simpleLayout() { |
| val padding = 10f |
| val paddingDp = with(composeTestRule.density) { padding.toDp() } |
| val size = 20f |
| val sizeDp = with(composeTestRule.density) { size.toDp() } |
| |
| lateinit var outer: Offset |
| lateinit var inner1: Offset |
| lateinit var inner2: Offset |
| composeTestRule.setContent { |
| Box(Modifier.onPositioned { outer = it.globalPosition }) { |
| Box(paddingStart = paddingDp, paddingTop = paddingDp) { |
| emitView(::LinearLayout, {}) { |
| Box(Modifier.size(sizeDp).drawBackground(Color.Blue).onPositioned { |
| inner1 = it.globalPosition |
| }) |
| Box(Modifier.size(sizeDp).drawBackground(Color.Gray).onPositioned { |
| inner2 = it.globalPosition |
| }) |
| } |
| } |
| } |
| } |
| |
| runOnIdle { |
| assertEquals(Offset(padding, padding), inner1 - outer) |
| assertEquals(Offset(padding + size, padding), inner2 - outer) |
| } |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testComposeInsideView_simpleDraw() { |
| val padding = 10f |
| val paddingDp = with(composeTestRule.density) { padding.toDp() } |
| val size = 20f |
| val sizeDp = with(composeTestRule.density) { size.toDp() } |
| |
| composeTestRule.setContent { |
| Box(Modifier.testTag("box")) { |
| Box(padding = paddingDp, backgroundColor = Color.Blue) { |
| emitView(::LinearLayout, {}) { |
| Box(Modifier.size(sizeDp).drawBackground(Color.White)) |
| Box(Modifier.size(sizeDp).drawBackground(Color.Gray)) |
| } |
| } |
| } |
| } |
| |
| onNodeWithTag("box").captureToBitmap().assertPixels( |
| IntSize((padding * 2 + size * 2).roundToInt(), (padding * 2 + size).roundToInt()) |
| ) { offset -> |
| if (offset.y < padding || offset.y >= padding + size || offset.x < padding || |
| offset.x >= padding + size * 2) { |
| Color.Blue |
| } else if (offset.x >= padding && offset.x < padding + size) { |
| Color.White |
| } else { |
| Color.Gray |
| } |
| } |
| } |
| |
| @Test |
| @OptIn(ExperimentalLayoutNodeApi::class, ExperimentalComposeApi::class) |
| fun testComposeInsideView_attachingAndDetaching() { |
| var composeContent by mutableStateOf(true) |
| var node: LayoutNode? = null |
| composeTestRule.setContent { |
| if (composeContent) { |
| Box { |
| emitView(::LinearLayout, {}) { |
| emit<LayoutNode, Applier<Any>>( |
| ctor = LayoutEmitHelper.constructor, |
| update = { |
| node = this.node |
| set(noOpMeasureBlocks, LayoutEmitHelper.setMeasureBlocks) |
| } |
| ) |
| } |
| } |
| } |
| } |
| |
| Espresso.onView( |
| allOf( |
| withClassName(endsWith("AndroidComposeView")), |
| not(isDescendantOfA(withClassName(endsWith("AndroidComposeView")))) |
| ) |
| ).check { view, exception -> |
| view as AndroidComposeView |
| // The root layout node should have one child, the Box. |
| if (view.root.children.size != 1) throw exception |
| } |
| var innerAndroidComposeView: AndroidComposeView? = null |
| Espresso.onView( |
| allOf( |
| withClassName(endsWith("AndroidComposeView")), |
| isDescendantOfA(withClassName(endsWith("AndroidComposeView"))) |
| ) |
| ).check { view, exception -> |
| innerAndroidComposeView = view as AndroidComposeView |
| // It should have one layout node child, the inner emitted LayoutNode. |
| if (view.root.children.size != 1) throw exception |
| } |
| // The layout node and its AndroidComposeView should be attached. |
| assertNotNull(innerAndroidComposeView) |
| assertTrue(innerAndroidComposeView!!.isAttachedToWindow) |
| assertNotNull(node) |
| assertTrue(node!!.isAttached()) |
| |
| runOnIdle { composeContent = false } |
| |
| // The composition has been disposed. |
| runOnIdle { |
| assertFalse(innerAndroidComposeView!!.isAttachedToWindow) |
| assertFalse(node!!.isAttached()) |
| } |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testComposeInsideView_remove() { |
| val size = 40.dp |
| val sizePx = with(composeTestRule.density) { size.toIntPx() } |
| |
| var first by mutableStateOf(true) |
| composeTestRule.setContent { |
| Box(Modifier.testTag("view")) { |
| emitView(::LinearLayout, {}) { |
| if (first) { |
| Box(Modifier.size(size), backgroundColor = Color.Green) |
| } else { |
| Box(Modifier.size(size), backgroundColor = Color.Blue) |
| } |
| } |
| } |
| } |
| |
| onNodeWithTag("view") |
| .captureToBitmap().assertPixels(IntSize(sizePx, sizePx)) { Color.Green } |
| |
| runOnIdle { first = false } |
| |
| onNodeWithTag("view") |
| .captureToBitmap().assertPixels(IntSize(sizePx, sizePx)) { Color.Blue } |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testComposeInsideView_move() { |
| val size = 40.dp |
| val sizePx = with(composeTestRule.density) { size.toIntPx() } |
| |
| var first by mutableStateOf(true) |
| composeTestRule.setContent { |
| Box(Modifier.testTag("view")) { |
| emitView(::LinearLayout, {}) { |
| if (first) { |
| key("green") { |
| Box(Modifier.size(size), backgroundColor = Color.Green) |
| } |
| key("blue") { |
| Box(Modifier.size(size), backgroundColor = Color.Blue) |
| } |
| } else { |
| key("blue") { |
| Box(Modifier.size(size), backgroundColor = Color.Blue) |
| } |
| key("green") { |
| Box(Modifier.size(size), backgroundColor = Color.Green) |
| } |
| } |
| } |
| } |
| } |
| |
| onNodeWithTag("view").captureToBitmap() |
| .assertPixels(IntSize(sizePx * 2, sizePx)) { |
| if (it.x < sizePx) Color.Green else Color.Blue |
| } |
| |
| runOnIdle { first = false } |
| |
| onNodeWithTag("view").captureToBitmap() |
| .assertPixels(IntSize(sizePx * 2, sizePx)) { |
| if (it.x < sizePx) Color.Blue else Color.Green |
| } |
| } |
| |
| class ColoredSquareView(context: Context) : View(context) { |
| var size: Int = 100 |
| set(value) { |
| if (value != field) { |
| field = value |
| requestLayout() |
| } |
| } |
| |
| var color: Color = Color.Blue |
| set(value) { |
| if (value != field) { |
| field = value |
| invalidate() |
| } |
| } |
| |
| var ref: Ref<ColoredSquareView>? = null |
| set(value) { |
| field = value |
| value?.value = this |
| } |
| |
| override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) { |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec) |
| setMeasuredDimension(size, size) |
| } |
| |
| override fun draw(canvas: Canvas?) { |
| super.draw(canvas) |
| canvas!!.drawRect( |
| Rect(0, 0, size, size), |
| Paint().apply { color = this@ColoredSquareView.color.toArgb() } |
| ) |
| } |
| } |
| |
| class MeasureSpecSaverView(context: Context) : View(context) { |
| var ref: Ref<MeasureSpecSaverView>? = null |
| set(value) { |
| field = value |
| value?.value = this |
| } |
| var widthMeasureSpecRef: Ref<Int>? = null |
| var heightMeasureSpecRef: Ref<Int>? = null |
| |
| override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) { |
| widthMeasureSpecRef?.value = widthMeasureSpec |
| heightMeasureSpecRef?.value = heightMeasureSpec |
| setMeasuredDimension(0, 0) |
| } |
| } |
| |
| fun LayoutConstraints(childConstraints: Constraints) = object : LayoutModifier { |
| override fun MeasureScope.measure( |
| measurable: Measurable, |
| constraints: Constraints, |
| layoutDirection: LayoutDirection |
| ): MeasureScope.MeasureResult { |
| val placeable = measurable.measure(childConstraints) |
| return layout(placeable.width, placeable.height) { |
| placeable.place(0, 0) |
| } |
| } |
| } |
| |
| @Composable |
| fun Container( |
| modifier: Modifier = Modifier, |
| children: @Composable () -> Unit |
| ) { |
| Layout(children, modifier) { measurables, constraints -> |
| val placeable = measurables[0].measure(constraints) |
| layout(placeable.width, placeable.height) { |
| placeable.place(0, 0) |
| } |
| } |
| } |
| |
| @OptIn(ExperimentalLayoutNodeApi::class) |
| private val noOpMeasureBlocks = object : LayoutNode.NoIntrinsicsMeasureBlocks("") { |
| override fun measure( |
| measureScope: MeasureScope, |
| measurables: List<Measurable>, |
| constraints: Constraints, |
| layoutDirection: LayoutDirection |
| ): MeasureScope.MeasureResult { |
| return object : MeasureScope.MeasureResult { |
| override val width = 0 |
| override val height = 0 |
| override val alignmentLines: Map<AlignmentLine, Int> get() = mapOf() |
| override fun placeChildren(layoutDirection: LayoutDirection) {} |
| } |
| } |
| } |
| } |