| /* |
| * Copyright 2019 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. |
| */ |
| |
| package androidx.compose.foundation.layout |
| |
| import androidx.test.filters.MediumTest |
| import androidx.ui.core.LayoutCoordinates |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.onPositioned |
| import androidx.ui.unit.IntSize |
| import androidx.ui.unit.dp |
| import com.google.common.truth.Truth |
| import org.junit.Assert.assertTrue |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| import java.util.concurrent.CountDownLatch |
| import java.util.concurrent.TimeUnit |
| |
| @MediumTest |
| @RunWith(JUnit4::class) |
| class SpacerTest : LayoutTest() { |
| |
| private val bigConstraints = DpConstraints( |
| maxWidth = 5000.dp, |
| maxHeight = 5000.dp |
| ) |
| |
| @Test |
| fun fixedSpacer_Sizes() { |
| var size: IntSize? = null |
| val width = 40.dp |
| val height = 71.dp |
| |
| val drawLatch = CountDownLatch(1) |
| show { |
| Container(constraints = bigConstraints) { |
| Spacer( |
| Modifier.preferredSize(width = width, height = height) |
| .onPositioned { position: LayoutCoordinates -> |
| size = position.size |
| drawLatch.countDown() |
| } |
| ) |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| with(density) { |
| Truth.assertThat(size?.height).isEqualTo(height.toIntPx()) |
| Truth.assertThat(size?.width).isEqualTo(width.toIntPx()) |
| } |
| } |
| |
| @Test |
| fun fixedSpacer_Sizes_WithSmallerContainer() { |
| var size: IntSize? = null |
| val width = 40.dp |
| val height = 71.dp |
| |
| val drawLatch = CountDownLatch(1) |
| val containerWidth = 5.dp |
| val containerHeight = 7.dp |
| show { |
| Stack { |
| Container( |
| constraints = DpConstraints( |
| maxWidth = containerWidth, |
| maxHeight = containerHeight |
| ) |
| ) { |
| Spacer( |
| Modifier.preferredSize(width = width, height = height) |
| .onPositioned { position: LayoutCoordinates -> |
| size = position.size |
| drawLatch.countDown() |
| } |
| ) |
| } |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| with(density) { |
| Truth.assertThat(size?.height).isEqualTo(containerHeight.toIntPx()) |
| Truth.assertThat(size?.width).isEqualTo(containerWidth.toIntPx()) |
| } |
| } |
| |
| @Test |
| fun widthSpacer_Sizes() { |
| var size: IntSize? = null |
| val width = 71.dp |
| |
| val drawLatch = CountDownLatch(1) |
| show { |
| Container(constraints = bigConstraints) { |
| Spacer(Modifier.preferredWidth(width).onPositioned { position: LayoutCoordinates -> |
| size = position.size |
| drawLatch.countDown() |
| }) |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| with(density) { |
| Truth.assertThat(size?.height).isEqualTo(0) |
| Truth.assertThat(size?.width).isEqualTo(width.toIntPx()) |
| } |
| } |
| |
| @Test |
| fun widthSpacer_Sizes_WithSmallerContainer() { |
| var size: IntSize? = null |
| val width = 40.dp |
| |
| val drawLatch = CountDownLatch(1) |
| val containerWidth = 5.dp |
| val containerHeight = 7.dp |
| show { |
| Stack { |
| Container( |
| constraints = DpConstraints( |
| maxWidth = containerWidth, |
| maxHeight = containerHeight |
| ) |
| ) { |
| Spacer(Modifier.preferredWidth(width) |
| .onPositioned { position: LayoutCoordinates -> |
| size = position.size |
| drawLatch.countDown() |
| }) |
| } |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| with(density) { |
| Truth.assertThat(size?.height).isEqualTo(0) |
| Truth.assertThat(size?.width).isEqualTo(containerWidth.toIntPx()) |
| } |
| } |
| |
| @Test |
| fun heightSpacer_Sizes() { |
| var size: IntSize? = null |
| val height = 7.dp |
| |
| val drawLatch = CountDownLatch(1) |
| show { |
| Container(constraints = bigConstraints) { |
| Spacer(Modifier.preferredHeight(height) |
| .onPositioned { position: LayoutCoordinates -> |
| size = position.size |
| drawLatch.countDown() |
| }) |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| with(density) { |
| Truth.assertThat(size?.height).isEqualTo(height.toIntPx()) |
| Truth.assertThat(size?.width).isEqualTo(0) |
| } |
| } |
| |
| @Test |
| fun heightSpacer_Sizes_WithSmallerContainer() { |
| var size: IntSize? = null |
| val height = 23.dp |
| |
| val drawLatch = CountDownLatch(1) |
| val containerWidth = 5.dp |
| val containerHeight = 7.dp |
| show { |
| Stack { |
| Container( |
| constraints = DpConstraints( |
| maxWidth = containerWidth, |
| maxHeight = containerHeight |
| ) |
| ) { |
| Spacer(Modifier.preferredHeight(height) |
| .onPositioned { position: LayoutCoordinates -> |
| size = position.size |
| drawLatch.countDown() |
| }) |
| } |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| with(density) { |
| Truth.assertThat(size?.height).isEqualTo(containerHeight.toIntPx()) |
| Truth.assertThat(size?.width).isEqualTo(0) |
| } |
| } |
| } |