| /* |
| * 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. |
| */ |
| |
| package androidx.ui.test |
| |
| import androidx.compose.Composable |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.semantics.semantics |
| import androidx.ui.core.testTag |
| import androidx.compose.foundation.Box |
| import androidx.compose.foundation.Canvas |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.foundation.layout.Column |
| import androidx.compose.foundation.layout.preferredSize |
| import androidx.ui.semantics.scrollBy |
| import androidx.ui.unit.dp |
| import com.google.common.truth.Truth |
| import org.junit.Assert |
| import org.junit.Rule |
| import org.junit.Test |
| |
| class ScrollToTest { |
| @get:Rule |
| val composeTestRule = createComposeRule(disableTransitions = true) |
| |
| @Test |
| fun checkSemanticsAction_scrollTo_isCalled() { |
| var wasScrollToCalled = false |
| val tag = "myTag" |
| |
| composeTestRule.setContent { |
| Box(Modifier.semantics { |
| scrollBy(action = { _, _ -> |
| wasScrollToCalled = true |
| return@scrollBy true |
| }) |
| }) { |
| Box(Modifier.testTag(tag)) |
| } |
| } |
| |
| runOnIdle { |
| Assert.assertTrue(!wasScrollToCalled) |
| } |
| |
| onNodeWithTag(tag) |
| .performScrollTo() |
| |
| runOnIdle { |
| Assert.assertTrue(wasScrollToCalled) |
| } |
| } |
| |
| @Test |
| fun checkSemanticsAction_scrollTo_coordAreCorrect() { |
| var currentScrollPositionY = 0.0f |
| var currentScrollPositionX = 0.0f |
| var elementHeight = 0.0f |
| val tag = "myTag" |
| |
| val drawRect = @Composable { modifier: Modifier, color: Color -> |
| Canvas(modifier.preferredSize(100.dp)) { |
| drawRect(color) |
| |
| elementHeight = size.height |
| } |
| } |
| |
| composeTestRule.setContent { |
| val red = Color(alpha = 0xFF, red = 0xFF, green = 0, blue = 0) |
| val blue = Color(alpha = 0xFF, red = 0, green = 0, blue = 0xFF) |
| val green = Color(alpha = 0xFF, red = 0, green = 0xFF, blue = 0) |
| |
| Box(Modifier.semantics { |
| scrollBy(action = { x, y -> |
| currentScrollPositionY += y |
| currentScrollPositionX += x |
| return@scrollBy true |
| }) |
| }) { |
| Column { |
| drawRect(Modifier, red) |
| drawRect(Modifier, blue) |
| drawRect(Modifier.testTag(tag), green) |
| } |
| } |
| } |
| |
| runOnIdle { |
| Truth.assertThat(currentScrollPositionY).isEqualTo(0.0f) |
| Truth.assertThat(currentScrollPositionX).isEqualTo(0.0f) |
| } |
| |
| onNodeWithTag(tag) |
| .performScrollTo() // scroll to third element |
| |
| runOnIdle { |
| val expected = elementHeight * 2 |
| Truth.assertThat(currentScrollPositionY).isEqualTo(expected) |
| Truth.assertThat(currentScrollPositionX).isEqualTo(0.0f) |
| } |
| } |
| } |