| /* |
| * 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.ui.core |
| |
| import androidx.test.filters.SmallTest |
| import androidx.ui.geometry.Size |
| import org.junit.Assert.assertEquals |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| |
| @SmallTest |
| @RunWith(JUnit4::class) |
| class ContentScaleTest { |
| |
| @Test |
| fun testScaleNone() { |
| val scale = ContentScale.None.scale( |
| srcSize = Size(100.0f, 100.0f), |
| dstSize = Size(200.0f, 200.0f) |
| ) |
| assertEquals(1.0f, scale) |
| } |
| |
| @Test |
| fun testContentScaleFit() { |
| val scale = ContentScale.Fit.scale( |
| srcSize = Size(200.0f, 100.0f), |
| dstSize = Size(100.0f, 200.0f) |
| ) |
| assertEquals(.5f, scale) |
| } |
| |
| @Test |
| fun testContentScaleFillWidth() { |
| val scale = ContentScale.FillWidth.scale( |
| srcSize = Size(400.0f, 100.0f), |
| dstSize = Size(100.0f, 200.0f) |
| ) |
| assertEquals(0.25f, scale) |
| } |
| |
| @Test |
| fun testScaleFillHeight() { |
| val scale = ContentScale.FillHeight.scale( |
| srcSize = Size(400.0f, 100.0f), |
| dstSize = Size(100.0f, 200.0f) |
| ) |
| assertEquals(2.0f, scale) |
| } |
| |
| @Test |
| fun testContentScaleCrop() { |
| val scale = ContentScale.Crop.scale( |
| srcSize = Size(400.0f, 100.0f), |
| dstSize = Size(100.0f, 200.0f) |
| ) |
| assertEquals(2.0f, scale) |
| } |
| |
| @Test |
| fun testContentScaleInside() { |
| val scale = ContentScale.Inside.scale( |
| srcSize = Size(400.0f, 100.0f), |
| dstSize = Size(100.0f, 200.0f) |
| ) |
| assertEquals(0.25f, scale) |
| } |
| |
| @Test |
| fun testContentScaleInsideLargeDst() { |
| // If the src is smaller than the destination, ensure no scaling is done |
| val scale = ContentScale.Inside.scale( |
| srcSize = Size(400.0f, 100.0f), |
| dstSize = Size(900.0f, 200.0f) |
| ) |
| assertEquals(1.0f, scale) |
| } |
| |
| @Test |
| fun testContentFitInsideLargeDst() { |
| val scale = ContentScale.Fit.scale( |
| srcSize = Size(400.0f, 100.0f), |
| dstSize = Size(900.0f, 200.0f) |
| ) |
| assertEquals(2.0f, scale) |
| } |
| |
| @Test |
| fun testContentScaleCropWidth() { |
| val scale = ContentScale.Crop.scale( |
| srcSize = Size(100.0f, 400.0f), |
| dstSize = Size(200.0f, 200.0f) |
| ) |
| assertEquals(2.00f, scale) |
| } |
| |
| @Test |
| fun testContentScaleCropHeight() { |
| val scale = ContentScale.Crop.scale( |
| srcSize = Size(300.0f, 100.0f), |
| dstSize = Size(200.0f, 200.0f) |
| ) |
| assertEquals(2.00f, scale) |
| } |
| } |