| /* |
| * Copyright 2018 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.rendering.box |
| |
| import org.junit.Assert.assertEquals |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| |
| @RunWith(JUnit4::class) |
| class CachedIntrinsicsTest { |
| |
| companion object { |
| private const val DELTA = 0.01f |
| } |
| |
| private class RenderTestBox : RenderBox() { |
| var value: Float = 0.0f |
| |
| fun next(): Float { |
| value += 1.0f; return value; } |
| |
| override fun computeMinIntrinsicWidth(height: Float) = next() |
| override fun computeMaxIntrinsicWidth(height: Float) = next() |
| override fun computeMinIntrinsicHeight(width: Float) = next() |
| override fun computeMaxIntrinsicHeight(width: Float) = next() |
| } |
| |
| @Test |
| fun `Intrinsics cache`() { |
| val test = RenderTestBox() |
| |
| assertEquals(1.0f, test.getMinIntrinsicWidth(0.0f), DELTA) |
| assertEquals(2.0f, test.getMinIntrinsicWidth(100.0f), DELTA) |
| assertEquals(3.0f, test.getMinIntrinsicWidth(200.0f), DELTA) |
| assertEquals(1.0f, test.getMinIntrinsicWidth(0.0f), DELTA) |
| assertEquals(2.0f, test.getMinIntrinsicWidth(100.0f), DELTA) |
| assertEquals(3.0f, test.getMinIntrinsicWidth(200.0f), DELTA) |
| |
| assertEquals(4.0f, test.getMaxIntrinsicWidth(0.0f), DELTA) |
| assertEquals(5.0f, test.getMaxIntrinsicWidth(100.0f), DELTA) |
| assertEquals(6.0f, test.getMaxIntrinsicWidth(200.0f), DELTA) |
| assertEquals(4.0f, test.getMaxIntrinsicWidth(0.0f), DELTA) |
| assertEquals(5.0f, test.getMaxIntrinsicWidth(100.0f), DELTA) |
| assertEquals(6.0f, test.getMaxIntrinsicWidth(200.0f), DELTA) |
| |
| assertEquals(7.0f, test.getMinIntrinsicHeight(0.0f), DELTA) |
| assertEquals(8.0f, test.getMinIntrinsicHeight(100.0f), DELTA) |
| assertEquals(9.0f, test.getMinIntrinsicHeight(200.0f), DELTA) |
| assertEquals(7.0f, test.getMinIntrinsicHeight(0.0f), DELTA) |
| assertEquals(8.0f, test.getMinIntrinsicHeight(100.0f), DELTA) |
| assertEquals(9.0f, test.getMinIntrinsicHeight(200.0f), DELTA) |
| |
| assertEquals(10.0f, test.getMaxIntrinsicHeight(0.0f), DELTA) |
| assertEquals(11.0f, test.getMaxIntrinsicHeight(100.0f), DELTA) |
| assertEquals(12.0f, test.getMaxIntrinsicHeight(200.0f), DELTA) |
| assertEquals(10.0f, test.getMaxIntrinsicHeight(0.0f), DELTA) |
| assertEquals(11.0f, test.getMaxIntrinsicHeight(100.0f), DELTA) |
| assertEquals(12.0f, test.getMaxIntrinsicHeight(200.0f), DELTA) |
| |
| // now read them all again backwards |
| assertEquals(12.0f, test.getMaxIntrinsicHeight(200.0f), DELTA) |
| assertEquals(11.0f, test.getMaxIntrinsicHeight(100.0f), DELTA) |
| assertEquals(10.0f, test.getMaxIntrinsicHeight(0.0f), DELTA) |
| assertEquals(9.0f, test.getMinIntrinsicHeight(200.0f), DELTA) |
| assertEquals(8.0f, test.getMinIntrinsicHeight(100.0f), DELTA) |
| assertEquals(7.0f, test.getMinIntrinsicHeight(0.0f), DELTA) |
| assertEquals(6.0f, test.getMaxIntrinsicWidth(200.0f), DELTA) |
| assertEquals(5.0f, test.getMaxIntrinsicWidth(100.0f), DELTA) |
| assertEquals(4.0f, test.getMaxIntrinsicWidth(0.0f), DELTA) |
| assertEquals(3.0f, test.getMinIntrinsicWidth(200.0f), DELTA) |
| assertEquals(2.0f, test.getMinIntrinsicWidth(100.0f), DELTA) |
| assertEquals(1.0f, test.getMinIntrinsicWidth(0.0f), DELTA) |
| } |
| } |