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Convert NativeAnimatedInterpolationTest to Kotlin (#37742)
Summary: This PR converts NativeAnimatedInterpolationTest.java to Kotlin as requested in [this issue](#37708). ## Changelog: [INTERNAL] [CHANGED] - Convert NativeAnimatedInterpolationTest to Kotlin Pull Request resolved: #37742 Test Plan: 1. Run `./gradlew :packages:react-native:ReactAndroid:test`. 2. All tests should pass. Reviewed By: cortinico, yungsters Differential Revision: D46499088 Pulled By: mdvacca fbshipit-source-id: 06efb2451760f7e02751b521af8590a6f49236a9
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‎packages/react-native/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedInterpolationTest.java‎

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‎packages/react-native/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedInterpolationTest.kt‎

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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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package com.facebook.react.animated
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import org.assertj.core.api.Assertions.assertThat
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import org.junit.Test
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import org.junit.runner.RunWith
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import org.robolectric.RobolectricTestRunner
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/** Tests method used by [InterpolationAnimatedNode] to interpolate value of the input nodes. */
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@RunWith(RobolectricTestRunner::class)
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class NativeAnimatedInterpolationTest {
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@Test
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fun testSimpleOneToOneMapping() {
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val input = doubleArrayOf(0.0, 1.0)
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val output = doubleArrayOf(0.0, 1.0)
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assertThat(simpleInterpolation(0.0, input, output)).isEqualTo(0.0)
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assertThat(simpleInterpolation(0.5, input, output)).isEqualTo(0.5)
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assertThat(simpleInterpolation(0.8, input, output)).isEqualTo(0.8)
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assertThat(simpleInterpolation(1.0, input, output)).isEqualTo(1.0)
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}
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@Test
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fun testWiderOutputRange() {
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val input = doubleArrayOf(0.0, 1.0)
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val output = doubleArrayOf(100.0, 200.0)
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assertThat(simpleInterpolation(0.0, input, output)).isEqualTo(100.0)
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assertThat(simpleInterpolation(0.5, input, output)).isEqualTo(150.0)
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assertThat(simpleInterpolation(0.8, input, output)).isEqualTo(180.0)
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assertThat(simpleInterpolation(1.0, input, output)).isEqualTo(200.0)
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}
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@Test
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fun testWiderInputRange() {
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val input = doubleArrayOf(2000.0, 3000.0)
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val output = doubleArrayOf(1.0, 2.0)
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assertThat(simpleInterpolation(2000.0, input, output)).isEqualTo(1.0)
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assertThat(simpleInterpolation(2250.0, input, output)).isEqualTo(1.25)
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assertThat(simpleInterpolation(2800.0, input, output)).isEqualTo(1.8)
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assertThat(simpleInterpolation(3000.0, input, output)).isEqualTo(2.0)
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}
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@Test
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fun testManySegments() {
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val input = doubleArrayOf(-1.0, 1.0, 5.0)
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val output = doubleArrayOf(0.0, 10.0, 20.0)
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assertThat(simpleInterpolation(-1.0, input, output)).isEqualTo(0.0)
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assertThat(simpleInterpolation(0.0, input, output)).isEqualTo(5.0)
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assertThat(simpleInterpolation(1.0, input, output)).isEqualTo(10.0)
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assertThat(simpleInterpolation(2.0, input, output)).isEqualTo(12.5)
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assertThat(simpleInterpolation(5.0, input, output)).isEqualTo(20.0)
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}
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@Test
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fun testExtendExtrapolate() {
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val input = doubleArrayOf(10.0, 20.0)
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val output = doubleArrayOf(0.0, 1.0)
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assertThat(simpleInterpolation(30.0, input, output)).isEqualTo(2.0)
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assertThat(simpleInterpolation(5.0, input, output)).isEqualTo(-0.5)
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}
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@Test
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fun testClampExtrapolate() {
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val input = doubleArrayOf(10.0, 20.0)
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val output = doubleArrayOf(0.0, 1.0)
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assertThat(
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InterpolationAnimatedNode.interpolate(
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30.0,
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input,
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output,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_CLAMP,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_CLAMP))
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.isEqualTo(1.0)
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assertThat(
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InterpolationAnimatedNode.interpolate(
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5.0,
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input,
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output,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_CLAMP,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_CLAMP))
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.isEqualTo(0.0)
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}
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@Test
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fun testIdentityExtrapolate() {
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val input = doubleArrayOf(10.0, 20.0)
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val output = doubleArrayOf(0.0, 1.0)
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assertThat(
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InterpolationAnimatedNode.interpolate(
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30.0,
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input,
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output,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY))
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.isEqualTo(30.0)
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assertThat(
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InterpolationAnimatedNode.interpolate(
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5.0,
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input,
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output,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY))
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.isEqualTo(5.0)
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}
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@Test
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fun testInterpolateColor() {
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val input = doubleArrayOf(0.0, 1.0)
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val output = intArrayOf(0xFF000000.toInt(), 0xFFFF0000.toInt())
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assertThat(InterpolationAnimatedNode.interpolateColor(0.0, input, output))
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.isEqualTo(0xFF000000.toInt())
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assertThat(InterpolationAnimatedNode.interpolateColor(0.5, input, output))
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.isEqualTo(0xFF7F0000.toInt())
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}
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@Test
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fun testInterpolateString() {
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val input = doubleArrayOf(0.0, 1.0)
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val output =
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arrayOf(
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doubleArrayOf(20.0, 20.0, 20.0, 80.0, 80.0, 80.0, 80.0, 20.0),
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doubleArrayOf(40.0, 40.0, 33.0, 60.0, 60.0, 60.0, 65.0, 40.0))
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val pattern = "M20,20L20,80L80,80L80,20Z"
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assertThat(
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InterpolationAnimatedNode.interpolateString(
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pattern,
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0.0,
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input,
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output,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY))
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.isEqualTo("M20,20L20,80L80,80L80,20Z")
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assertThat(
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InterpolationAnimatedNode.interpolateString(
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pattern,
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0.5,
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input,
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output,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY))
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.isEqualTo("M30,30L26.5,70L70,70L72.5,30Z")
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}
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private fun simpleInterpolation(value: Double, input: DoubleArray, output: DoubleArray): Double =
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InterpolationAnimatedNode.interpolate(
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value,
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input,
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output,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_EXTEND,
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InterpolationAnimatedNode.EXTRAPOLATE_TYPE_EXTEND)
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}

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