mirror of
https://github.com/Facepunch/sbox-public.git
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d95169d8fa
* Move all unit tests to Engine/Tests * Fix Margin.EdgeSubtract * Fix Capsule.Contains * EnvironmentVariables.Remove if it's null * Fixed ray trace never returning startedsolid * Fix HistoryList.Navigate on empty list * Fix GameObject.WorldPosition accepting NaNs * Fix flex: initial expanding to the wrong grow/shrink * Translation.TryConvert shouldn't throw on invalid enum strings * Skip sound file tests on machines with no audio device
129 lines
3.5 KiB
C#
129 lines
3.5 KiB
C#
using Sandbox.Utility;
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namespace MathTests;
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[TestClass]
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public class EasingTest
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{
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[TestMethod]
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public void CubicBezierEndpoints()
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{
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var f = Easing.CubicBezier( 0.16f, 1f, 0.3f, 1f );
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Assert.AreEqual( 0f, f( 0f ) );
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Assert.AreEqual( 1f, f( 1f ) );
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// out of range clamps to 0/1
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Assert.AreEqual( 0f, f( -0.5f ) );
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Assert.AreEqual( 1f, f( 1.5f ) );
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}
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[TestMethod]
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public void CubicBezierLinear()
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{
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// (0,0, 1,1) is the linear identity curve
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var f = Easing.CubicBezier( 0f, 0f, 1f, 1f );
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Assert.AreEqual( 0.25f, f( 0.25f ), 0.001f );
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Assert.AreEqual( 0.5f, f( 0.5f ), 0.001f );
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Assert.AreEqual( 0.75f, f( 0.75f ), 0.001f );
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}
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[TestMethod]
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public void CubicBezierSymmetric()
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{
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// symmetric curve must return 0.5 at t=0.5
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var f = Easing.CubicBezier( 0.42f, 0f, 0.58f, 1f );
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Assert.AreEqual( 0.5f, f( 0.5f ), 0.001f );
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f = Easing.CubicBezier( 0.25f, 0.1f, 0.75f, 0.9f );
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Assert.AreEqual( 0.5f, f( 0.5f ), 0.001f );
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}
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[TestMethod]
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public void GetFunctionCubicBezier()
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{
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var f = Easing.GetFunction( "cubic-bezier(0.16, 1, 0.3, 1)" );
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Assert.IsNotNull( f );
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Assert.AreEqual( 0f, f( 0f ) );
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Assert.AreEqual( 1f, f( 1f ) );
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Assert.IsTrue( Easing.TryGetFunction( "cubic-bezier(0.16, 1, 0.3, 1)", out var g ) );
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Assert.IsNotNull( g );
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// malformed strings fall through
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Assert.IsFalse( Easing.TryGetFunction( "cubic-bezier(0.1, 0.2)", out _ ) );
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Assert.IsFalse( Easing.TryGetFunction( "cubic-bezier(a, b, c, d)", out _ ) );
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}
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[TestMethod]
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public void GetFunctionNamedStillWorks()
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{
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Assert.IsTrue( Easing.TryGetFunction( "ease-in", out _ ) );
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Assert.IsTrue( Easing.TryGetFunction( "linear", out _ ) );
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Assert.IsFalse( Easing.TryGetFunction( "not-a-real-easing", out _ ) );
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}
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[TestMethod]
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public void StepStartEnd()
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{
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Assert.AreEqual( 0f, Easing.StepStart( 0f ) );
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Assert.AreEqual( 1f, Easing.StepStart( 0.0001f ) );
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Assert.AreEqual( 1f, Easing.StepStart( 1f ) );
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Assert.AreEqual( 0f, Easing.StepEnd( 0f ) );
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Assert.AreEqual( 0f, Easing.StepEnd( 0.9999f ) );
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Assert.AreEqual( 1f, Easing.StepEnd( 1f ) );
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var start = Easing.GetFunction( "step-start" );
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Assert.AreEqual( 0f, start( 0f ) );
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Assert.AreEqual( 1f, start( 0.5f ) );
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var end = Easing.GetFunction( "step-end" );
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Assert.AreEqual( 0f, end( 0.5f ) );
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Assert.AreEqual( 1f, end( 1f ) );
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}
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[TestMethod]
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public void StepsEnd()
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{
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var f = Easing.Steps( 4 );
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Assert.AreEqual( 0f, f( 0f ) );
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Assert.AreEqual( 0f, f( 0.24f ), 0.001f );
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Assert.AreEqual( 0.25f, f( 0.25f ), 0.001f );
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Assert.AreEqual( 0.5f, f( 0.5f ), 0.001f );
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Assert.AreEqual( 0.75f, f( 0.99f ), 0.001f );
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Assert.AreEqual( 1f, f( 1f ) );
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}
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[TestMethod]
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public void StepsStart()
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{
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var f = Easing.Steps( 4, true );
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Assert.AreEqual( 0f, f( 0f ) );
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Assert.AreEqual( 0.25f, f( 0.0001f ), 0.001f );
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Assert.AreEqual( 0.25f, f( 0.25f ), 0.001f );
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Assert.AreEqual( 0.5f, f( 0.26f ), 0.001f );
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Assert.AreEqual( 1f, f( 1f ) );
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}
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[TestMethod]
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public void GetFunctionSteps()
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{
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var f = Easing.GetFunction( "steps(4, end)" );
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Assert.IsNotNull( f );
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Assert.AreEqual( 0.5f, f( 0.5f ), 0.001f );
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Assert.IsTrue( Easing.TryGetFunction( "steps(4)", out _ ) );
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Assert.IsTrue( Easing.TryGetFunction( "steps(4, start)", out _ ) );
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Assert.IsTrue( Easing.TryGetFunction( "steps(2, jump-end)", out _ ) );
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Assert.IsFalse( Easing.TryGetFunction( "steps()", out _ ) );
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Assert.IsFalse( Easing.TryGetFunction( "steps(0)", out _ ) );
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Assert.IsFalse( Easing.TryGetFunction( "steps(4, banana)", out _ ) );
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}
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}
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