105 lines
3.7 KiB
C#
105 lines
3.7 KiB
C#
using System.Globalization;
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using CSMic;
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using CSMic.StandardLibrary;
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namespace CSMic.Tests;
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public class TrigonometryFunctionsTests
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{
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private InputInterpreter _interp = null!;
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[SetUp]
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public void Setup()
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{
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CultureInfo.CurrentCulture = CultureInfo.InvariantCulture;
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_interp = new InputInterpreter();
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Initializer.InitializeAll(_interp);
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}
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private static void AssertSuccess(decimal result, decimal expected, InputInterpreter interp)
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{
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Assert.That(result, Is.EqualTo(expected));
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Assert.That(interp.NumericValue, Is.EqualTo(expected));
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Assert.That(interp.StringValue, Is.EqualTo(string.Empty));
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}
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private static void AssertApprox(decimal result, decimal expected, decimal tol, InputInterpreter interp)
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{
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Assert.That(Math.Abs(result - expected) <= tol, $"Expected ~{expected} ± {tol}, got {result}");
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Assert.That(interp.StringValue, Is.EqualTo(string.Empty));
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}
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[Test]
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public void BasicTrig_ZeroPoints()
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{
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AssertSuccess(_interp.Interpret("sin(0)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("cos(0)"), 1m, _interp);
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AssertSuccess(_interp.Interpret("tan(0)"), 0m, _interp);
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}
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[Test]
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public void BasicTrig_CommonAngles()
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{
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AssertApprox(_interp.Interpret("sin(pi/2)"), 1m, 0.0000000000001m, _interp);
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AssertApprox(_interp.Interpret("cos(pi/2)"), 0m, 0.0000000000001m, _interp);
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AssertApprox(_interp.Interpret("tan(pi/4)"), 1m, 0.0000000000001m, _interp);
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}
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[Test]
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public void InverseTrig_ZeroPoints()
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{
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AssertSuccess(_interp.Interpret("asin(0)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("acos(1)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("atan(0)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("atan2(0, 1)"), 0m, _interp);
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}
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[Test]
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public void InverseTrig_CommonValues()
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{
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// asin(1) ~= pi/2, acos(0) ~= pi/2, atan(1) ~= pi/4, atan2(1,0) ~= pi/2
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AssertApprox(_interp.Interpret("asin(1)"), 1.5707963267948966m, 0.0000000000001m, _interp);
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AssertApprox(_interp.Interpret("acos(0)"), 1.5707963267948966m, 0.0000000000001m, _interp);
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AssertApprox(_interp.Interpret("atan(1)"), 0.7853981633974483m, 0.0000000000001m, _interp);
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AssertApprox(_interp.Interpret("atan2(1, 0)"), 1.5707963267948966m, 0.0000000000001m, _interp);
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}
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[Test]
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public void ImplicitMultiplication_WithFunctions()
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{
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AssertSuccess(_interp.Interpret("2sin(0)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("2 sin(0)"), 0m, _interp);
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AssertApprox(_interp.Interpret("2sin(pi/2)"), 2m, 0.0000000000001m, _interp);
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}
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}
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public class HyperbolicTrigFunctionsTests
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{
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private InputInterpreter _interp = null!;
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[SetUp]
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public void Setup()
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{
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CultureInfo.CurrentCulture = CultureInfo.InvariantCulture;
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_interp = new InputInterpreter();
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Initializer.InitializeAll(_interp);
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}
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private static void AssertSuccess(decimal result, decimal expected, InputInterpreter interp)
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{
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Assert.That(result, Is.EqualTo(expected));
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Assert.That(interp.NumericValue, Is.EqualTo(expected));
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Assert.That(interp.StringValue, Is.EqualTo(string.Empty));
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}
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[Test]
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public void Hyperbolic_ZeroPoints()
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{
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AssertSuccess(_interp.Interpret("sinh(0)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("cosh(0)"), 1m, _interp);
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AssertSuccess(_interp.Interpret("tanh(0)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("asinh(0)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("acosh(1)"), 0m, _interp);
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AssertSuccess(_interp.Interpret("atanh(0)"), 0m, _interp);
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}
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}
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