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tests(stdlib): add tests for abs, sign, min, max, constants

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Jordan Wages 2025-08-20 05:53:37 -05:00
commit ced7fbd7c3
1 changed files with 71 additions and 1 deletions
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72
src/tests/StdlibFunctionsTests.cs
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@ -20,5 +20,75 @@ public class StdlibFunctionsTests
Constants.Initialize(_interp);
Functions.Initialize(_interp); ;
}
}
private static void AssertSuccess(decimal result, decimal expected, InputInterpreter interp)
{
Assert.That(result, Is.EqualTo(expected));
Assert.That(interp.NumericValue, Is.EqualTo(expected));
Assert.That(interp.StringValue, Is.EqualTo(string.Empty));
}
[TestCase("abs(-1)", 1)]
[TestCase("abs(0)", 0)]
[TestCase("abs(2)", 2)]
[TestCase("abs(-3.5)", 3.5m)]
[TestCase("2 + abs(-1)", 3)]
public void AbsoluteValue_Works(string expr, decimal expected)
{
var result = _interp.Interpret(expr);
AssertSuccess(result, expected, _interp);
}
[TestCase("sign(5)", 1)]
[TestCase("sign(0)", 1)]
[TestCase("sign(-2)", -1)]
[TestCase("2*sign(-3)", -2)]
public void Sign_Works(string expr, decimal expected)
{
var result = _interp.Interpret(expr);
AssertSuccess(result, expected, _interp);
}
[TestCase("min(1,2)", 1)]
[TestCase("min(2,1)", 1)]
[TestCase("min(-3,4)", -3)]
[TestCase("1 + min(3,4)", 4)]
[TestCase("min(2.5, 2.6)", 2.5m)]
public void Min_Works(string expr, decimal expected)
{
var result = _interp.Interpret(expr);
AssertSuccess(result, expected, _interp);
}
[TestCase("max(1,2)", 2)]
[TestCase("max(2,1)", 2)]
[TestCase("max(-3,4)", 4)]
[TestCase("1 + max(3,4)", 5)]
[TestCase("max(2.5, 2.6)", 2.6m)]
public void Max_Works(string expr, decimal expected)
{
var result = _interp.Interpret(expr);
AssertSuccess(result, expected, _interp);
}
[TestCase("pi", 3.1415926535897931m)]
[TestCase("e", 2.7182818284590451m)]
[TestCase("tau", 6.2831853071795862m)]
[TestCase("phi", 1.6180339887498948m)]
[TestCase("goldenratio", 1.6180339887498948m)]
[TestCase("eurler", 0.5772156649015329m)]
[TestCase("omega", 0.5671432904097839m)]
public void Constants_AreAvailable(string expr, decimal expected)
{
var result = _interp.Interpret(expr);
AssertSuccess(result, expected, _interp);
}
[Test]
public void Constants_CanBeUsedInArithmetic()
{
AssertSuccess(_interp.Interpret("2*pi"), 6.2831853071795862m, _interp);
AssertSuccess(_interp.Interpret("pi + e"), 5.8598744820488382m, _interp);
AssertSuccess(_interp.Interpret("tau / pi"), 2m, _interp);
}
}