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test: add tests for INumber<T>.Sign
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32
X10D.Tests/src/Numerics/NumberTests.cs
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32
X10D.Tests/src/Numerics/NumberTests.cs
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#if NET7_0_OR_GREATER
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using NUnit.Framework;
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using X10D.Math;
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namespace X10D.Tests.Numerics;
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[TestFixture]
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internal class NumberTests
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{
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[Test]
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public void Sign_ShouldReturn1_GivenPositiveNumber()
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{
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Assert.That(NumberExtensions.Sign(2), Is.Positive);
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Assert.That(NumberExtensions.Sign(2), Is.EqualTo(1));
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}
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[Test]
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public void Sign_Should0_GivenZero()
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{
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Assert.That(NumberExtensions.Sign(0), Is.Not.Positive);
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Assert.That(NumberExtensions.Sign(0), Is.Not.Negative);
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Assert.That(NumberExtensions.Sign(0), Is.EqualTo(0));
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}
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[Test]
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public void Sign_ShouldReturnNegative1_GivenNegativeNumber()
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{
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Assert.That(NumberExtensions.Sign(-2), Is.Negative);
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Assert.That(NumberExtensions.Sign(-2), Is.EqualTo(-1));
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}
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}
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#endif
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