feat: initial project commit

src/Result.Tests/ResultEqualityTests.cs

@@ -0,0 +1,173 @@
+namespace Geekeey.Extensions.Result.Tests;
+
+[TestFixture]
+internal sealed class ResultEqualityTests
+{
+	[Test]
+	public void Equals_T_ReturnsTrue_ForSuccessAndEqualValue()
+	{
+		var a = Success(2);
+		var b = 2;
+
+		Assert.That(a.Equals(b), Is.True);
+	}
+
+	[Test]
+	public void Equals_T_ReturnsFalse_ForSuccessAndUnequalValue()
+	{
+		var a = Success(2);
+		var b = 3;
+
+		Assert.That(a.Equals(b), Is.False);
+	}
+
+	[Test]
+	public void Equals_T_ReturnsFalse_ForFailure()
+	{
+		var a = Failure<int>("error");
+		var b = 2;
+
+		Assert.That(a.Equals(b), Is.False);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsTrue_ForSuccessAndSuccessAndEqualValue()
+	{
+		var a = Success(2);
+		var b = Success(2);
+
+		Assert.That(a.Equals(b), Is.True);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsFalse_ForSuccessAndSuccessAndUnequalValue()
+	{
+		var a = Success(2);
+		var b = Success(3);
+
+		Assert.That(a.Equals(b), Is.False);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsFalse_ForSuccessAndFailure()
+	{
+		var a = Success(2);
+		var b = Failure<int>("error 1");
+
+		Assert.That(a.Equals(b), Is.False);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsFalse_ForFailureAndSuccess()
+	{
+		var a = Failure<int>("error");
+		var b = Success(2);
+
+		Assert.That(a.Equals(b), Is.False);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsTrue_ForFailureAndFailure()
+	{
+		var a = Failure<int>("error 1");
+		var b = Failure<int>("error 2");
+
+		Assert.That(a.Equals(b), Is.True);
+	}
+
+	[Test]
+	public void Equals_T_ReturnsTrue_ForSuccessAndEqualValue_WithComparer()
+	{
+		var a = Success(2);
+		var b = 2;
+
+		Assert.That(a.Equals(b, EqualityComparer<int>.Default), Is.True);
+	}
+
+	[Test]
+	public void Equals_T_ReturnsFalse_ForSuccessAndUnequalValue_WithComparer()
+	{
+		var a = Success(2);
+		var b = 3;
+
+		Assert.That(a.Equals(b, EqualityComparer<int>.Default), Is.False);
+	}
+
+	[Test]
+	public void Equals_T_ReturnsFalse_ForFailure_WithComparer()
+	{
+		var a = Failure<int>("error");
+		var b = 2;
+
+		Assert.That(a.Equals(b, EqualityComparer<int>.Default), Is.False);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsTrue_ForSuccessAndSuccessAndEqualValue_WithComparer()
+	{
+		var a = Success(2);
+		var b = Success(2);
+
+		Assert.That(a.Equals(b, EqualityComparer<int>.Default), Is.True);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsFalse_ForSuccessAndSuccessAndUnequalValue_WithComparer()
+	{
+		var a = Success(2);
+		var b = Success(3);
+
+		Assert.That(a.Equals(b, EqualityComparer<int>.Default), Is.False);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsFalse_ForSuccessAndFailure_WithComparer()
+	{
+		var a = Success(2);
+		var b = Failure<int>("error 1");
+
+		Assert.That(a.Equals(b, EqualityComparer<int>.Default), Is.False);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsFalse_ForFailureAndSuccess_WithComparer()
+	{
+		var a = Failure<int>("error");
+		var b = Success(2);
+
+		Assert.That(a.Equals(b, EqualityComparer<int>.Default), Is.False);
+	}
+
+	[Test]
+	public void Equals_Result_ReturnsTrue_ForFailureAndFailure_WithComparer()
+	{
+		var a = Failure<int>("error 1");
+		var b = Failure<int>("error 2");
+
+		Assert.That(a.Equals(b, EqualityComparer<int>.Default), Is.True);
+	}
+
+	[Test]
+	public void GetHashCode_ReturnsHashCode_ForSuccess()
+	{
+		var result = Success(2);
+
+		Assert.That(result.GetHashCode(), Is.EqualTo(2.GetHashCode()));
+	}
+
+	[Test]
+	public void GetHashCode_Returns_Zero_ForNull()
+	{
+		var result = Success<string?>(null);
+
+		Assert.That(result.GetHashCode(), Is.Zero);
+	}
+
+	[Test]
+	public void GetHashCode_Returns_Zero_ForFailure()
+	{
+		var result = Failure<int>("error");
+
+		Assert.That(result.GetHashCode(), Is.Zero);
+	}
+}