chore: initial commit

tests/StevanFreeborn.Results.Tests/ErrorTests.cs

@@ -0,0 +1,57 @@
+namespace StevanFreeborn.Results.Tests;
+
+public class ErrorTests
+{
+  [Test]
+  public async Task Constructor_WhenCalled_ItShouldSetCode()
+  {
+    var error = new Error("code", "message");
+    await Assert.That(error.Code).IsEqualTo("code");
+  }
+
+  [Test]
+  public async Task Constructor_WhenCalled_ItShouldSetMessage()
+  {
+    var error = new Error("code", "message");
+    await Assert.That(error.Message).IsEqualTo("message");
+  }
+
+  [Test]
+  public async Task Constructor_WhenCalledWithMetadata_ItShouldSetMetadata()
+  {
+    var metadata = new Dictionary<string, object> { { "key", "value" } };
+    var error = new Error("code", "message", metadata);
+    await Assert.That(error.Metadata!.Count).IsEqualTo(1);
+    await Assert.That(error.Metadata["key"]).IsEqualTo("value");
+  }
+
+  [Test]
+  public async Task Constructor_WhenCalledWithNullMetadata_ItShouldSetMetadataToNull()
+  {
+    var error = new Error("code", "message", null);
+    await Assert.That(error.Metadata!).IsNull();
+  }
+
+  [Test]
+  public async Task Equals_WhenErrorsHaveSameCodeAndMessage_ItShouldReturnTrue()
+  {
+    var error1 = new Error("code", "message");
+    var error2 = new Error("code", "message");
+    await Assert.That(error1).IsEqualTo(error2);
+  }
+
+  [Test]
+  public async Task Equals_WhenErrorsHaveDifferentCode_ItShouldReturnFalse()
+  {
+    var error1 = new Error("code1", "message");
+    var error2 = new Error("code2", "message");
+    await Assert.That(error1 == error2).IsFalse();
+  }
+
+  [Test]
+  public async Task Error_WhenCreated_ItShouldImplementIError()
+  {
+    var error = new Error("code", "message");
+    await Assert.That(error).IsAssignableTo<IError>();
+  }
+}