too much for one commit

tests/EntKube.Identity.Tests/Domain/EnvironmentTests.cs

@@ -0,0 +1,115 @@
+using EntKube.Identity.Domain;
+using FluentAssertions;
+
+namespace EntKube.Identity.Tests.Domain;
+
+public class EnvironmentTests
+{
+    [Fact]
+    public void Create_WithValidInputs_CreatesActiveEnvironment()
+    {
+        // Arrange — A tenant admin creates a new environment (e.g. "dev")
+        // for their organization. The environment starts in an Active state
+        // and is ready to have clusters assigned to it.
+
+        Guid tenantId = Guid.NewGuid();
+
+        // Act
+
+        TenantEnvironment env = TenantEnvironment.Create(tenantId, "Development", "dev");
+
+        // Assert — The environment should be active and linked to its tenant.
+
+        env.Id.Should().NotBe(Guid.Empty);
+        env.TenantId.Should().Be(tenantId);
+        env.Name.Should().Be("Development");
+        env.Slug.Should().Be("dev");
+        env.Status.Should().Be(EnvironmentStatus.Active);
+        env.CreatedAt.Should().BeCloseTo(DateTimeOffset.UtcNow, TimeSpan.FromSeconds(5));
+    }
+
+    [Fact]
+    public void Create_NormalizesSlugToLowerCase()
+    {
+        // Arrange & Act — Slugs should always be lowercase for consistent lookups.
+
+        TenantEnvironment env = TenantEnvironment.Create(Guid.NewGuid(), "Production", "PROD");
+
+        // Assert
+
+        env.Slug.Should().Be("prod");
+    }
+
+    [Fact]
+    public void Create_WithEmptyName_ThrowsArgumentException()
+    {
+        // Arrange & Act
+
+        Action act = () => TenantEnvironment.Create(Guid.NewGuid(), "", "dev");
+
+        // Assert
+
+        act.Should().Throw<ArgumentException>()
+            .WithParameterName("name");
+    }
+
+    [Fact]
+    public void Create_WithEmptySlug_ThrowsArgumentException()
+    {
+        // Arrange & Act
+
+        Action act = () => TenantEnvironment.Create(Guid.NewGuid(), "Development", "");
+
+        // Assert
+
+        act.Should().Throw<ArgumentException>()
+            .WithParameterName("slug");
+    }
+
+    [Fact]
+    public void Create_WithEmptyTenantId_ThrowsArgumentException()
+    {
+        // Arrange & Act — Every environment must belong to a tenant.
+
+        Action act = () => TenantEnvironment.Create(Guid.Empty, "Development", "dev");
+
+        // Assert
+
+        act.Should().Throw<ArgumentException>()
+            .WithParameterName("tenantId");
+    }
+
+    [Fact]
+    public void Deactivate_SetsStatusToInactive()
+    {
+        // Arrange — An active environment that the admin wants to disable
+        // (e.g. decommissioning a staging environment).
+
+        TenantEnvironment env = TenantEnvironment.Create(Guid.NewGuid(), "Staging", "staging");
+
+        // Act
+
+        env.Deactivate();
+
+        // Assert
+
+        env.Status.Should().Be(EnvironmentStatus.Inactive);
+    }
+
+    [Fact]
+    public void Activate_SetsStatusToActive()
+    {
+        // Arrange — A previously deactivated environment being re-enabled.
+
+        TenantEnvironment env = TenantEnvironment.Create(Guid.NewGuid(), "Staging", "staging");
+        env.Deactivate();
+
+        // Act
+
+        env.Activate();
+
+        // Assert
+
+        env.Status.Should().Be(EnvironmentStatus.Active);
+    }
+}