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Nils Blomgren
305
tests/EntKube.Provisioning.Tests/Domain/RedisClusterTests.cs
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305
tests/EntKube.Provisioning.Tests/Domain/RedisClusterTests.cs
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using EntKube.SharedKernel.Domain;
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using FluentAssertions;
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namespace EntKube.Provisioning.Tests.Domain;
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/// <summary>
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/// Tests for the RedisCluster aggregate root. This rich domain model tracks
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/// everything about a Redis instance managed by the OT-OPERATORS Redis Operator:
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/// replica count, storage, sentinel mode, persistence, and version lifecycle.
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///
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/// The OT-OPERATORS Redis Operator manages Redis, RedisCluster, RedisReplication,
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/// and RedisSentinel CRDs on Kubernetes. Each Redis instance can be standalone,
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/// replicated, or run with Sentinel for HA.
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/// </summary>
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public class RedisClusterTests
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{
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// ─── Creation ──────────────────────────────────────────────────────────────
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[Fact]
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public void Create_WithValidInputs_ReturnsClusterInProvisioningState()
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{
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// Arrange & Act — A platform admin provisions a new Redis instance
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// for shared caching on a specific Kubernetes cluster.
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Guid environmentId = Guid.NewGuid();
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Guid clusterId = Guid.NewGuid();
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Provisioning.Domain.RedisCluster redisCluster = Provisioning.Domain.RedisCluster.Create(
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environmentId: environmentId,
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clusterId: clusterId,
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name: "platform-redis",
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ns: "redis",
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redisVersion: "7.2.5",
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replicas: 3,
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storageSize: "10Gi",
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sentinelEnabled: true);
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// Assert — The cluster starts in Provisioning state, waiting for the
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// reconciler to create the Redis CR.
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redisCluster.Id.Should().NotBe(Guid.Empty);
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redisCluster.EnvironmentId.Should().Be(environmentId);
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redisCluster.ClusterId.Should().Be(clusterId);
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redisCluster.Name.Should().Be("platform-redis");
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redisCluster.Namespace.Should().Be("redis");
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redisCluster.RedisVersion.Should().Be("7.2.5");
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redisCluster.Replicas.Should().Be(3);
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redisCluster.StorageSize.Should().Be("10Gi");
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redisCluster.SentinelEnabled.Should().BeTrue();
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redisCluster.Status.Should().Be(Provisioning.Domain.RedisClusterStatus.Provisioning);
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}
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[Fact]
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public void Create_WithEmptyName_ThrowsArgumentException()
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{
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// Arrange & Act — The domain rejects invalid cluster names.
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Action act = () => Provisioning.Domain.RedisCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "", "ns", "7.2.5", 3, "10Gi", true);
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// Assert
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act.Should().Throw<ArgumentException>().WithParameterName("name");
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}
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[Fact]
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public void Create_WithZeroReplicas_ThrowsArgumentException()
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{
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// Arrange & Act — Must have at least 1 replica.
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Action act = () => Provisioning.Domain.RedisCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "cache", "ns", "7.2.5", 0, "10Gi", true);
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// Assert
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act.Should().Throw<ArgumentException>().WithParameterName("replicas");
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}
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[Fact]
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public void Create_WithEmptyNamespace_ThrowsArgumentException()
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{
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// Arrange & Act
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Action act = () => Provisioning.Domain.RedisCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "cache", "", "7.2.5", 3, "10Gi", true);
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// Assert
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act.Should().Throw<ArgumentException>().WithParameterName("ns");
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}
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// ─── Adoption ──────────────────────────────────────────────────────────────
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[Fact]
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public void Adopt_FromExistingInstance_CreatesRunningCluster()
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{
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// Arrange & Act — When we adopt an existing Redis instance that's
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// already running on the K8s cluster, we create it in Running state.
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Provisioning.Domain.RedisCluster redisCluster = Provisioning.Domain.RedisCluster.Adopt(
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environmentId: Guid.NewGuid(),
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clusterId: Guid.NewGuid(),
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name: "existing-redis",
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ns: "redis",
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redisVersion: "7.0.15",
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replicas: 3,
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storageSize: "5Gi",
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sentinelEnabled: true);
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// Assert — Adopted clusters start in Running state.
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redisCluster.Status.Should().Be(Provisioning.Domain.RedisClusterStatus.Running);
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redisCluster.Name.Should().Be("existing-redis");
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redisCluster.LastReconcileAt.Should().NotBeNull();
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}
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// ─── Status transitions ────────────────────────────────────────────────────
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[Fact]
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public void MarkRunning_TransitionsFromProvisioning()
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{
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// Arrange — A freshly created cluster in Provisioning state.
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Provisioning.Domain.RedisCluster redisCluster = CreateTestCluster();
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// Act — The reconciler confirmed the Redis instance is ready.
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redisCluster.MarkRunning();
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// Assert
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redisCluster.Status.Should().Be(Provisioning.Domain.RedisClusterStatus.Running);
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redisCluster.LastReconcileAt.Should().NotBeNull();
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}
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[Fact]
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public void MarkDegraded_SetsStatusToDegraded()
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{
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// Arrange
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Provisioning.Domain.RedisCluster redisCluster = CreateTestCluster();
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redisCluster.MarkRunning();
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// Act — Reconciler detected an issue.
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redisCluster.MarkDegraded("Replica pod not ready");
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// Assert
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redisCluster.Status.Should().Be(Provisioning.Domain.RedisClusterStatus.Degraded);
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redisCluster.StatusMessage.Should().Be("Replica pod not ready");
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}
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// ─── Version upgrades ──────────────────────────────────────────────────────
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[Fact]
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public void RequestUpgrade_WhenRunning_SetsUpgradingStatusAndTargetVersion()
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{
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// Arrange — A running cluster at version 7.0.15.
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Provisioning.Domain.RedisCluster redisCluster = Provisioning.Domain.RedisCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "cache", "ns", "7.0.15", 3, "10Gi", true);
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redisCluster.MarkRunning();
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// Act — Platform admin requests upgrade to 7.2.5.
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Result<string> result = redisCluster.RequestUpgrade("7.2.5");
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// Assert — The cluster transitions to Upgrading state.
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result.IsSuccess.Should().BeTrue();
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redisCluster.Status.Should().Be(Provisioning.Domain.RedisClusterStatus.Upgrading);
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redisCluster.TargetVersion.Should().Be("7.2.5");
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}
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[Fact]
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public void RequestUpgrade_WhenNotRunning_ReturnsFailure()
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{
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// Arrange — A cluster still provisioning can't be upgraded.
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Provisioning.Domain.RedisCluster redisCluster = CreateTestCluster();
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// Act
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Result<string> result = redisCluster.RequestUpgrade("7.2.5");
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// Assert
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result.IsSuccess.Should().BeFalse();
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result.Error.Should().Contain("running");
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}
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[Fact]
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public void RequestUpgrade_ToSameVersion_ReturnsFailure()
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{
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// Arrange — A cluster already at version 7.2.5.
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Provisioning.Domain.RedisCluster redisCluster = Provisioning.Domain.RedisCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "cache", "ns", "7.2.5", 3, "10Gi", true);
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redisCluster.MarkRunning();
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// Act — Try to upgrade to the same version.
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Result<string> result = redisCluster.RequestUpgrade("7.2.5");
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// Assert
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result.IsSuccess.Should().BeFalse();
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result.Error.Should().Contain("same version");
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}
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[Fact]
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public void CompleteUpgrade_TransitionsToRunningWithNewVersion()
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{
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// Arrange — A cluster mid-upgrade.
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Provisioning.Domain.RedisCluster redisCluster = Provisioning.Domain.RedisCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "cache", "ns", "7.0.15", 3, "10Gi", true);
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redisCluster.MarkRunning();
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redisCluster.RequestUpgrade("7.2.5");
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// Act — Reconciler confirmed upgrade completed.
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redisCluster.CompleteUpgrade();
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// Assert — Version updated, status back to Running.
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redisCluster.RedisVersion.Should().Be("7.2.5");
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redisCluster.Status.Should().Be(Provisioning.Domain.RedisClusterStatus.Running);
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redisCluster.TargetVersion.Should().BeNull();
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}
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// ─── Scaling ───────────────────────────────────────────────────────────────
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[Fact]
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public void ScaleReplicas_UpdatesReplicaCount()
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{
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// Arrange — A running 3-replica cluster.
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Provisioning.Domain.RedisCluster redisCluster = CreateTestCluster();
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redisCluster.MarkRunning();
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// Act — Scale up to 5 replicas for more read capacity.
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Result<string> result = redisCluster.ScaleReplicas(5);
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// Assert
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result.IsSuccess.Should().BeTrue();
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redisCluster.Replicas.Should().Be(5);
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}
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[Fact]
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public void ScaleReplicas_ToZero_ReturnsFailure()
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{
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// Arrange
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Provisioning.Domain.RedisCluster redisCluster = CreateTestCluster();
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redisCluster.MarkRunning();
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// Act
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Result<string> result = redisCluster.ScaleReplicas(0);
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// Assert
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result.IsSuccess.Should().BeFalse();
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result.Error.Should().Contain("at least 1");
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}
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// ─── Configuration ─────────────────────────────────────────────────────────
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[Fact]
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public void ConfigureSentinel_EnablesOrDisablesSentinel()
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{
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// Arrange — A cluster without sentinel.
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Provisioning.Domain.RedisCluster redisCluster = Provisioning.Domain.RedisCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "cache", "ns", "7.2.5", 3, "10Gi", false);
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redisCluster.MarkRunning();
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// Act — Enable sentinel for HA.
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redisCluster.ConfigureSentinel(true);
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// Assert
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redisCluster.SentinelEnabled.Should().BeTrue();
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}
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// ─── Helper ────────────────────────────────────────────────────────────────
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private static Provisioning.Domain.RedisCluster CreateTestCluster()
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{
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return Provisioning.Domain.RedisCluster.Create(
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Guid.NewGuid(),
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Guid.NewGuid(),
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"test-redis",
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"redis",
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"7.2.5",
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3,
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"10Gi",
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true);
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}
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}
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