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This commit is contained in:
Nils Blomgren
405
tests/EntKube.Provisioning.Tests/Domain/MongoClusterTests.cs
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405
tests/EntKube.Provisioning.Tests/Domain/MongoClusterTests.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 MongoCluster aggregate root. This rich domain model tracks
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/// everything about a MongoDB Community Operator cluster: replica set members,
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/// storage, backup configuration, databases, users, and version lifecycle.
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///
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/// MongoDB Community Operator manages MongoDBCommunity CRDs on Kubernetes.
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/// Each cluster is a replica set with configurable members, storage, and
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/// authentication. Backup is handled via scheduled mongodump jobs to MinIO.
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/// </summary>
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public class MongoClusterTests
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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 MongoDB cluster
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// for shared use 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.MongoCluster mongoCluster = Provisioning.Domain.MongoCluster.Create(
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environmentId: environmentId,
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clusterId: clusterId,
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name: "platform-mongo",
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ns: "mongodb-system",
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mongoVersion: "7.0.12",
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members: 3,
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storageSize: "50Gi",
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minioEndpoint: "minio.minio-system.svc:9000",
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minioBucket: "mongo-backups",
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minioCredentialsSecret: "minio-mongo-credentials");
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// Assert — The cluster starts in Provisioning state, waiting for the
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// reconciler to create the MongoDBCommunity resource.
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mongoCluster.Id.Should().NotBe(Guid.Empty);
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mongoCluster.EnvironmentId.Should().Be(environmentId);
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mongoCluster.ClusterId.Should().Be(clusterId);
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mongoCluster.Name.Should().Be("platform-mongo");
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mongoCluster.Namespace.Should().Be("mongodb-system");
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mongoCluster.MongoVersion.Should().Be("7.0.12");
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mongoCluster.Members.Should().Be(3);
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mongoCluster.StorageSize.Should().Be("50Gi");
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mongoCluster.Status.Should().Be(Provisioning.Domain.MongoClusterStatus.Provisioning);
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mongoCluster.Databases.Should().BeEmpty();
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}
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[Fact]
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public void Create_WithMinIOBackupConfig_SetsBackupConfiguration()
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{
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// Arrange & Act — Backup to MinIO is configured at creation time
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// for mongodump-based backups. Unlike CNPG WAL archiving, MongoDB
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// uses periodic full dumps.
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Provisioning.Domain.MongoCluster mongoCluster = Provisioning.Domain.MongoCluster.Create(
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environmentId: Guid.NewGuid(),
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clusterId: Guid.NewGuid(),
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name: "prod-mongo",
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ns: "mongodb-prod",
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mongoVersion: "7.0.12",
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members: 3,
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storageSize: "100Gi",
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minioEndpoint: "minio.minio-system.svc:9000",
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minioBucket: "mongo-dump-archive",
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minioCredentialsSecret: "minio-mongo-creds");
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// Assert — Backup configuration is stored as part of the aggregate.
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mongoCluster.BackupConfig.Should().NotBeNull();
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mongoCluster.BackupConfig!.MinioEndpoint.Should().Be("minio.minio-system.svc:9000");
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mongoCluster.BackupConfig.Bucket.Should().Be("mongo-dump-archive");
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mongoCluster.BackupConfig.CredentialsSecret.Should().Be("minio-mongo-creds");
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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.MongoCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "", "ns", "7.0.12", 3, "50Gi",
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"minio:9000", "bucket", "secret");
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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_WithZeroMembers_ThrowsArgumentException()
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{
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// Arrange & Act — Must have at least 1 replica set member.
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Action act = () => Provisioning.Domain.MongoCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "db", "ns", "7.0.12", 0, "50Gi",
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"minio:9000", "bucket", "secret");
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// Assert
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act.Should().Throw<ArgumentException>().WithParameterName("members");
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}
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[Fact]
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public void Create_WithEmptyMinioEndpoint_CreatesClusterWithoutBackup()
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{
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// Arrange & Act — Backup is optional. When MinIO endpoint is empty,
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// the cluster should be created successfully without backup config.
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Provisioning.Domain.MongoCluster mongoCluster = Provisioning.Domain.MongoCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "db", "ns", "7.0.12", 3, "50Gi",
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"", "bucket", "secret");
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// Assert — cluster exists but has no backup configuration.
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mongoCluster.Should().NotBeNull();
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mongoCluster.BackupConfig.Should().BeNull();
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}
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// ─── Adoption ──────────────────────────────────────────────────────────────
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[Fact]
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public void Adopt_FromExistingCluster_CreatesRunningClusterWithDiscoveredConfig()
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{
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// Arrange & Act — When we adopt an existing MongoDBCommunity cluster
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// that's already running on K8s, we create it in Running state.
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Provisioning.Domain.MongoCluster mongoCluster = Provisioning.Domain.MongoCluster.Adopt(
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environmentId: Guid.NewGuid(),
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clusterId: Guid.NewGuid(),
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name: "existing-mongo",
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ns: "mongodb-system",
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mongoVersion: "6.0.16",
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members: 2,
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storageSize: "20Gi",
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minioEndpoint: "minio.minio-system.svc:9000",
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minioBucket: "existing-backups",
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minioCredentialsSecret: "existing-minio-creds",
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databases: new List<string> { "app_db", "analytics_db" });
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// Assert — Adopted clusters start in Running state and include
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// any databases that were already present.
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mongoCluster.Status.Should().Be(Provisioning.Domain.MongoClusterStatus.Running);
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mongoCluster.Databases.Should().HaveCount(2);
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mongoCluster.Databases.Should().Contain("app_db");
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mongoCluster.Databases.Should().Contain("analytics_db");
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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.MongoCluster mongoCluster = CreateTestCluster();
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// Act — The reconciler confirmed the cluster is ready.
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mongoCluster.MarkRunning();
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// Assert
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mongoCluster.Status.Should().Be(Provisioning.Domain.MongoClusterStatus.Running);
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mongoCluster.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.MongoCluster mongoCluster = CreateTestCluster();
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mongoCluster.MarkRunning();
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// Act — Reconciler detected an issue.
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mongoCluster.MarkDegraded("Replica set member not ready");
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// Assert
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mongoCluster.Status.Should().Be(Provisioning.Domain.MongoClusterStatus.Degraded);
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mongoCluster.StatusMessage.Should().Be("Replica set member not ready");
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}
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// ─── Database management ───────────────────────────────────────────────────
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[Fact]
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public void AddDatabase_WhenRunning_AddsDatabaseToList()
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{
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// Arrange — A running cluster can have databases added.
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Provisioning.Domain.MongoCluster mongoCluster = CreateTestCluster();
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mongoCluster.MarkRunning();
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// Act — An application requests a new database.
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Result<string> result = mongoCluster.AddDatabase("my_app_db", "app_user");
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// Assert
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result.IsSuccess.Should().BeTrue();
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mongoCluster.Databases.Should().Contain("my_app_db");
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}
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[Fact]
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public void AddDatabase_WhenNotRunning_ReturnsFailure()
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{
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// Arrange — A cluster still provisioning can't accept new databases.
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Provisioning.Domain.MongoCluster mongoCluster = CreateTestCluster();
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// Act
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Result<string> result = mongoCluster.AddDatabase("my_db", "user");
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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 AddDatabase_DuplicateName_ReturnsFailure()
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{
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// Arrange — A running cluster with one database already.
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Provisioning.Domain.MongoCluster mongoCluster = CreateTestCluster();
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mongoCluster.MarkRunning();
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mongoCluster.AddDatabase("existing_db", "user1");
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// Act — Try to add a database with the same name.
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Result<string> result = mongoCluster.AddDatabase("existing_db", "user2");
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// Assert
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result.IsSuccess.Should().BeFalse();
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result.Error.Should().Contain("already exists");
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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 6.0.16.
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Provisioning.Domain.MongoCluster mongoCluster = Provisioning.Domain.MongoCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "db", "ns", "6.0.16", 3, "50Gi",
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"minio:9000", "bucket", "secret");
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mongoCluster.MarkRunning();
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// Act — Platform admin requests upgrade to 7.0.12.
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Result<string> result = mongoCluster.RequestUpgrade("7.0.12");
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// Assert — The cluster transitions to Upgrading state.
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result.IsSuccess.Should().BeTrue();
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mongoCluster.Status.Should().Be(Provisioning.Domain.MongoClusterStatus.Upgrading);
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mongoCluster.TargetVersion.Should().Be("7.0.12");
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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.MongoCluster mongoCluster = CreateTestCluster();
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// Act
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Result<string> result = mongoCluster.RequestUpgrade("7.0.12");
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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 7.0.12.
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Provisioning.Domain.MongoCluster mongoCluster = Provisioning.Domain.MongoCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "db", "ns", "7.0.12", 3, "50Gi",
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"minio:9000", "bucket", "secret");
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mongoCluster.MarkRunning();
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// Act — Try to upgrade to the same version.
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Result<string> result = mongoCluster.RequestUpgrade("7.0.12");
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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.MongoCluster mongoCluster = Provisioning.Domain.MongoCluster.Create(
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Guid.NewGuid(), Guid.NewGuid(), "db", "ns", "6.0.16", 3, "50Gi",
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"minio:9000", "bucket", "secret");
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mongoCluster.MarkRunning();
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mongoCluster.RequestUpgrade("7.0.12");
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// Act — Reconciler confirmed upgrade completed.
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mongoCluster.CompleteUpgrade();
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// Assert — Version updated, status back to Running.
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mongoCluster.MongoVersion.Should().Be("7.0.12");
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mongoCluster.Status.Should().Be(Provisioning.Domain.MongoClusterStatus.Running);
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mongoCluster.TargetVersion.Should().BeNull();
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}
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// ─── Scaling ───────────────────────────────────────────────────────────────
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[Fact]
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public void ScaleMembers_UpdatesMemberCount()
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{
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// Arrange — A running 3-member cluster.
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Provisioning.Domain.MongoCluster mongoCluster = CreateTestCluster();
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mongoCluster.MarkRunning();
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// Act — Scale up to 5 members for more redundancy.
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Result<string> result = mongoCluster.ScaleMembers(5);
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// Assert
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result.IsSuccess.Should().BeTrue();
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mongoCluster.Members.Should().Be(5);
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}
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[Fact]
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public void ScaleMembers_ToZero_ReturnsFailure()
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{
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// Arrange
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Provisioning.Domain.MongoCluster mongoCluster = CreateTestCluster();
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mongoCluster.MarkRunning();
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// Act
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Result<string> result = mongoCluster.ScaleMembers(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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// ─── Backup configuration ──────────────────────────────────────────────────
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[Fact]
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public void ConfigureBackupSchedule_UpdatesRetentionPolicy()
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{
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// Arrange — A running cluster needs its backup schedule updated.
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Provisioning.Domain.MongoCluster mongoCluster = CreateTestCluster();
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mongoCluster.MarkRunning();
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// Act — Set backup to run every 6 hours with 30-day retention.
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mongoCluster.ConfigureBackupSchedule("0 */6 * * *", retentionDays: 30);
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// Assert
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mongoCluster.BackupConfig!.Schedule.Should().Be("0 */6 * * *");
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mongoCluster.BackupConfig.RetentionDays.Should().Be(30);
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}
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// ─── Helper ────────────────────────────────────────────────────────────────
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private static Provisioning.Domain.MongoCluster CreateTestCluster()
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{
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return Provisioning.Domain.MongoCluster.Create(
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Guid.NewGuid(),
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Guid.NewGuid(),
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"test-mongo",
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"mongodb-system",
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"7.0.12",
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3,
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"50Gi",
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"minio.minio-system.svc:9000",
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"mongo-backups",
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"minio-mongo-credentials");
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}
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}
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Block a user