Bring Windows integration test runtime down to less than half

This changelist parallelises the Windows integration test specs by modifying the integration test runner to accept arbitrary arguments to be passed to the `ginkgo` binary, allowing the integration test GitHub workflow to pass the `-p` and `--procs` arguments to parallelise running the test specs. This has brought the total runtime of Windows integration tests down to ~55 minutes from ~2 hours and 30 minutes.

The cluster version used in the tests has been updated to the latest EKS version 1.27, and as a result, one of the tests that uses the Docker runtime has been removed as it's no longer supported.

integration/main.go

@@ -123,7 +123,11 @@ func runGinkgo(ctx context.Context, wg *sync.WaitGroup, summaries chan []string,
 		}
 	}
 
-	args := []string{"--no-color", fmt.Sprintf("--timeout=%s", suiteTimeout), "-tags", "integration", "-v", "--progress"}
+	var args []string
+	if ginkgoArgs := os.Getenv("GINKGO_ARGS"); ginkgoArgs != "" {
+		args = strings.Split(ginkgoArgs, " ")
+	}
+	args = append(args, "--no-color", fmt.Sprintf("--timeout=%s", suiteTimeout), "-tags", "integration", "-v", "--progress")
 	if focus := os.Getenv("INTEGRATION_TEST_FOCUS"); focus != "" {
 		args = append(args, fmt.Sprintf(`--focus="%s"`, focus))
 	}

integration/tests/windows/windows_test.go

@@ -33,16 +33,16 @@ func TestWindowsCluster(t *testing.T) {
 var params *tests.Params
 
 var _ = BeforeSuite(func() {
-	params = tests.NewParams("windows")
+	params = tests.NewParams(fmt.Sprintf("windows-%d", GinkgoParallelProcess()))
 })
 
 var _ = Describe("(Integration) [Windows Nodegroups]", func() {
 
-	createCluster := func(withOIDC bool, ami, containerRuntime, clusterName string) {
+	createCluster := func(withOIDC bool, ami, clusterName string) {
 		By("creating a new cluster with Windows nodegroups")
 		clusterConfig := api.NewClusterConfig()
 		clusterConfig.Metadata.Name = clusterName
-		clusterConfig.Metadata.Version = api.Version1_23
+		clusterConfig.Metadata.Version = api.LatestVersion
 		clusterConfig.Metadata.Region = api.DefaultRegion
 		clusterConfig.IAM.WithOIDC = &withOIDC
 
@@ -54,7 +54,6 @@ var _ = Describe("(Integration) [Windows Nodegroups]", func() {
 					VolumeSize:   aws.Int(120),
 					InstanceType: "t3a.xlarge",
 				},
-				ContainerRuntime: &containerRuntime,
 			},
 		}
 		clusterConfig.ManagedNodeGroups = []*api.ManagedNodeGroup{
@@ -90,7 +89,7 @@ var _ = Describe("(Integration) [Windows Nodegroups]", func() {
 	}
 
 	deleteCluster := func(clusterName string) {
-		By("deleting the windows cluster")
+		By("deleting the Windows cluster")
 		cmd := params.EksctlDeleteCmd.WithArgs(
 			"cluster",
 			"--name", clusterName,
@@ -99,16 +98,14 @@ var _ = Describe("(Integration) [Windows Nodegroups]", func() {
 	}
 
 	Context("When creating a cluster with Windows nodegroups", func() {
-		DescribeTable("it should be able to run Windows pods", func(withOIDC bool, ami, workload, containerRuntime, clusterName string) {
-			createCluster(withOIDC, ami, containerRuntime, clusterName)
+		DescribeTable("it should be able to run Windows pods", func(withOIDC bool, ami, workload, clusterName string) {
+			createCluster(withOIDC, ami, clusterName)
 			runWindowsPod(workload)
 			deleteCluster(clusterName)
 		},
-			Entry("windows when withOIDC is disabled", false, api.NodeImageFamilyWindowsServer2019FullContainer, "windows-server-iis.yaml", api.ContainerRuntimeDockerForWindows, "windows-cluster1"),
-			Entry("windows when withOIDC is enabled", true, api.NodeImageFamilyWindowsServer2019FullContainer, "windows-server-iis.yaml", api.ContainerRuntimeDockerForWindows, "windows-cluster2"),
-
-			Entry("Windows Server 2022 when withOIDC is enabled", true, api.NodeImageFamilyWindowsServer2022FullContainer, "windows-server-iis-2022.yaml", api.ContainerRuntimeDockerForWindows, "windows-cluster3"),
-			Entry("Windows Server 2022 with containerd", true, api.NodeImageFamilyWindowsServer2022FullContainer, "windows-server-iis-2022.yaml", api.ContainerRuntimeContainerD, "windows-cluster4"),
+			Entry("Windows when withOIDC is disabled", false, api.NodeImageFamilyWindowsServer2019FullContainer, "windows-server-iis.yaml", "windows-cluster1"),
+			Entry("Windows when withOIDC is enabled", true, api.NodeImageFamilyWindowsServer2019FullContainer, "windows-server-iis.yaml", "windows-cluster2"),
+			Entry("Windows Server 2022 when withOIDC is enabled", true, api.NodeImageFamilyWindowsServer2022FullContainer, "windows-server-iis-2022.yaml", "windows-cluster3"),
 		)
 	})