tests/ai-conformance: add DRA CUDA test

Author: justinsb

tests/e2e/scenarios/ai-conformance/validators/accelerators/dra_support/dra_cuda_test.go

@@ -0,0 +1,38 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package dra_support
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/kops/tests/e2e/scenarios/ai-conformance/validators"
+)
+
+func TestDRAWorks(t *testing.T) {
+	h := validators.NewValidatorHarness(t)
+
+	h.Logf("# DRA functional tests")
+
+	h.Logf("## Listing device classes")
+	deviceClasses := h.ListDeviceClasses()
+	for _, deviceClass := range deviceClasses {
+		h.Logf("* %s", deviceClass.Name)
+	}
+}

tests/e2e/scenarios/ai-conformance/validators/harness.go

@@ -18,13 +18,22 @@ package validators
 
 import (
 	"context"
+	"os"
+	"path/filepath"
 	"testing"
+
+	"k8s.io/client-go/dynamic"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
 )
 
 type ValidatorHarness struct {
 	t *testing.T
 
 	output OutputSink
+
+	dynamicClient dynamic.Interface
+	restConfig    *rest.Config
 }
 
 func NewValidatorHarness(t *testing.T) *ValidatorHarness {
@@ -36,6 +45,22 @@ func NewValidatorHarness(t *testing.T) *ValidatorHarness {
 			h.t.Errorf("failed to close output: %v", err)
 		}
 	})
+
+	// use the current context in kubeconfig
+	kubeconfig := os.Getenv("KUBECONFIG")
+	if kubeconfig == "" {
+		home, err := os.UserHomeDir()
+		if err != nil {
+			h.Fatalf("failed to get user home directory: %v", err)
+		}
+		kubeconfig = filepath.Join(home, ".kube", "config")
+	}
+	restConfig, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
+	if err != nil {
+		h.Fatalf("failed to build get kubeconfig: %v", err)
+	}
+	h.restConfig = restConfig
+
 	return h
 }
 

tests/e2e/scenarios/ai-conformance/validators/kube.go

@@ -0,0 +1,62 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package validators
+
+import (
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/client-go/dynamic"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+func (h *ValidatorHarness) DynamicClient() dynamic.Interface {
+	if h.dynamicClient == nil {
+		dynamicClient, err := dynamic.NewForConfig(h.restConfig)
+		if err != nil {
+			h.Fatalf("failed to create dynamic client: %v", err)
+		}
+		h.dynamicClient = dynamicClient
+	}
+	return h.dynamicClient
+}
+
+type DeviceClass struct {
+	u *unstructured.Unstructured
+}
+
+func (d *DeviceClass) Name() string {
+	return d.u.GetName()
+}
+
+var deviceClassGVR = schema.GroupVersionResource{
+	Group:    "resource.k8s.io",
+	Version:  "v1",
+	Resource: "deviceclasses",
+}
+
+func (h *ValidatorHarness) ListDeviceClasses() []*DeviceClass {
+	objectList, err := h.DynamicClient().Resource(deviceClassGVR).List(h.Context(), metav1.ListOptions{})
+	if err != nil {
+		h.Fatalf("failed to list device classes: %v", err)
+	}
+	var out []*DeviceClass
+	for i := range objectList.Items {
+		out = append(out, &DeviceClass{u: &objectList.Items[i]})
+	}
+	return out
+}