Add ProtoClientTest e2e test for protocol buffer client

Co-authored-by: brendandburns <[email protected]>

Author: Copilot

e2e/src/test/java/io/kubernetes/client/e2e/basic/ProtoClientTest.java

@@ -0,0 +1,80 @@
+/*
+Copyright 2024 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 io.kubernetes.client.e2e.basic;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import io.kubernetes.client.ProtoClient;
+import io.kubernetes.client.ProtoClient.ObjectOrStatus;
+import io.kubernetes.client.openapi.ApiClient;
+import io.kubernetes.client.proto.Meta.ObjectMeta;
+import io.kubernetes.client.proto.V1.Namespace;
+import io.kubernetes.client.proto.V1.NamespaceList;
+import io.kubernetes.client.util.ClientBuilder;
+import org.junit.jupiter.api.Test;
+
+class ProtoClientTest {
+
+	@Test
+	void createListGetAndDeleteNamespace() throws Exception {
+		ApiClient client = ClientBuilder.defaultClient();
+		ProtoClient protoClient = new ProtoClient(client);
+
+		// Create a namespace using protocol buffers
+		Namespace namespace = Namespace.newBuilder()
+				.setMetadata(ObjectMeta.newBuilder().setName("e2e-proto-test").build())
+				.build();
+
+		ObjectOrStatus<Namespace> createResult = protoClient.create(
+				namespace,
+				"/api/v1/namespaces",
+				"v1",
+				"Namespace");
+
+		assertThat(createResult.object).isNotNull();
+		assertThat(createResult.object.getMetadata().getName()).isEqualTo("e2e-proto-test");
+		assertThat(createResult.status).isNull();
+
+		// List namespaces using protocol buffers
+		ObjectOrStatus<NamespaceList> listResult = protoClient.list(
+				NamespaceList.newBuilder(),
+				"/api/v1/namespaces");
+
+		assertThat(listResult.object).isNotNull();
+		assertThat(listResult.object.getItemsCount()).isGreaterThan(0);
+		assertThat(listResult.status).isNull();
+
+		// Verify our namespace is in the list
+		boolean found = listResult.object.getItemsList().stream()
+				.anyMatch(ns -> ns.getMetadata().getName().equals("e2e-proto-test"));
+		assertThat(found).isTrue();
+
+		// Get the specific namespace using protocol buffers
+		ObjectOrStatus<Namespace> getResult = protoClient.get(
+				Namespace.newBuilder(),
+				"/api/v1/namespaces/e2e-proto-test");
+
+		assertThat(getResult.object).isNotNull();
+		assertThat(getResult.object.getMetadata().getName()).isEqualTo("e2e-proto-test");
+		assertThat(getResult.status).isNull();
+
+		// Delete the namespace using protocol buffers
+		ObjectOrStatus<Namespace> deleteResult = protoClient.delete(
+				Namespace.newBuilder(),
+				"/api/v1/namespaces/e2e-proto-test");
+
+		assertThat(deleteResult).isNotNull();
+		// Either we get the namespace object back or a status
+		assertThat(deleteResult.object != null || deleteResult.status != null).isTrue();
+	}
+}