test : Add E2E tests for Helm Install and Uninstall functionality

it/src/test/java/org/eclipse/jkube/integrationtests/springboot/helmconfig/HelmConfig.java

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+/**
+ * Copyright (c) 2019 Red Hat, Inc.
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at:
+ *
+ *     https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *   Red Hat, Inc. - initial API and implementation
+ */
+package org.eclipse.jkube.integrationtests.springboot.helmconfig;
+
+import io.fabric8.junit.jupiter.api.KubernetesTest;
+import io.fabric8.kubernetes.client.KubernetesClient;
+import org.eclipse.jkube.integrationtests.JKubeCase;
+import org.eclipse.jkube.integrationtests.maven.MavenCase;
+
+@KubernetesTest(createEphemeralNamespace = false)
+abstract class HelmConfig implements JKubeCase, MavenCase {
+  private static final String PROJECT_HELM = "projects-to-be-tested/maven/spring/helm-config";
+
+  private static KubernetesClient kubernetesClient;
+
+  @Override
+  public KubernetesClient getKubernetesClient() {
+    return kubernetesClient;
+  }
+
+  @Override
+  public String getProject() {
+    return PROJECT_HELM;
+  }
+}

it/src/test/java/org/eclipse/jkube/integrationtests/springboot/helmconfig/HelmConfigK8sITCase.java

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+/**
+ * Copyright (c) 2019 Red Hat, Inc.
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at:
+ *
+ *     https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *   Red Hat, Inc. - initial API and implementation
+ */
+package org.eclipse.jkube.integrationtests.springboot.helmconfig;
+
+import org.apache.maven.shared.invoker.InvocationResult;
+import org.eclipse.jkube.integrationtests.jupiter.api.DockerRegistry;
+import org.eclipse.jkube.integrationtests.jupiter.api.DockerRegistryHost;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.MethodOrderer;
+import org.junit.jupiter.api.Order;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.util.Properties;
+
+import static org.eclipse.jkube.integrationtests.Tags.KUBERNETES;
+import static org.eclipse.jkube.integrationtests.assertions.InvocationResultAssertion.assertInvocation;
+import static org.eclipse.jkube.integrationtests.assertions.YamlAssertion.yaml;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.aMapWithSize;
+import static org.hamcrest.Matchers.allOf;
+import static org.hamcrest.Matchers.anEmptyMap;
+import static org.hamcrest.Matchers.contains;
+import static org.hamcrest.Matchers.containsInAnyOrder;
+import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.hasEntry;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.not;
+
+@DockerRegistry(port = 5080)
+@Tag(KUBERNETES)
+@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
+class HelmConfigK8sITCase extends HelmConfig {
+
+  @DockerRegistryHost
+  protected String registry;
+
+  @Test
+  @Order(1)
+  @DisplayName("k8s:resource, no specified profile, should create default resource manifests")
+  void k8sResource() throws Exception {
+    // When
+    final InvocationResult invocationResult = maven("k8s:resource");
+    // Then
+    assertInvocation(invocationResult);
+  }
+
+  @Test
+  @Order(2)
+  @DisplayName("k8s:helm, should create Helm charts")
+  void k8sHelm() throws Exception {
+    // When
+    final InvocationResult invocationResult = maven("k8s:helm");
+    // Then
+    assertInvocation(invocationResult);
+    assertThat(new File(String.format("../%s/target/jkube/helm/the-chart-name/kubernetes/the-chart-name-1.0-KUBERNETES.tar", getProject()))
+      .exists(), equalTo(true));
+    final File helmDirectory = new File(
+      String.format("../%s/target/jkube/helm/the-chart-name/kubernetes", getProject()));
+    assertThat(new File(helmDirectory, "Chart.yaml"), yaml(allOf(
+      aMapWithSize(10),
+      hasEntry("apiVersion", "v1"),
+      hasEntry("name", "the-chart-name"),
+      hasEntry("version", "1.0-KUBERNETES"),
+      hasEntry("description", "Description different to that in the pom.xml"),
+      hasEntry("home", "https://www.home.example.com"),
+      hasEntry("engine", "v8")
+    )));
+    assertThat(new File(helmDirectory, "Chart.yaml"), yaml(allOf(
+      hasEntry(is("sources"), contains("https://source.1.example.com")),
+      hasEntry(is("keywords"), containsInAnyOrder("key", "words", "comma", "separated"))
+    )));
+    assertThat(new File(helmDirectory, "Chart.yaml"), yaml(
+      hasEntry(is("maintainers"), contains(allOf(
+        hasEntry("name", "Mr. Ed"),
+        hasEntry("email", "[email protected]")
+      )))
+    ));
+    assertThat(new File(helmDirectory, "values.yaml"), yaml(anEmptyMap()));
+    assertThat(new File(helmDirectory, "templates/spring-boot-helm-config-deployment.yaml"), yaml(not(anEmptyMap())));
+    assertThat(new File(helmDirectory, "templates/spring-boot-helm-config-service.yaml"), yaml(not(anEmptyMap())));
+  }
+
+  @Test
+  @Order(3)
+  @DisplayName("k8s:helm-push, should push the charts")
+  void k8sHelmPush() throws Exception {
+    // Given
+    final Properties properties = properties(
+      "jkube.helm.stableRepository.type", "OCI",
+      "jkube.helm.stableRepository.name", "docker",
+      "jkube.helm.stableRepository.url", "oci://" + registry,
+      "jkube.helm.stableRepository.username", "ignored",
+      "jkube.helm.stableRepository.password", "ignored"
+    );
+    // When
+    final InvocationResult invocationResult = maven("k8s:helm-push", properties);
+    // Then
+    assertInvocation(invocationResult);
+    assertThat(httpGet("http://" + registry + "/v2/the-chart-name/tags/list").body(),
+      containsString("{\"name\":\"the-chart-name\",\"tags\":[\"1.0-KUBERNETES\"]}"));
+  }
+
+  @Test
+  @DisplayName("k8s:helm-uninstall, no release present, display error message")
+  void k8sHelmUninstall_whenNoReleasePresent_thenErrorMessageDisplayed() throws Exception {
+    // Given
+    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+    // When
+    maven("k8s:helm-uninstall", properties("jkube.helm.release.name", "spring-boot-helm-config-k8s-does-not-exist"), byteArrayOutputStream);
+    // Then
+    assertThat(byteArrayOutputStream.toString(), allOf(
+      containsString("helm-uninstall failed"),
+      containsString("uninstall: Release not loaded: spring-boot-helm-config-k8s-does-not-exist: release: not found")
+    ));
+  }
+
+  @Test
+  @Order(4)
+  @DisplayName("k8s:helm-install, should install the charts")
+  void k8sHelmInstall() throws Exception {
+    // Given
+    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+    // When
+    maven("k8s:helm-install", properties("jkube.helm.release.name", "spring-boot-helm-config-k8s"), byteArrayOutputStream);
+    // Then
+    assertThat(byteArrayOutputStream.toString(),
+      allOf(containsString("Installing Helm Chart the-chart-name 1.0-KUBERNETES"),
+        containsString("NAME : spring-boot-helm-config-k8s"),
+        containsString("NAMESPACE : "),
+        containsString("STATUS : deployed"),
+        containsString("REVISION : 1")));
+  }
+
+  @Test
+  @Order(5)
+  @DisplayName("k8s:helm-uninstall, should uninstall the charts")
+  void k8sHelmUninstall() throws Exception {
+    // Given
+    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+    // When
+    maven("k8s:helm-uninstall", properties("jkube.helm.release.name", "spring-boot-helm-config-k8s"), byteArrayOutputStream);
+    // Then
+    assertThat(byteArrayOutputStream.toString(),
+      allOf(containsString("Uninstalling Helm Chart the-chart-name 1.0-KUBERNETES"),
+        containsString("release \"spring-boot-helm-config-k8s\" uninstalled")));
+  }
+}