KubernetesMockServerTest.java

/**
 * Copyright (C) 2015 Red Hat, Inc.
 *
 * 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.fabric8.kubernetes.client.mock;

import io.fabric8.kubernetes.api.model.ConfigMapBuilder;
import io.fabric8.kubernetes.api.model.Namespaced;
import io.fabric8.kubernetes.api.model.Pod;
import io.fabric8.kubernetes.api.model.apiextensions.v1.CustomResourceDefinition;
import io.fabric8.kubernetes.client.CustomResource;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClientException;
import io.fabric8.kubernetes.client.VersionInfo;
import io.fabric8.kubernetes.client.dsl.base.CustomResourceDefinitionContext;
import io.fabric8.kubernetes.client.mock.crd.AnimalSpec;
import io.fabric8.kubernetes.client.mock.crd.AnimalStatus;
import io.fabric8.kubernetes.client.server.mock.EnableKubernetesMockClient;
import io.fabric8.kubernetes.client.server.mock.KubernetesMockServer;
import io.fabric8.kubernetes.model.annotation.Group;
import io.fabric8.kubernetes.model.annotation.Version;
import io.fabric8.openshift.api.model.Route;
import io.fabric8.openshift.client.OpenShiftClient;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

@EnableKubernetesMockClient(crud = true)
class KubernetesMockServerTest {

  KubernetesClient client;
  KubernetesMockServer server;

  @Test
  void testReset() {
    client.configMaps().create(new ConfigMapBuilder().withNewMetadata().withName("x").endMetadata().build());
    VersionInfo info = client.getKubernetesVersion();
    assertEquals("0", info.getMajor());

    server.reset();

    info = client.getKubernetesVersion();
    assertEquals("0", info.getMajor());
    assertNull(client.configMaps().withName("x").get());
  }

  @Test
  void testOpenShiftSupport() {
    server.setUnsupported("openshift.io");
    assertFalse(client.isAdaptable(OpenShiftClient.class));
    assertFalse(client.adapt(OpenShiftClient.class).isSupported());
    assertFalse(client.supports(Route.class));
    assertTrue(client.supports(Pod.class));
    server.reset();
    assertTrue(client.adapt(OpenShiftClient.class).isSupported());
  }

  @Version("v1")
  @Group("otherjungle.example.com")
  public static class Animal extends CustomResource<AnimalSpec, AnimalStatus> implements Namespaced {
  }

  @Test
  void testCustomResourceSupportFromContext() {
    assertThrows(KubernetesClientException.class,
        () -> client.genericKubernetesResources("otherjungle.example.com/v1", "Animal"));

    server.expectCustomResource(CustomResourceDefinitionContext.fromCustomResourceType(Animal.class));

    // the generic call is guaranteed to succeed
    assertEquals(0, client.genericKubernetesResources("otherjungle.example.com/v1", "Animal").list().getItems().size());
    assertEquals(1, client.getApiResources("otherjungle.example.com/v1").getResources().size());

    server.reset();
    // even though we reset, a second call would succeed do to the client side resource context caching
    // assertThrows(KubernetesClientException.class, () -> client.genericKubernetesResources("jungle.example.com/v1", "Animal"));
    assertEquals(0, client.getApiResources("otherjungle.example.com/v1").getResources().size());
  }

  @Test
  void testCustomResourceSupportFromCrd() {
    CustomResourceDefinition crd = CustomResourceDefinitionContext.v1CRDFromCustomResourceType(Animal.class).build();

    assertEquals(0, client.getApiResources("otherjungle.example.com/v1").getResources().size());

    client.resource(crd).create();

    assertEquals(1, client.getApiResources("otherjungle.example.com/v1").getResources().size());

    server.reset();

    assertEquals(0, client.getApiResources("otherjungle.example.com/v1").getResources().size());
  }

}