content: // Licensed to the Apache Software Foundation (ASF) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The ASF licenses this file
  // to you 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 org.apache.cloudstack.cloudian.client;
  
  import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
  import static com.github.tomakehurst.wiremock.client.WireMock.containing;
  import static com.github.tomakehurst.wiremock.client.WireMock.delete;
  import static com.github.tomakehurst.wiremock.client.WireMock.deleteRequestedFor;
  import static com.github.tomakehurst.wiremock.client.WireMock.equalTo;
  import static com.github.tomakehurst.wiremock.client.WireMock.get;
  import static com.github.tomakehurst.wiremock.client.WireMock.getRequestedFor;
  import static com.github.tomakehurst.wiremock.client.WireMock.post;
  import static com.github.tomakehurst.wiremock.client.WireMock.postRequestedFor;
  import static com.github.tomakehurst.wiremock.client.WireMock.put;
  import static com.github.tomakehurst.wiremock.client.WireMock.putRequestedFor;
  import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
  import static com.github.tomakehurst.wiremock.client.WireMock.urlPathMatching;
  import static com.github.tomakehurst.wiremock.client.WireMock.verify;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.http.HttpEntity;
  import org.apache.http.HttpResponse;
  
  import org.apache.cloudstack.api.ApiErrorCode;
  import org.apache.cloudstack.api.ServerApiException;
  import org.apache.cloudstack.cloudian.client.CloudianUserBucketUsage.CloudianBucketUsage;
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.mockito.junit.MockitoJUnitRunner;
  
  import com.cloud.utils.exception.CloudRuntimeException;
  import com.github.tomakehurst.wiremock.client.BasicCredentials;
  import com.github.tomakehurst.wiremock.junit.WireMockRule;
  
  @RunWith(MockitoJUnitRunner.class)
  public class CloudianClientTest {
      private final int port = 14333;
      private final int timeout = 2;
      private final String adminUsername = "admin";
      private final String adminPassword = "public";
      private CloudianClient client;
  
      @Rule
      public WireMockRule wireMockRule = new WireMockRule(port);
  
      @Before
      public void setUp() throws Exception {
          client = new CloudianClient("localhost", port, "http", adminUsername, adminPassword, false, timeout);
      }
  
      private CloudianUser getTestUser() {
          final CloudianUser user = new CloudianUser();
          user.setActive(true);
          user.setUserId("someUserId");
          user.setGroupId("someGroupId");
          user.setUserType(CloudianUser.USER);
          user.setFullName("John Doe");
          return user;
      }
  
      private CloudianGroup getTestGroup() {
          final CloudianGroup group = new CloudianGroup();
          group.setActive(true);
          group.setGroupId("someGroupId");
          group.setGroupName("someGroupName");
          return group;
      }
  
      ////////////////////////////////////////////////////////
      //////////////// General API tests /////////////////////
      ////////////////////////////////////////////////////////
  
      @Test(expected = CloudRuntimeException.class)
      public void testRequestTimeout() {
          wireMockRule.stubFor(get(urlEqualTo("/group/list"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(200)
                          .withFixedDelay(2 * timeout * 1000)
                          .withBody("")));
          client.listGroups();
      }
  
      @Test
      public void testBasicAuth() {
          wireMockRule.stubFor(get(urlEqualTo("/group/list"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody("[]")));
          client.listGroups();
          verify(getRequestedFor(urlEqualTo("/group/list"))
                  .withBasicAuth(new BasicCredentials(adminUsername, adminPassword)));
      }
  
      @Test(expected = ServerApiException.class)
      public void testBasicAuthFailure() {
          wireMockRule.stubFor(get(urlPathMatching("/user"))
                  .willReturn(aResponse()
                          .withStatus(401)
                          .withBody("")));
          client.listUser("someUserId", "somegGroupId");
      }
  
      @Test
      public void getNonEmptyContentStreamEmpty() {
          InputStream emptyStream = new ByteArrayInputStream(new byte[]{});
          HttpEntity entity = mock(HttpEntity.class);
          HttpResponse response = mock(HttpResponse.class);
          when(response.getEntity()).thenReturn(entity);
          try {
                  when(entity.getContent()).thenReturn(emptyStream);
                  Assert.assertNull(client.getNonEmptyContentStream(response));
          } catch (IOException e) {
                  Assert.fail("Should not be any exception here");
          }
      }
  
      @Test
      public void getNonEmptyContentStreamWithContent() {
          InputStream nonEmptyStream = new ByteArrayInputStream(new byte[]{9, 8});
          HttpEntity entity = mock(HttpEntity.class);
          HttpResponse response = mock(HttpResponse.class);
          when(response.getEntity()).thenReturn(entity);
          try {
                  when(entity.getContent()).thenReturn(nonEmptyStream);
                  InputStream is = client.getNonEmptyContentStream(response);
                  Assert.assertNotNull(is);
                  Assert.assertEquals(9, is.read());
                  Assert.assertEquals(8, is.read());
                  Assert.assertEquals(-1, is.read());
          } catch (IOException e) {
                  Assert.fail("Should not be any exception here");
          }
      }
  
      /////////////////////////////////////////////////////
      //////////////// System API tests ///////////////////
      /////////////////////////////////////////////////////
  
      @Test
      public void getServerVersion() {
          final String expect = "8.1 Compiled: 2023-11-11 16:30";
          wireMockRule.stubFor(get(urlEqualTo("/system/version"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody(expect)));
  
          String version = client.getServerVersion();
          Assert.assertEquals(expect, version);
      }
  
      @Test
      public void getUserBucketUsagesBadUsageBlankGroup() {
          ServerApiException thrown = Assert.assertThrows(ServerApiException.class, () -> client.getUserBucketUsages(null, null, null));
          Assert.assertNotNull(thrown);
          Assert.assertEquals(ApiErrorCode.PARAM_ERROR, thrown.getErrorCode());
      }
  
      @Test
      public void getUserBucketUsagesBadUsageBlankUserWithBucket() {
          ServerApiException thrown = Assert.assertThrows(ServerApiException.class, () -> client.getUserBucketUsages("group", "", "bucket"));
          Assert.assertNotNull(thrown);
          Assert.assertEquals(ApiErrorCode.PARAM_ERROR, thrown.getErrorCode());
      }
  
      @Test
      public void getUserBucketUsagesEmptyGroup() {
          wireMockRule.stubFor(get(urlEqualTo("/system/bucketusage?groupId=mygroup"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(200)
                          .withBody("[]")));
          List<CloudianUserBucketUsage> bucketUsages = client.getUserBucketUsages("mygroup", null, null);
          Assert.assertEquals(0, bucketUsages.size());
      }
  
      @Test(expected = CloudRuntimeException.class)
      public void getUserBucketUsagesNoSuchGroup() {
          // no group, no user, no bucket etc are all 400
          wireMockRule.stubFor(get(urlEqualTo("/system/bucketusage?groupId=mygroup"))
                  .willReturn(aResponse()
                          .withStatus(400)
                          .withBody("")));
          client.getUserBucketUsages("mygroup", null, null);
          Assert.fail("The request should throw an exception");
      }
  
      @Test
      public void getUserBucketUsagesUserNoBuckets() {
          wireMockRule.stubFor(get(urlEqualTo("/system/bucketusage?groupId=mygroup&userId=u1"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(200)
                          .withBody("[{\"userId\": \"u1\", \"buckets\": []}]")));
          List<CloudianUserBucketUsage> bucketUsages = client.getUserBucketUsages("mygroup", "u1", null);
          Assert.assertEquals(1, bucketUsages.size());
          CloudianUserBucketUsage u1 = bucketUsages.get(0);
          Assert.assertEquals("u1", u1.getUserId());
          Assert.assertEquals(0, u1.getBuckets().size());
      }
  
      @Test
      public void getUserBucketUsagesForBucket() {
          wireMockRule.stubFor(get(urlEqualTo("/system/bucketusage?groupId=mygroup&userId=u1&bucket=b1"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(200)
                          .withBody("[{\"userId\": \"u1\", \"buckets\": [{\"bucketName\":\"b1\",\"objectCount\":1,\"byteCount\":5,\"policyName\":\"p1\"}]}]")));
          List<CloudianUserBucketUsage> bucketUsages = client.getUserBucketUsages("mygroup", "u1", "b1");
          Assert.assertEquals(1, bucketUsages.size());
          CloudianUserBucketUsage u1 = bucketUsages.get(0);
          Assert.assertEquals("u1", u1.getUserId());
          Assert.assertEquals(1, u1.getBuckets().size());
          CloudianBucketUsage cbu = u1.getBuckets().get(0);
          Assert.assertEquals("b1", cbu.getBucketName());
          Assert.assertEquals(5L, cbu.getByteCount().longValue());
          Assert.assertEquals(1L, cbu.getObjectCount().longValue());
          Assert.assertEquals("p1", cbu.getPolicyName());
      }
  
      @Test
      public void getUserBucketUsagesOneUserTwoBuckets() {
          CloudianUserBucketUsage expect_u1 = new CloudianUserBucketUsage();
          expect_u1.setUserId("u1");
          CloudianBucketUsage b1 = new CloudianBucketUsage();
          b1.setBucketName("b1");
          b1.setByteCount(123L);
          b1.setObjectCount(456L);
          b1.setPolicyName("pname");
          CloudianBucketUsage b2 = new CloudianBucketUsage();
          b2.setBucketName("b2");
          b2.setByteCount(789L);
          b2.setObjectCount(0L);
          b2.setPolicyName("pname2");
          List<CloudianBucketUsage> buckets = new ArrayList<CloudianBucketUsage>();
          buckets.add(b1);
          buckets.add(b2);
          expect_u1.setBuckets(buckets);
          int expect_size = buckets.size();
  
          int bucket_count = 0;
          StringBuilder sb = new StringBuilder();
          sb.append("[{\"userId\": \"u1\", \"buckets\": [");
          for (CloudianBucketUsage b : buckets) {
                  sb.append("{\"bucketName\": \"");
                  sb.append(b.getBucketName());
                  sb.append("\", \"byteCount\": ");
                  sb.append(b.getByteCount());
                  sb.append(", \"objectCount\": ");
                  sb.append(b.getObjectCount());
                  sb.append(", \"policyName\": \"");
                  sb.append(b.getPolicyName());
                  sb.append("\"}");
                  if (++bucket_count < expect_size) {
                          sb.append(",");
                  }
          }
          sb.append("]}]");
          wireMockRule.stubFor(get(urlEqualTo("/system/bucketusage?groupId=mygroup&userId=u1"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(200)
                          .withBody(sb.toString())));
          List<CloudianUserBucketUsage> bucketUsages = client.getUserBucketUsages("mygroup", "u1", null);
          Assert.assertEquals(1, bucketUsages.size());
          CloudianUserBucketUsage u1 = bucketUsages.get(0);
          Assert.assertEquals("u1", u1.getUserId());
          Assert.assertEquals(expect_size, u1.getBuckets().size());
          for (int i = 0; i < expect_size; i++) {
                  CloudianBucketUsage actual = u1.getBuckets().get(i);
                  CloudianBucketUsage expected = buckets.get(i);
                  Assert.assertEquals(expected.getBucketName(), actual.getBucketName());
                  Assert.assertEquals(expected.getByteCount(), actual.getByteCount());
                  Assert.assertEquals(expected.getObjectCount(), actual.getObjectCount());
                  Assert.assertEquals(expected.getPolicyName(), actual.getPolicyName());
          }
      }
  
      @Test
      public void getUserBucketUsagesTwoUsers() {
          CloudianUserBucketUsage expect_u1 = new CloudianUserBucketUsage();
          expect_u1.setUserId("u1");
          CloudianBucketUsage b1 = new CloudianBucketUsage();
          b1.setBucketName("b1");
          b1.setByteCount(123L);
          b1.setObjectCount(456L);
          b1.setPolicyName("pname");
          CloudianBucketUsage b2 = new CloudianBucketUsage();
          b2.setBucketName("b2");
          b2.setByteCount(789L);
          b2.setObjectCount(0L);
          b2.setPolicyName("pname2");
          List<CloudianBucketUsage> buckets = new ArrayList<CloudianBucketUsage>();
          buckets.add(b1);
          buckets.add(b2);
          expect_u1.setBuckets(buckets);
          int expect_size = buckets.size();
  
          int bucket_count = 0;
          StringBuilder sb = new StringBuilder();
          sb.append("[{\"userId\": \"u1\", \"buckets\": [");
          for (CloudianBucketUsage b : buckets) {
                  sb.append("{\"bucketName\": \"");
                  sb.append(b.getBucketName());
                  sb.append("\", \"byteCount\": ");
                  sb.append(b.getByteCount());
                  sb.append(", \"objectCount\": ");
                  sb.append(b.getObjectCount());
                  sb.append(", \"policyName\": \"");
                  sb.append(b.getPolicyName());
                  sb.append("\"}");
                  if (++bucket_count < expect_size) {
                          sb.append(",");
                  }
          }
          sb.append("]}, {\"userId\": \"u2\", \"buckets\": []}]");
          wireMockRule.stubFor(get(urlEqualTo("/system/bucketusage?groupId=mygroup"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(200)
                          .withBody(sb.toString())));
          List<CloudianUserBucketUsage> bucketUsages = client.getUserBucketUsages("mygroup", null, null);
          Assert.assertEquals(2, bucketUsages.size());
          CloudianUserBucketUsage u1 = bucketUsages.get(0);
          Assert.assertEquals("u1", u1.getUserId());
          Assert.assertEquals(expect_size, u1.getBuckets().size());
          for (int i = 0; i < expect_size; i++) {
                  CloudianBucketUsage actual = u1.getBuckets().get(i);
                  CloudianBucketUsage expected = buckets.get(i);
                  Assert.assertEquals(expected.getBucketName(), actual.getBucketName());
                  Assert.assertEquals(expected.getByteCount(), actual.getByteCount());
                  Assert.assertEquals(expected.getObjectCount(), actual.getObjectCount());
                  Assert.assertEquals(expected.getPolicyName(), actual.getPolicyName());
          }
          // 2nd user has 0 buckets
          CloudianUserBucketUsage u2 = bucketUsages.get(1);
          Assert.assertEquals("u2", u2.getUserId());
          Assert.assertEquals(0, u2.getBuckets().size());
      }
  
      /////////////////////////////////////////////////////
      //////////////// User API tests /////////////////////
      /////////////////////////////////////////////////////
  
      @Test
      public void addUserAccount() {
          wireMockRule.stubFor(put(urlEqualTo("/user"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody("")));
  
          final CloudianUser user = getTestUser();
          boolean result = client.addUser(user);
          Assert.assertTrue(result);
          verify(putRequestedFor(urlEqualTo("/user"))
                  .withRequestBody(containing("userId\":\"" + user.getUserId()))
                  .withHeader("content-type", equalTo("application/json")));
      }
  
      @Test
      public void addUserAccountFail() {
          wireMockRule.stubFor(put(urlEqualTo("/user"))
                  .willReturn(aResponse()
                          .withStatus(400)
                          .withBody("")));
  
          final CloudianUser user = getTestUser();
          boolean result = client.addUser(user);
          Assert.assertFalse(result);
      }
  
      @Test
      public void listUserAccount() {
          final String userId = "someUser";
          final String groupId = "someGroup";
          wireMockRule.stubFor(get(urlPathMatching("/user?.*"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withBody("{\"userId\":\"someUser\",\"userType\":\"User\",\"fullName\":\"John Doe (jdoe)\",\"emailAddr\":\"j@doe.com\",\"address1\":null,\"address2\":null,\"city\":null,\"state\":null,\"zip\":null,\"country\":null,\"phone\":null,\"groupId\":\"someGroup\",\"website\":null,\"active\":\"true\",\"canonicalUserId\":\"b3940886468689d375ebf8747b151c37\",\"ldapEnabled\":false}")));
  
          final CloudianUser user = client.listUser(userId, groupId);
          Assert.assertEquals(user.getActive(), true);
          Assert.assertEquals(user.getUserId(), userId);
          Assert.assertEquals(user.getGroupId(), groupId);
          Assert.assertEquals(user.getUserType(), "User");
      }
  
      @Test
      public void listUserAccountNotFound() {
          wireMockRule.stubFor(get(urlPathMatching("/user?.*"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(204) // 204 not found
                          .withBody("")));
  
          final CloudianUser user = client.listUser("abc", "xyz");
          Assert.assertNull(user);
      }
  
      @Test(expected = ServerApiException.class)
      public void listUserAccountFail() {
          wireMockRule.stubFor(get(urlPathMatching("/user?.*"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withBody("")));
  
          client.listUser("abc", "xyz");
      }
  
      @Test
      public void listUserAccounts() {
          final String groupId = "someGroup";
          wireMockRule.stubFor(get(urlPathMatching("/user/list?.*"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withBody("[{\"userId\":\"someUser\",\"userType\":\"User\",\"fullName\":\"John Doe (jdoe)\",\"emailAddr\":\"j@doe.com\",\"address1\":null,\"address2\":null,\"city\":null,\"state\":null,\"zip\":null,\"country\":null,\"phone\":null,\"groupId\":\"someGroup\",\"website\":null,\"active\":\"true\",\"canonicalUserId\":\"b3940886468689d375ebf8747b151c37\",\"ldapEnabled\":false}]")));
  
          final List<CloudianUser> users = client.listUsers(groupId);
          Assert.assertEquals(users.size(), 1);
          Assert.assertEquals(users.get(0).getActive(), true);
          Assert.assertEquals(users.get(0).getGroupId(), groupId);
      }
  
      @Test
      public void listUserAccountsEmptyList() {
          // empty body with 200 is returned if either:
          // 1. the group is unknown (ie. there is no not found case)
          // 2. the group contains no users
          wireMockRule.stubFor(get(urlPathMatching("/user/list"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withBody("")));
          Assert.assertEquals(0, client.listUsers("someGroup").size());
      }
  
      @Test(expected = ServerApiException.class)
      public void listUserAccountsFail() {
          wireMockRule.stubFor(get(urlPathMatching("/user/list?.*"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(204)  // bad protocol response
                          .withBody("")));
  
          client.listUsers("xyz");
      }
  
      @Test
      public void updateUserAccount() {
          wireMockRule.stubFor(post(urlEqualTo("/user"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody("")));
  
          final CloudianUser user = getTestUser();
          boolean result = client.updateUser(user);
          Assert.assertTrue(result);
          verify(postRequestedFor(urlEqualTo("/user"))
                  .withRequestBody(containing("userId\":\"" + user.getUserId()))
                  .withHeader("content-type", equalTo("application/json")));
      }
  
      @Test
      public void updateUserAccountFail() {
          wireMockRule.stubFor(post(urlEqualTo("/user"))
                  .willReturn(aResponse()
                          .withStatus(400)
                          .withBody("")));
  
          boolean result = client.updateUser(getTestUser());
          Assert.assertFalse(result);
      }
  
      @Test
      public void removeUserAccount() {
          wireMockRule.stubFor(delete(urlPathMatching("/user.*"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody("")));
          final CloudianUser user = getTestUser();
          boolean result = client.removeUser(user.getUserId(), user.getGroupId());
          Assert.assertTrue(result);
          verify(deleteRequestedFor(urlPathMatching("/user.*"))
                  .withQueryParam("userId", equalTo(user.getUserId())));
      }
  
      @Test
      public void removeUserAccountFail() {
          wireMockRule.stubFor(delete(urlPathMatching("/user.*"))
                  .willReturn(aResponse()
                          .withStatus(400)
                          .withBody("")));
          final CloudianUser user = getTestUser();
          boolean result = client.removeUser(user.getUserId(), user.getGroupId());
          Assert.assertFalse(result);
      }
  
      @Test
      public void createCredential() {
          final String expected_ak = "28d945de2a2623fc9483";
          final String expected_sk = "j2OrPGHF69hp3YsZHRHOCWdAQDabppsBtD7kttr9";
          final long expected_createDate = 1502285593100L;
  
          final String json = String.format("{\"accessKey\": \"%s\", \"active\": true, \"createDate\": 1502285593100, \"expireDate\": null, \"secretKey\": \"%s\"}", expected_ak, expected_sk);
          wireMockRule.stubFor(put(urlPathMatching("/user/credentials.*"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody(json)));
  
          CloudianCredential credential = client.createCredential("u1", "g1");
          Assert.assertEquals(expected_ak, credential.getAccessKey());
          Assert.assertEquals(expected_sk, credential.getSecretKey());
          Assert.assertEquals(true, credential.getActive());
          Assert.assertEquals(expected_createDate, credential.getCreateDate().getTime());
          Assert.assertNull(credential.getExpireDate());
      }
  
      @Test(expected = ServerApiException.class)
      public void createCredentialNoSuchUser() {
          wireMockRule.stubFor(put(urlPathMatching("/user/credentials.*"))
                  .willReturn(aResponse()
                          .withStatus(400)
                          .withBody("")));
          client.createCredential("u1", "g1");
      }
  
      @Test(expected = ServerApiException.class)
      public void createCredentialMaxCredentials() {
          wireMockRule.stubFor(put(urlPathMatching("/user/credentials.*"))
                  .willReturn(aResponse()
                          .withStatus(403)
                          .withBody("")));
          client.createCredential("u1", "g1");
      }
  
      @Test(expected = ServerApiException.class)
      public void createCredentialBadMissingResponse() {
          wireMockRule.stubFor(put(urlPathMatching("/user/credentials.*"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody("")));  // 200 should return a credential
          client.createCredential("u1", "g1");
      }
  
      @Test
      public void listCredentials() {
          final String expected_ak = "28d945de2a2623fc9483";
          final String expected_sk = "j2OrPGHF69hp3YsZHRHOCWdAQDabppsBtD7kttr9";
  
          final String json = String.format("[{\"accessKey\": \"%s\", \"active\": true, \"createDate\": 1502285593100, \"expireDate\": null, \"secretKey\": \"%s\"}]", expected_ak, expected_sk);
          wireMockRule.stubFor(get(urlPathMatching("/user/credentials/list.*"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody(json)));
  
          List<CloudianCredential> credentials = client.listCredentials("u1", "g1");
          Assert.assertEquals(1, credentials.size());
          Assert.assertEquals(expected_ak, credentials.get(0).getAccessKey());
      }
  
      @Test
      public void listCredentialsMany() {
          final String expected_ak = "28d945de2a2623fc9483";
          final String expected_sk = "j2OrPGHF69hp3YsZHRHOCWdAQDabppsBtD7kttr9";
          final int expected_size = 3;
          StringBuilder sb = new StringBuilder();
          sb.append("[");
          for (int i = 0; i < expected_size; i++) {
                  sb.append(String.format("{\"accessKey\": \"%s-%d\", \"active\": true, \"createDate\": 1502285593100, \"expireDate\": null, \"secretKey\": \"%s-%d\"}", expected_ak, i, expected_sk, i));
                  if (i + 1 < expected_size) {
                          sb.append(",");
                  }
          }
          sb.append("]");
          String json = sb.toString();
          wireMockRule.stubFor(get(urlPathMatching("/user/credentials/list.*"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody(json)));
  
          List<CloudianCredential> credentials = client.listCredentials("u1", "g1");
          Assert.assertEquals(expected_size, credentials.size());
          Assert.assertEquals(expected_ak + "-2", credentials.get(2).getAccessKey());
      }
  
      @Test
      public void listCredentialsEmptyList() {
          wireMockRule.stubFor(get(urlPathMatching("/user/credentials/list.*"))
                  .willReturn(aResponse()
                          .withStatus(204)  // 204 is empty list for credentials
                          .withBody("")));
  
          List<CloudianCredential> credentials = client.listCredentials("u1", "g1");
          Assert.assertEquals(0, credentials.size());
      }
  
      @Test(expected = ServerApiException.class)
      public void listCredentialsNoSuchUser() {
          wireMockRule.stubFor(get(urlPathMatching("/user/credentials/list.*"))
                  .willReturn(aResponse()
                          .withStatus(400)  // No such user case
                          .withBody("")));
  
          client.listCredentials("u1", "g1");
      }
  
      @Test(expected = ServerApiException.class)
      public void listCredentialsBad200EmptyBody() {
          wireMockRule.stubFor(get(urlPathMatching("/user/credentials/list.*"))
                  .willReturn(aResponse()
                          .withStatus(200)  // Bad protocol. should be 204 if empty
                          .withBody("")));
  
          client.listCredentials("u1", "g1");
      }
  
      //////////////////////////////////////////////////////
      //////////////// Group API tests /////////////////////
      //////////////////////////////////////////////////////
  
      @Test
      public void addGroup() {
          wireMockRule.stubFor(put(urlEqualTo("/group"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody("")));
  
          final CloudianGroup group = getTestGroup();
          boolean result = client.addGroup(group);
          Assert.assertTrue(result);
          verify(putRequestedFor(urlEqualTo("/group"))
                  .withRequestBody(containing("groupId\":\"someGroupId"))
                  .withHeader("content-type", equalTo("application/json")));
      }
  
      @Test
      public void addGroupFail() throws Exception {
          wireMockRule.stubFor(put(urlEqualTo("/group"))
                  .willReturn(aResponse()
                          .withStatus(400)
                          .withBody("")));
  
          final CloudianGroup group = getTestGroup();
          boolean result = client.addGroup(group);
          Assert.assertFalse(result);
      }
  
      @Test
      public void listGroup() {
          final String groupId = "someGroup";
          wireMockRule.stubFor(get(urlPathMatching("/group.*"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withBody("{\"groupId\":\"someGroup\",\"groupName\":\"/someDomain\",\"ldapGroup\":null,\"active\":\"true\",\"ldapEnabled\":false,\"ldapServerURL\":null,\"ldapUserDNTemplate\":null,\"ldapSearch\":null,\"ldapSearchUserBase\":null,\"ldapMatchAttribute\":null}")));
  
          final CloudianGroup group = client.listGroup(groupId);
          Assert.assertEquals(group.getActive(), true);
          Assert.assertEquals(group.getGroupId(), groupId);
      }
  
      @Test
      public void listGroupNotFound() {
          wireMockRule.stubFor(get(urlPathMatching("/group.*"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(204) // group not found
                          .withBody("")));
          Assert.assertNull(client.listGroup("someGroup"));
      }
  
      @Test(expected = ServerApiException.class)
      public void listGroupFail() {
          // Returning 200 with an empty body is not expected behaviour
          wireMockRule.stubFor(get(urlPathMatching("/group.*"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withBody("")));
  
          client.listGroup("xyz");
      }
  
      @Test
      public void listGroups() {
          final String groupId = "someGroup";
          wireMockRule.stubFor(get(urlEqualTo("/group/list"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withBody("[{\"groupId\":\"someGroup\",\"groupName\":\"/someDomain\",\"ldapGroup\":null,\"active\":\"true\",\"ldapEnabled\":false,\"ldapServerURL\":null,\"ldapUserDNTemplate\":null,\"ldapSearch\":null,\"ldapSearchUserBase\":null,\"ldapMatchAttribute\":null}]")));
  
          final List<CloudianGroup> groups = client.listGroups();
          Assert.assertEquals(groups.size(), 1);
          Assert.assertEquals(groups.get(0).getActive(), true);
          Assert.assertEquals(groups.get(0).getGroupId(), groupId);
      }
  
      @Test
      public void listGroupsEmptyList() {
          wireMockRule.stubFor(get(urlEqualTo("/group/list"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withBody("")));
  
          final List<CloudianGroup> groups = client.listGroups();
          Assert.assertEquals(0, groups.size());
      }
  
      @Test(expected = ServerApiException.class)
      public void listGroupsBad204Response() {
          wireMockRule.stubFor(get(urlEqualTo("/group/list"))
                  .willReturn(aResponse()
                          .withHeader("content-type", "application/json")
                          .withStatus(204)  // bad response. should never be 204
                          .withBody("")));
          client.listGroups();
      }
  
      @Test
      public void updateGroup() {
          wireMockRule.stubFor(post(urlEqualTo("/group"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody("")));
  
          final CloudianGroup group = getTestGroup();
          boolean result = client.updateGroup(group);
          Assert.assertTrue(result);
          verify(postRequestedFor(urlEqualTo("/group"))
                  .withRequestBody(containing("groupId\":\"" + group.getGroupId()))
                  .withHeader("content-type", equalTo("application/json")));
      }
  
      @Test
      public void updateGroupFail() {
          wireMockRule.stubFor(post(urlEqualTo("/group"))
                  .willReturn(aResponse()
                          .withStatus(400)
                          .withBody("")));
  
          boolean result = client.updateGroup(getTestGroup());
          Assert.assertFalse(result);
      }
  
      @Test
      public void removeGroup() {
          wireMockRule.stubFor(delete(urlPathMatching("/group.*"))
                  .willReturn(aResponse()
                          .withStatus(200)
                          .withBody("")));
          final CloudianGroup group = getTestGroup();
          boolean result = client.removeGroup(group.getGroupId());
          Assert.assertTrue(result);
          verify(deleteRequestedFor(urlPathMatching("/group.*"))
                  .withQueryParam("groupId", equalTo(group.getGroupId())));
      }
  
      @Test
      public void removeGroupFail() {
          wireMockRule.stubFor(delete(urlPathMatching("/group.*"))
                  .willReturn(aResponse()
                          .withStatus(400)
                          .withBody("")));
          final CloudianGroup group = getTestGroup();
          boolean result = client.removeGroup(group.getGroupId());
          Assert.assertFalse(result);
      }
  }
  