VID-266 added stub server for testing

Change-Id: I39b8fca2df4c45123e2308142dfbb43c737f7707
Issue-ID: VID-266
Signed-off-by: Koblosz, Sandra <sandra.koblosz@nokia.com>

3 files changed, 369 insertions, 110 deletions

diff --git a/vid-app-common/src/main/java/org/onap/vid/scheduler/SchedulerRestInterface.java b/vid-app-common/src/main/java/org/onap/vid/scheduler/SchedulerRestInterface.java
index abd03f3e..9a7522b5 100644
--- a/vid-app-common/src/main/java/org/onap/vid/scheduler/SchedulerRestInterface.java
+++ b/vid-app-common/src/main/java/org/onap/vid/scheduler/SchedulerRestInterface.java
@@ -18,123 +18,134 @@ import javax.ws.rs.client.Client;
 import javax.ws.rs.core.MultivaluedHashMap;
 import javax.ws.rs.core.Response;
 import java.util.Collections;
+import java.util.function.Function;
 
 import static org.onap.vid.utils.Logging.REQUEST_ID_HEADER_KEY;
 
 @Service
 public class SchedulerRestInterface implements SchedulerRestInterfaceIfc {
 
-	private Client client = null;
-
-	@Autowired
-	HttpsAuthClient httpsAuthClient;
-
-	private MultivaluedHashMap<String, Object> commonHeaders;
-	
-	/** The logger. */
-	private static EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(SchedulerRestInterface.class);
-	final private static EELFLogger outgoingRequestsLogger = Logging.getRequestsLogger("scheduler");
-	
-	public void initRestClient() {
-		logger.info("Starting to initialize rest client ");
-		
-		final String username;
-		final String password;
-		
+    private Client client = null;
+    private Function<String, String> propertyGetter;
+
+    @Autowired
+    HttpsAuthClient httpsAuthClient;
+
+    private MultivaluedHashMap<String, Object> commonHeaders;
+
+    /** The logger. */
+    private static EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(SchedulerRestInterface.class);
+    final private static EELFLogger outgoingRequestsLogger = Logging.getRequestsLogger("scheduler");
+
+    @Autowired
+    public SchedulerRestInterface(){
+        this.propertyGetter = SystemProperties::getProperty;
+    }
+
+    public SchedulerRestInterface(Function<String, String> propertyGetter){
+        this.propertyGetter = propertyGetter;
+    }
+
+    public void initRestClient() {
+        logger.info("Starting to initialize rest client ");
+
+        final String username;
+        final String password;
+
 		/*Setting user name based on properties*/
-		String retrievedUsername = SystemProperties.getProperty(SchedulerProperties.SCHEDULER_USER_NAME_VAL);
-		if(retrievedUsername.isEmpty()) {
-			username = "";
-		} else {
-			username = retrievedUsername;
-		}
-		
+        String retrievedUsername = propertyGetter.apply(SchedulerProperties.SCHEDULER_USER_NAME_VAL);
+        if(retrievedUsername.isEmpty()) {
+            username = "";
+        } else {
+            username = retrievedUsername;
+        }
+
 		/*Setting password based on properties*/
-		String retrievedPassword = SystemProperties.getProperty(SchedulerProperties.SCHEDULER_PASSWORD_VAL);
-		if(retrievedPassword.isEmpty()) {
-			password = "";
-		} else {
-			if (retrievedPassword.contains("OBF:")) {
-				password = Password.deobfuscate(retrievedPassword);
-			} else {
-				password = retrievedPassword;
-			}
-		}
-		
-		String authString = username + ":" + password;
-				
-		byte[] authEncBytes = Base64.encodeBase64(authString.getBytes());
-		String authStringEnc = new String(authEncBytes);
-
-		commonHeaders = new MultivaluedHashMap<String, Object> ();
-		commonHeaders.put("Authorization", Collections.singletonList("Basic " + authStringEnc));
-					
-		try {
-			if ( !username.isEmpty() ) { 
-				client = httpsAuthClient.getClient(HttpClientMode.WITHOUT_KEYSTORE);
-			}
-			else {
-				
-				client = HttpBasicClient.getClient();
-			}
-		} catch (Exception e) {
-			logger.error(" <== Unable to initialize rest client ", e);
-		}
-
-		logger.info("\t<== Client Initialized \n");
-	}
-		
-	public <T> void Get (T t, String sourceId, String path, org.onap.vid.scheduler.RestObject<T> restObject ) {
-		
-		String methodName = "Get";
-		String url = SystemProperties.getProperty(SchedulerProperties.SCHEDULER_SERVER_URL_VAL) + path;
-		initRestClient();
-		Logging.logRequest(outgoingRequestsLogger, HttpMethod.GET, url);
-		final Response cres = client.target(url)
-			 .request()
-	         .accept("application/json")
-	         .headers(commonHeaders)
-			 .header(REQUEST_ID_HEADER_KEY, Logging.extractOrGenerateRequestId())
-			 .get();
-		Logging.logResponse(outgoingRequestsLogger, HttpMethod.GET, url, cres);
-		int status = cres.getStatus();
-		restObject.setStatusCode (status);
-		
-		if (status == 200) {
-			 t = (T) cres.readEntity(t.getClass());
-			 restObject.set(t);
-			
-		 } else {
-		     throw new GenericUncheckedException(methodName + " with status="+ status + ", url= " + url );
-		 }
-
-	}
-
-	public <T> void Delete(T t, String sourceID, String path, org.onap.vid.scheduler.RestObject<T> restObject) {
-
-		initRestClient();
-
-		String url = SystemProperties.getProperty(SchedulerProperties.SCHEDULER_SERVER_URL_VAL) + path;
-		Logging.logRequest(outgoingRequestsLogger, HttpMethod.DELETE, url);
-		Response cres = client.target(url)
-				.request()
-				.accept("application/json")
-				.headers(commonHeaders)
-				.header(REQUEST_ID_HEADER_KEY, Logging.extractOrGenerateRequestId())
-				.delete();
-		Logging.logResponse(outgoingRequestsLogger, HttpMethod.DELETE, url, cres);
-
-		int status = cres.getStatus();
-		restObject.setStatusCode(status);
-
-		t = (T) cres.readEntity(t.getClass());
-		restObject.set(t);
-
-	}
-
-	public <T> T getInstance(Class<T> clazz) throws IllegalAccessException, InstantiationException
-	{
-		return clazz.newInstance();
-	}
+        String retrievedPassword = propertyGetter.apply(SchedulerProperties.SCHEDULER_PASSWORD_VAL);
+        if(retrievedPassword.isEmpty()) {
+            password = "";
+        } else {
+            if (retrievedPassword.contains("OBF:")) {
+                password = Password.deobfuscate(retrievedPassword);
+            } else {
+                password = retrievedPassword;
+            }
+        }
+
+        String authString = username + ":" + password;
+
+        byte[] authEncBytes = Base64.encodeBase64(authString.getBytes());
+        String authStringEnc = new String(authEncBytes);
+
+        commonHeaders = new MultivaluedHashMap<> ();
+        commonHeaders.put("Authorization", Collections.singletonList("Basic " + authStringEnc));
+
+        try {
+            if ( !username.isEmpty() ) {
+                client = httpsAuthClient.getClient(HttpClientMode.WITHOUT_KEYSTORE);
+            }
+            else {
+
+                client = HttpBasicClient.getClient();
+            }
+        } catch (Exception e) {
+            logger.error(" <== Unable to initialize rest client ", e);
+        }
+
+        logger.info("\t<== Client Initialized \n");
+    }
+
+    public <T> void Get (T t, String sourceId, String path, org.onap.vid.scheduler.RestObject<T> restObject ) {
+
+        String methodName = "Get";
+        String url = String.format("%s%s",propertyGetter.apply(SchedulerProperties.SCHEDULER_SERVER_URL_VAL), path);
+        initRestClient();
+        Logging.logRequest(outgoingRequestsLogger, HttpMethod.GET, url);
+        final Response cres = client.target(url)
+                .request()
+                .accept("application/json")
+                .headers(commonHeaders)
+                .header(REQUEST_ID_HEADER_KEY, Logging.extractOrGenerateRequestId())
+                .get();
+        Logging.logResponse(outgoingRequestsLogger, HttpMethod.GET, url, cres);
+        int status = cres.getStatus();
+        restObject.setStatusCode (status);
+
+        if (status == 200) {
+            t = (T) cres.readEntity(t.getClass());
+            restObject.set(t);
+
+        } else {
+            throw new GenericUncheckedException(String.format("%s with status=%d, url=%s", methodName, status,url));
+        }
+
+    }
+
+    public <T> void Delete(T t, String sourceID, String path, org.onap.vid.scheduler.RestObject<T> restObject) {
+
+        initRestClient();
+
+        String url = String.format( "%s%s",propertyGetter.apply(SchedulerProperties.SCHEDULER_SERVER_URL_VAL), path);
+        Logging.logRequest(outgoingRequestsLogger, HttpMethod.DELETE, url);
+        Response cres = client.target(url)
+                .request()
+                .accept("application/json")
+                .headers(commonHeaders)
+                .header(REQUEST_ID_HEADER_KEY, Logging.extractOrGenerateRequestId())
+                .delete();
+        Logging.logResponse(outgoingRequestsLogger, HttpMethod.DELETE, url, cres);
+
+        int status = cres.getStatus();
+        restObject.setStatusCode(status);
+
+        t = (T) cres.readEntity(t.getClass());
+        restObject.set(t);
+
+    }
+
+    public <T> T getInstance(Class<T> clazz) throws IllegalAccessException, InstantiationException
+    {
+        return clazz.newInstance();
+    }
 
 }
diff --git a/vid-app-common/src/test/java/org/onap/vid/scheduler/SchedulerRestInterfaceTest.java b/vid-app-common/src/test/java/org/onap/vid/scheduler/SchedulerRestInterfaceTest.java
new file mode 100644
index 00000000..7becf8b7
--- /dev/null
+++ b/vid-app-common/src/test/java/org/onap/vid/scheduler/SchedulerRestInterfaceTest.java
@@ -0,0 +1,158 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * VID
+ * ================================================================================
+ * Copyright (C) 2018 Nokia Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+
+package org.onap.vid.scheduler;
+
+import com.xebialabs.restito.semantics.Action;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.*;
+import org.mockito.runners.MockitoJUnitRunner;
+import org.onap.vid.aai.util.HttpClientMode;
+import org.onap.vid.aai.util.HttpsAuthClient;
+import org.onap.vid.testUtils.StubServerUtil;
+import org.testng.annotations.BeforeMethod;
+
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.Invocation;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.MultivaluedHashMap;
+import javax.ws.rs.core.Response;
+import java.io.IOException;
+import java.security.GeneralSecurityException;
+import java.util.Collections;
+import java.util.function.Function;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+
+@RunWith(MockitoJUnitRunner.class)
+public class SchedulerRestInterfaceTest {
+
+    private static final String USR_PWD_AUTH_STRING = "c2FtcGxlOnBhUyR3MFJk";
+    private static final String APPLICATION_JSON = "application/json";
+    private static MultivaluedHashMap<String, Object> commonHeaders = new MultivaluedHashMap<>();
+    private static StubServerUtil serverUtil;
+    private String sampleBaseUrl;
+    @Mock
+    private HttpsAuthClient mockedHttpsAuthClient;
+    @Mock
+    private Client mockedClient;
+    @Mock
+    private Invocation.Builder mockedBuilder;
+    @Mock
+    private Response mockedResponse;
+    @Mock
+    private WebTarget mockedWebTarget;
+
+    @Mock
+    private Function<String, String> propertyGetter;
+
+    @InjectMocks
+    private SchedulerRestInterface schedulerInterface = new SchedulerRestInterface();
+
+    @BeforeClass
+    public static void setUpClass() {
+        serverUtil = new StubServerUtil();
+        serverUtil.runServer();
+        commonHeaders.put("Authorization", Collections.singletonList("Basic " + USR_PWD_AUTH_STRING));
+    }
+
+    @AfterClass
+    public static void tearDownClass() {
+        serverUtil.stopServer();
+    }
+
+    @BeforeMethod
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        sampleBaseUrl = serverUtil.constructTargetUrl("http", "");
+    }
+
+    @Test
+    public void testShouldGetOKWhenStringIsExpected() throws IOException, GeneralSecurityException {
+        String sampleSourceId = "AAI";
+        RestObject<String> sampleRestObj = new RestObject<>();
+        String resultHolder = "";
+
+        String responseContent = "sample : SAMPLE RESULT STRING";
+        Mockito.doReturn(mockedClient).when(mockedHttpsAuthClient).getClient(HttpClientMode.WITHOUT_KEYSTORE);
+        Mockito.doReturn("sample").when(propertyGetter).apply(SchedulerProperties.SCHEDULER_USER_NAME_VAL);
+        Mockito.doReturn("paS$w0Rd").when(propertyGetter).apply(SchedulerProperties.SCHEDULER_PASSWORD_VAL);
+        Mockito.doReturn(sampleBaseUrl).when(propertyGetter).apply(SchedulerProperties.SCHEDULER_SERVER_URL_VAL);
+        Mockito.doReturn(200).when(mockedResponse).getStatus();
+        Mockito.doReturn(responseContent).when(mockedResponse).readEntity(String.class);
+        Mockito.doReturn(mockedResponse).when(mockedBuilder).get();
+        Mockito.when(mockedBuilder.header(Matchers.any(), Matchers.any())).thenReturn(mockedBuilder);
+        Mockito.doReturn(mockedBuilder).when(mockedBuilder).headers(commonHeaders);
+        Mockito.doReturn(mockedBuilder).when(mockedBuilder).accept(APPLICATION_JSON);
+        Mockito.doReturn(mockedBuilder).when(mockedWebTarget).request();
+        Mockito.doReturn(mockedWebTarget).when(mockedClient).target(sampleBaseUrl + "test");
+
+        serverUtil.prepareGetCall("/test", responseContent, Action.ok());
+
+        schedulerInterface.Get(resultHolder, sampleSourceId, "test", sampleRestObj);
+
+        assertResponseData(sampleRestObj, responseContent, 200);
+    }
+
+
+    @Test
+    public void testShouldDeleteSuccessfully() throws IOException, GeneralSecurityException {
+        String sampleTargetUrl = serverUtil.constructTargetUrl("http", "");
+        String sampleSourceId = "AAI";
+        RestObject<String> sampleRestObj = new RestObject<>();
+        String resultHolder = "";
+
+        String responseContent = "sample : SAMPLE RESULT STRING";
+        Mockito.doReturn(mockedClient).when(mockedHttpsAuthClient).getClient(HttpClientMode.WITHOUT_KEYSTORE);
+        Mockito.doReturn("sample").when(propertyGetter).apply(SchedulerProperties.SCHEDULER_USER_NAME_VAL);
+        Mockito.doReturn("paS$w0Rd").when(propertyGetter).apply(SchedulerProperties.SCHEDULER_PASSWORD_VAL);
+        Mockito.doReturn(sampleTargetUrl).when(propertyGetter).apply(SchedulerProperties.SCHEDULER_SERVER_URL_VAL);
+        Mockito.doReturn(200).when(mockedResponse).getStatus();
+        Mockito.doReturn(responseContent).when(mockedResponse).readEntity(String.class);
+        Mockito.doReturn(mockedResponse).when(mockedBuilder).delete();
+        Mockito.when(mockedBuilder.header(Matchers.any(), Matchers.any())).thenReturn(mockedBuilder);
+        Mockito.doReturn(mockedBuilder).when(mockedBuilder).headers(commonHeaders);
+        Mockito.doReturn(mockedBuilder).when(mockedBuilder).accept(APPLICATION_JSON);
+        Mockito.doReturn(mockedBuilder).when(mockedWebTarget).request();
+        Mockito.doReturn(mockedWebTarget).when(mockedClient).target(sampleTargetUrl + "test");
+
+        serverUtil.prepareDeleteCall("/test", responseContent, Action.ok());
+
+        schedulerInterface.Delete(resultHolder, sampleSourceId, "test", sampleRestObj);
+
+        assertResponseData(sampleRestObj, responseContent, 200);
+    }
+
+
+    private void assertResponseData(RestObject<String> sampleRestObj, String expectedResponse, int expectedStatusCode) {
+
+        assertThat(sampleRestObj.getStatusCode()).isEqualTo(expectedStatusCode);
+        assertThat(sampleRestObj.get()).isInstanceOf(String.class).isEqualTo(expectedResponse);
+        assertThat(sampleRestObj.getUUID()).isNull();
+
+    }
+
+}
diff --git a/vid-app-common/src/test/java/org/onap/vid/testUtils/StubServerUtil.java b/vid-app-common/src/test/java/org/onap/vid/testUtils/StubServerUtil.java
new file mode 100644
index 00000000..e84655f7
--- /dev/null
+++ b/vid-app-common/src/test/java/org/onap/vid/testUtils/StubServerUtil.java
@@ -0,0 +1,90 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * VID
+ * ================================================================================
+ * Copyright (C) 2018 Nokia Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.vid.testUtils;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.xebialabs.restito.semantics.Action;
+import com.xebialabs.restito.semantics.Condition;
+import com.xebialabs.restito.server.StubServer;
+
+import static com.xebialabs.restito.builder.stub.StubHttp.whenHttp;
+import static com.xebialabs.restito.semantics.Action.contentType;
+import static com.xebialabs.restito.semantics.Action.stringContent;
+
+public class StubServerUtil {
+
+    private static final String APPLICATION_JSON = "application/json";
+    private ObjectMapper objectMapper;
+
+
+    private StubServer stubServer;
+
+    public StubServerUtil() {
+        this.objectMapper = new ObjectMapper();
+        this.stubServer = new StubServer();
+    }
+
+
+    public void runServer() {
+        stubServer.run();
+    }
+
+    public void stopServer() {
+        stubServer.stop();
+    }
+
+
+    public String constructTargetUrl(String protocol, String relativePath) {
+        return String.format("%s://localhost:%s/%s", protocol, stubServer.getPort(), relativePath);
+    }
+
+    public void prepareGetCall(String path, Object returnObj, Action expectedAction) throws JsonProcessingException {
+        whenHttp(stubServer)
+                .match(Condition.get(path))
+                .then(expectedAction, jsonContent(returnObj), contentType(APPLICATION_JSON));
+    }
+
+    public void prepareDeleteCall(String path, Object returnObj, Action expectedAction) throws JsonProcessingException {
+        whenHttp(stubServer)
+                .match(Condition.delete(path))
+                .then(expectedAction, jsonContent(returnObj), contentType(APPLICATION_JSON));
+    }
+
+    public void preparePostCall(String path, Object returnObj, Action expectedAction) throws JsonProcessingException {
+        whenHttp(stubServer)
+                .match(Condition.post(path),
+                        Condition.withPostBodyContaining(objectMapper.writeValueAsString(returnObj)))
+                .then(expectedAction, jsonContent(returnObj), contentType(APPLICATION_JSON));
+    }
+
+    public void preparePutCall(String path, Object returnObj, Action expectedStatus) throws JsonProcessingException {
+        whenHttp(stubServer)
+                .match(Condition.put(path),
+                        Condition.withPostBodyContaining(objectMapper.writeValueAsString(returnObj)))
+                .then(expectedStatus, jsonContent(returnObj), contentType(APPLICATION_JSON));
+    }
+
+    private Action jsonContent(Object returnObj) throws JsonProcessingException {
+        return stringContent(objectMapper.writeValueAsString(returnObj));
+    }
+
+}