FINAL unit test covergae commit

Change-Id: Ieb9e9d49931c253b89026ed4884edbdc8d6c6024
Issue-ID: DMAAP-1226
Signed-off-by: efiacor <fiachra.corcoran@est.tech>

2 files changed, 205 insertions, 17 deletions

diff --git a/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/ProxyServlet.java b/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/ProxyServlet.java
index 75423602..e47f9fbb 100755
--- a/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/ProxyServlet.java
+++ b/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/ProxyServlet.java
@@ -24,6 +24,8 @@
 
 package org.onap.dmaap.datarouter.provisioning;
 
+import static org.onap.dmaap.datarouter.provisioning.utils.HttpServletUtils.sendResponseError;
+
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
@@ -54,8 +56,6 @@ import org.apache.http.impl.client.DefaultHttpClient;
 import org.onap.dmaap.datarouter.provisioning.utils.DB;
 import org.onap.dmaap.datarouter.provisioning.utils.URLUtilities;
 
-import static org.onap.dmaap.datarouter.provisioning.utils.HttpServletUtils.sendResponseError;
-
 /**
  * This class is the base class for those servlets that need to proxy their requests from the standby to active server.
  * Its methods perform the proxy function to the active server. If the active server is not reachable, a 503
@@ -96,7 +96,7 @@ public class ProxyServlet extends BaseServlet {
             // We are connecting with the node name, but the certificate will have the CNAME
             // So we need to accept a non-matching certificate name
             SSLSocketFactory socketFactory = new SSLSocketFactory(keyStore,
-                props.getProperty(Main.KEYSTORE_PASS_PROPERTY), trustStore);
+                    props.getProperty(Main.KEYSTORE_PASS_PROPERTY), trustStore);
             socketFactory.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
             sch = new Scheme("https", 443, socketFactory);
             inited = true;
@@ -125,7 +125,7 @@ public class ProxyServlet extends BaseServlet {
      * @param req the HTTP request
      * @return true or false
      */
-    protected boolean isProxyOK(final HttpServletRequest req) {
+    boolean isProxyOK(final HttpServletRequest req) {
         String t = req.getQueryString();
         if (t != null) {
             t = t.replaceAll("&", "&");
@@ -144,7 +144,7 @@ public class ProxyServlet extends BaseServlet {
      *
      * @return true if this server is the standby (and hence a proxy server).
      */
-    public boolean isProxyServer() {
+    boolean isProxyServer() {
         SynchronizerTask st = SynchronizerTask.getSynchronizer();
         return st.getPodState() == SynchronizerTask.STANDBY_POD;
     }
@@ -187,7 +187,7 @@ public class ProxyServlet extends BaseServlet {
      *
      * @return true if the proxy succeeded
      */
-    public boolean doGetWithFallback(HttpServletRequest req, HttpServletResponse resp) {
+    boolean doGetWithFallback(HttpServletRequest req, HttpServletResponse resp) {
         boolean rv = false;
         if (inited) {
             String url = buildUrl(req);
@@ -234,12 +234,8 @@ public class ProxyServlet extends BaseServlet {
 
                     // Copy request headers and request body
                     copyRequestHeaders(req, proxy);
-                    if ("POST".equals(method) || "PUT".equals(method)) {
-                        BasicHttpEntity body = new BasicHttpEntity();
-                        body.setContent(req.getInputStream());
-                        body.setContentLength(-1);    // -1 = unknown
-                        proxy.setEntity(body);
-                    }
+
+                    handlePutOrPost(req, method, proxy);
 
                     // Execute the request
                     HttpResponse pxyResponse = httpclient.execute(proxy);
@@ -263,6 +259,15 @@ public class ProxyServlet extends BaseServlet {
         }
     }
 
+    private void handlePutOrPost(HttpServletRequest req, String method, ProxyHttpRequest proxy) throws IOException {
+        if ("POST".equals(method) || "PUT".equals(method)) {
+            BasicHttpEntity body = new BasicHttpEntity();
+            body.setContent(req.getInputStream());
+            body.setContentLength(-1);    // -1 = unknown
+            proxy.setEntity(body);
+        }
+    }
+
     private String buildUrl(HttpServletRequest req) {
         StringBuilder sb = new StringBuilder("https://");
         sb.append(URLUtilities.getPeerPodName());
@@ -275,7 +280,6 @@ public class ProxyServlet extends BaseServlet {
     }
 
     private void copyRequestHeaders(HttpServletRequest from, HttpRequestBase to) {
-        @SuppressWarnings("unchecked")
         List<String> list = Collections.list(from.getHeaderNames());
         for (String name : list) {
             // Proxy code will add this one
@@ -285,7 +289,7 @@ public class ProxyServlet extends BaseServlet {
         }
     }
 
-    private void copyResponseHeaders(HttpResponse from, HttpServletResponse to) {
+    void copyResponseHeaders(HttpResponse from, HttpServletResponse to) {
         for (Header hdr : from.getAllHeaders()) {
             // Don't copy Date: our Jetty will add another Date header
             if (!"Date".equals(hdr.getName())) {
@@ -294,7 +298,7 @@ public class ProxyServlet extends BaseServlet {
         }
     }
 
-    private void copyEntityContent(HttpResponse pxyResponse, HttpServletResponse resp) {
+    void copyEntityContent(HttpResponse pxyResponse, HttpServletResponse resp) {
         HttpEntity entity = pxyResponse.getEntity();
         if (entity != null) {
             try (InputStream in = entity.getContent()) {
@@ -305,11 +309,11 @@ public class ProxyServlet extends BaseServlet {
         }
     }
 
-    public class ProxyHttpRequest extends HttpEntityEnclosingRequestBase {
+    public static class ProxyHttpRequest extends HttpEntityEnclosingRequestBase {
 
         private final String method;
 
-        public ProxyHttpRequest(final String method, final String uri) {
+        ProxyHttpRequest(final String method, final String uri) {
             super();
             this.method = method;
             setURI(URI.create(uri));
diff --git a/datarouter-prov/src/test/java/org/onap/dmaap/datarouter/provisioning/ProxyServletTest.java b/datarouter-prov/src/test/java/org/onap/dmaap/datarouter/provisioning/ProxyServletTest.java
new file mode 100644
index 00000000..a0442c13
--- /dev/null
+++ b/datarouter-prov/src/test/java/org/onap/dmaap/datarouter/provisioning/ProxyServletTest.java
@@ -0,0 +1,184 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Nordix Foundation.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.dmaap.datarouter.provisioning;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.mock;
+import static org.powermock.api.mockito.PowerMockito.when;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.List;
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+import javax.servlet.ServletConfig;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.apache.commons.lang3.reflect.FieldUtils;
+import org.apache.http.Header;
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.StatusLine;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpUriRequest;
+import org.apache.http.conn.scheme.Scheme;
+import org.apache.http.impl.client.DefaultHttpClient;
+import org.apache.http.message.BasicHeader;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.onap.dmaap.datarouter.provisioning.utils.URLUtilities;
+import org.powermock.api.mockito.PowerMockito;
+import org.powermock.core.classloader.annotations.PowerMockIgnore;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
+
+@RunWith(PowerMockRunner.class)
+@PowerMockIgnore("javax.net.ssl.*")
+@PrepareForTest({URLUtilities.class, BaseServlet.class, Scheme.class})
+public class ProxyServletTest {
+    private static ProxyServlet proxyServlet;
+    private static EntityManagerFactory emf;
+    private static EntityManager em;
+
+    @Mock
+    private DefaultHttpClient httpClient;
+    @Mock
+    private HttpServletRequest request;
+    @Mock
+    private HttpServletResponse servletResponse;
+    @Mock
+    private CloseableHttpResponse response;
+    @Mock
+    private StatusLine statusLine;
+
+    @BeforeClass
+    public static void init() {
+        emf = Persistence.createEntityManagerFactory("dr-unit-tests");
+        em = emf.createEntityManager();
+        System.setProperty(
+                "org.onap.dmaap.datarouter.provserver.properties",
+                "src/test/resources/h2Database.properties");
+    }
+
+    @AfterClass
+    public static void tearDownClass() {
+        em.clear();
+        em.close();
+        emf.close();
+    }
+
+    @Before
+    public void setUp() throws Exception {
+        proxyServlet = new ProxyServlet();
+        FieldUtils.writeDeclaredField(proxyServlet, "inited", true, true);
+
+        org.apache.http.conn.ssl.SSLSocketFactory sslSocketFactory = PowerMockito.mock(org.apache.http.conn.ssl.SSLSocketFactory.class);
+        Mockito.doNothing().when(sslSocketFactory).setHostnameVerifier(org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
+        Scheme scheme = new Scheme("http", 80, sslSocketFactory);
+        FieldUtils.writeDeclaredField(proxyServlet, "sch", scheme, true);
+
+        PowerMockito.mockStatic(BaseServlet.class);
+        PowerMockito.mockStatic(URLUtilities.class);
+        when(URLUtilities.getPeerPodName()).thenReturn("localhost");
+
+        SynchronizerTask synchronizerTask = SynchronizerTask.getSynchronizer();
+        FieldUtils.writeDeclaredField(synchronizerTask, "podState", 2, true);
+        FieldUtils.writeDeclaredStaticField(BaseServlet.class, "synctask", synchronizerTask, true);
+
+        proxyServlet.init(mock(ServletConfig.class));
+        setHeadersForValidRequest();
+        mockHttpClientForGetRequest();
+    }
+
+    @Test
+    public void Given_Request_Is_HTTP_POST_Exception_Is_Thrown() {
+        proxyServlet.doPost(request, servletResponse);
+    }
+
+    @Test
+    public void Given_Request_Is_HTTP_DELETE_Exception_Is_Thrown() {
+        proxyServlet.doDelete(request, servletResponse);
+    }
+
+    @Test
+    public void Given_Request_Is_HTTP_GET_Exception_Is_Thrown() {
+        proxyServlet.doGet(request, servletResponse);
+    }
+
+    @Test
+    public void Given_Request_Is_HTTP_PUT_Exception_Is_Thrown() {
+        proxyServlet.doPut(request, servletResponse);
+    }
+
+    @Test
+    public void Given_Request_Is_HTTP_GetWithFallBack_Exception_Is_Thrown() {
+        proxyServlet.doGetWithFallback(request, servletResponse);
+    }
+
+    @Test
+    public void Veirfy_Headers_Are_Copied() {
+        HttpResponse proxyResponse = PowerMockito.mock(HttpResponse.class);
+        Header[] headersArray = new Header[2];
+        headersArray[0] = new BasicHeader("cache-control", "public, max-age=86400");
+        headersArray[1] = new BasicHeader("content-type", "text/plain");
+        PowerMockito.when(proxyResponse.getAllHeaders()).thenReturn(headersArray);
+        proxyServlet.copyResponseHeaders(proxyResponse, servletResponse);
+    }
+
+    @Test
+    public void Veirfy_EntitiyContent_Copied() throws IOException {
+        HttpResponse proxyResponse = PowerMockito.mock(HttpResponse.class);
+        HttpEntity entity = PowerMockito.mock(HttpEntity.class);
+        PowerMockito.when(proxyResponse.getEntity()).thenReturn(entity);
+        PowerMockito.when(entity.getContent()).thenReturn(new ByteArrayInputStream("blah".getBytes()));
+        proxyServlet.copyEntityContent(proxyResponse, servletResponse);
+    }
+
+    private void setHeadersForValidRequest() {
+        List<String> headers = new ArrayList<>();
+        headers.add("Content-Type");
+        headers.add("X-DMAAP-DR-ON-BEHALF-OF");
+        headers.add("X-DMAAP-DR-META");
+        Enumeration<String> headerNames = Collections.enumeration(headers);
+        Mockito.when(request.getHeaderNames()).thenReturn(headerNames);
+        Enumeration<String> contentTypeHeader = Collections.enumeration(Collections.singletonList("text/plain"));
+        Enumeration<String> behalfHeader = Collections.enumeration(Collections.singletonList("User1"));
+        Enumeration<String> metaDataHeader = Collections.enumeration(Collections.singletonList("?#@><"));
+        Mockito.when(request.getHeaders("Content-Type")).thenReturn(contentTypeHeader);
+        Mockito.when(request.getHeaders("X-DMAAP-DR-ON-BEHALF-OF")).thenReturn(behalfHeader);
+        Mockito.when(request.getHeaders("X-DMAAP-DR-META")).thenReturn(metaDataHeader);
+    }
+
+    private void mockHttpClientForGetRequest() throws Exception {
+        PowerMockito.when(httpClient.execute(any(HttpUriRequest.class))).thenReturn(response);
+        Mockito.when(request.getRequestURI()).thenReturn("/api");
+        Mockito.when(response.getStatusLine()).thenReturn(statusLine);
+    }
+}