[ONOS-7492] Add unit test for openstack security group REST API

Change-Id: Ifd7b99afac9de0d0235fd6a4d74e5948656b92b6
diff --git a/apps/openstacknetworking/src/test/java/org/onosproject/openstacknetworking/web/OpenstackSecurityGroupRuleWebResourceTest.java b/apps/openstacknetworking/src/test/java/org/onosproject/openstacknetworking/web/OpenstackSecurityGroupRuleWebResourceTest.java
new file mode 100644
index 0000000..4ffafc1
--- /dev/null
+++ b/apps/openstacknetworking/src/test/java/org/onosproject/openstacknetworking/web/OpenstackSecurityGroupRuleWebResourceTest.java
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2018-present Open Networking 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.
+ */
+package org.onosproject.openstacknetworking.web;
+
+import org.glassfish.jersey.server.ResourceConfig;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.osgi.ServiceDirectory;
+import org.onlab.osgi.TestServiceDirectory;
+import org.onosproject.openstacknetworking.api.OpenstackSecurityGroupAdminService;
+import org.onosproject.rest.resources.ResourceTest;
+
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import java.io.InputStream;
+
+import static org.easymock.EasyMock.anyObject;
+import static org.easymock.EasyMock.anyString;
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.expectLastCall;
+import static org.easymock.EasyMock.replay;
+import static org.easymock.EasyMock.verify;
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Unit test for openstack security group rule REST API.
+ */
+public class OpenstackSecurityGroupRuleWebResourceTest extends ResourceTest {
+
+    final OpenstackSecurityGroupAdminService mockOpenstackSecurityGroupAdminService =
+            createMock(OpenstackSecurityGroupAdminService.class);
+    private static final String PATH = "security-group-rules";
+
+    /**
+     * Constructs an openstack security group rule test instance.
+     */
+    public OpenstackSecurityGroupRuleWebResourceTest() {
+        super(ResourceConfig.forApplicationClass(OpenstackNetworkingWebApplication.class));
+    }
+
+    /**
+     * Sets up the global values for all tests.
+     */
+    @Before
+    public void setUpTest() {
+        ServiceDirectory testDirectory =
+                new TestServiceDirectory()
+                        .add(OpenstackSecurityGroupAdminService.class,
+                                mockOpenstackSecurityGroupAdminService);
+        setServiceDirectory(testDirectory);
+    }
+
+    /**
+     * Tests the results of the REST API POST with creation operation.
+     */
+    @Test
+    public void testCreateSecurityGroupRulesWithCreationOperation() {
+        mockOpenstackSecurityGroupAdminService.createSecurityGroupRule(anyObject());
+        replay(mockOpenstackSecurityGroupAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = OpenstackNetworkWebResourceTest.class
+                .getResourceAsStream("openstack-security-group-rule.json");
+
+        Response response = wt.path(PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .post(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(201));
+
+        verify(mockOpenstackSecurityGroupAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API POST with incorrect input.
+     */
+    @Test
+    public void testCreateSecurityGroupRulesWithIncorrectInput() {
+        final WebTarget wt = target();
+        InputStream jsonStream = OpenstackSecurityGroupRuleWebResourceTest.class
+                .getResourceAsStream("dummy.json");
+
+        Response response = wt.path(PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .post(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(400));
+    }
+
+    /**
+     * Tests the results of the REST API POST with duplicated security group rule ID.
+     */
+    @Test
+    public void testCreateSecurityGroupRulesWithDuplicatedId() {
+        mockOpenstackSecurityGroupAdminService.createSecurityGroupRule(anyObject());
+        expectLastCall().andThrow(new IllegalArgumentException());
+        replay(mockOpenstackSecurityGroupAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = OpenstackNetworkWebResourceTest.class
+                .getResourceAsStream("openstack-security-group-rule.json");
+
+        Response response = wt.path(PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .post(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(400));
+
+        verify(mockOpenstackSecurityGroupAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API DELETE with deletion operation.
+     */
+    @Test
+    public void testDeleteSecurityGroupRuleWithDeletionOperation() {
+        mockOpenstackSecurityGroupAdminService.removeSecurityGroupRule(anyString());
+        replay(mockOpenstackSecurityGroupAdminService);
+
+        final WebTarget wt = target();
+
+        Response response = wt.path(PATH + "/2bc0accf-312e-429a-956e-e4407625eb62")
+                .request(MediaType.APPLICATION_JSON_TYPE)
+                .delete();
+        final int status = response.getStatus();
+
+        assertThat(status, is(204));
+
+        verify(mockOpenstackSecurityGroupAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API DELETE with non-existing security group rule ID.
+     */
+    @Test
+    public void testDeleteSecurityGroupRuleWithNonexistId() {
+        mockOpenstackSecurityGroupAdminService.removeSecurityGroupRule(anyString());
+        expectLastCall().andThrow(new IllegalArgumentException());
+        replay(mockOpenstackSecurityGroupAdminService);
+
+        final WebTarget wt = target();
+
+        Response response = wt.path(PATH + "/non-exist-id")
+                .request(MediaType.APPLICATION_JSON_TYPE)
+                .delete();
+        final int status = response.getStatus();
+
+        assertThat(status, is(400));
+
+        verify(mockOpenstackSecurityGroupAdminService);
+    }
+}