Add tests for EventHandler

Change-Id: Ie7056afb17fab53a615749111cfb7bf480b31e91
diff --git a/src/test/java/com/googlesource/gerrit/plugins/webhooks/EventHandlerTest.java b/src/test/java/com/googlesource/gerrit/plugins/webhooks/EventHandlerTest.java
new file mode 100644
index 0000000..e9965db
--- /dev/null
+++ b/src/test/java/com/googlesource/gerrit/plugins/webhooks/EventHandlerTest.java
@@ -0,0 +1,125 @@
+// Copyright (C) 2017 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.webhooks;
+
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyZeroInteractions;
+import static org.mockito.Mockito.when;
+
+import org.eclipse.jgit.lib.Config;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.reviewdb.client.Project.NameKey;
+import com.google.gerrit.server.config.PluginConfigFactory;
+import com.google.gerrit.server.events.Event;
+import com.google.gerrit.server.events.ProjectCreatedEvent;
+import com.google.gerrit.server.events.RefUpdatedEvent;
+import com.google.gerrit.server.project.NoSuchProjectException;
+
+@RunWith(MockitoJUnitRunner.class)
+public class EventHandlerTest {
+
+  private static final String PROJECT = "p";
+  private static final Project.NameKey PROJECT_NAME = new Project.NameKey(PROJECT);
+  private static final String PLUGIN = "webhooks";
+  private static final String REMOTE = "remote";
+  private static final String FOO = "foo";
+  private static final String URL = "url";
+  private static final String FOO_URL = "foo-url";
+  private static final String EVENT = "event";
+
+  private static final ProjectCreatedEvent PROJECT_CREATED = new ProjectCreatedEvent() {
+    public NameKey getProjectNameKey() {
+      return PROJECT_NAME;
+    }
+  };
+
+  private static final RefUpdatedEvent REF_UPDATED = new RefUpdatedEvent() {
+    public NameKey getProjectNameKey() {
+      return PROJECT_NAME;
+    }
+  };
+
+  @Mock
+  private PluginConfigFactory configFactory;
+
+  @Mock
+  private PostTask.Factory taskFactory;
+
+  @Mock
+  private PostTask postTask;
+
+  private Config config = new Config();
+
+  private EventHandler eventHandler;
+
+  @Before
+  public void setup() throws NoSuchProjectException {
+    when(configFactory.getProjectPluginConfigWithInheritance(PROJECT_NAME, PLUGIN))
+        .thenReturn(config);
+    when(taskFactory.create(anyString(), anyString())).thenReturn(postTask);
+    eventHandler = new EventHandler(configFactory, PLUGIN, taskFactory);
+  }
+
+  @Test
+  public void remoteUrlUndefinedEventsNotPosted() {
+    eventHandler.onEvent(PROJECT_CREATED);
+    verifyZeroInteractions(postTask);
+  }
+
+  @Test
+  public void eventTypesNotSpecifiedAllEventsPosted() {
+    config.setString(REMOTE, FOO, URL, FOO_URL);
+
+    eventHandler.onEvent(PROJECT_CREATED);
+    eventHandler.onEvent(REF_UPDATED);
+    verify(postTask, times(2)).schedule();
+  }
+
+  @Test
+  public void specifiedEventTypesPosted() {
+    config.setString(REMOTE, FOO, URL, FOO_URL);
+    config.setString(REMOTE, FOO, EVENT, "project-created");
+
+    eventHandler.onEvent(PROJECT_CREATED);
+    verify(postTask, times(1)).schedule();
+  }
+
+  @Test
+  public void nonSpecifiedProjectEventTypesNotPosted() {
+    config.setString(REMOTE, FOO, URL, FOO_URL);
+    config.setString(REMOTE, FOO, EVENT, "project-created");
+
+    eventHandler.onEvent(REF_UPDATED);
+    verifyZeroInteractions(postTask);
+  }
+
+  @Test
+  public void nonProjectEventNotPosted() {
+    config.setString(REMOTE, FOO, URL, FOO_URL);
+
+    Event nonProjectEvent = new Event("non-project-event") {
+    };
+    eventHandler.onEvent(nonProjectEvent);
+    verifyZeroInteractions(postTask);
+  }
+}