correction JENKINS-15474 : does not add the same Cause type multiple …

…times

src/main/java/org/jenkinsci/plugins/buildtriggerbadge/RunListenerImpl.java

@@ -1,12 +1,17 @@
 package org.jenkinsci.plugins.buildtriggerbadge;
 
 import hudson.Extension;
+import hudson.Plugin;
+import hudson.PluginWrapper;
 import hudson.model.AbstractBuild;
 import hudson.model.Cause;
 import hudson.model.TaskListener;
 import hudson.model.listeners.RunListener;
 
+import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 import jenkins.model.Jenkins;
 
@@ -17,19 +22,26 @@
  */
 @Extension
 public class RunListenerImpl extends RunListener<AbstractBuild> {
+
 	public RunListenerImpl() {
 		super(AbstractBuild.class);
 	}
-
+	
 	@Override
 	public void onStarted(AbstractBuild build, TaskListener listener) {
 		BuildTriggerBadgePlugin plugin = Jenkins.getInstance().getPlugin(BuildTriggerBadgePlugin.class);
 		if(plugin.isActivated()) {
+			Set<Class<? extends Cause>> causeClasses =  new HashSet<Class<? extends Cause>>();
 			List<Cause> causes = build.getCauses();
 			for (Cause cause : causes) {
-				build.addAction(new BuildTriggerBadgeAction(cause));
+				// filter causes by its Class type
+				if(!causeClasses.contains(cause.getClass())) {
+					causeClasses.add(cause.getClass());
+					build.addAction(new BuildTriggerBadgeAction(cause));
+				}
 			}
 		}
 		super.onStarted(build, listener);
 	}
+
 }

src/test/java/org/jenkinsci/plugins/buildtriggerbadge/RunListenerImplTest.java

@@ -0,0 +1,32 @@
+package org.jenkinsci.plugins.buildtriggerbadge;
+
+import hudson.model.FreeStyleBuild;
+import hudson.model.FreeStyleProject;
+import hudson.triggers.SCMTrigger.SCMTriggerCause;
+
+import java.io.IOException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+
+import org.jvnet.hudson.test.Bug;
+import org.jvnet.hudson.test.HudsonTestCase;
+
+/**
+ * Tests for {@link RunListenerImpl}
+ * @author Michael Pailloncy
+ */
+public class RunListenerImplTest extends HudsonTestCase {
+
+	@Bug(15474)
+	public void testSameIconMultipleTimesCorrection() throws IOException, InterruptedException, ExecutionException{
+		FreeStyleProject p = createFreeStyleProject();
+		Future<FreeStyleBuild> futureBuild = p.scheduleBuild2(20, new SCMTriggerCause("scm change 1"));
+		assertFalse(p.scheduleBuild(new SCMTriggerCause("scm change 2")));
+		assertFalse(p.scheduleBuild(new SCMTriggerCause("scm change 3")));
+		assertFalse(p.scheduleBuild(new SCMTriggerCause("scm change 4")));
+		assertFalse(p.scheduleBuild(new SCMTriggerCause("scm change 5")));
+		FreeStyleBuild build = futureBuild.get();
+		// there should be only one badge action here
+		assertEquals(1, build.getBadgeActions().size());
+	}
+}