add test case for branch filter

Author: chenz85

src/test/java/org/jenkinsci/plugins/gogs/GogsWebHookTest.java

@@ -25,6 +25,7 @@
 import java.io.PrintWriter;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertSame;
 import static org.junit.Assert.fail;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
@@ -232,6 +233,33 @@ public void whenUriDoesNotContainUrlNameMustReturnError() throws Exception {
         log.info("Test succeeded.");
     }
 
+    @Test
+    public void whenJobBranchNotMatchMustReturnError() throws Exception {
+        String[][] test_vals = {
+            {null, "master", "true"},
+            {null, "dev", "true"},
+            {"", "master", "true"},
+            {"", "dev", "true"},
+            {"*", "master", "true"},
+            {"*", "dev", "true"},
+            {"dev", "master", "false"},
+            {"dev", "dev", "true"},
+            {"master", "master", "true"},
+            {"master", "dev", "false"},
+        };
+
+        for (int i = 0; i < test_vals.length; ++i) {
+            String filter = test_vals[i][0];
+            String ref = test_vals[i][1];
+            boolean ret = Boolean.parseBoolean(test_vals[i][2]);
+
+            GogsProjectProperty property = new GogsProjectProperty(null, false, filter);
+            assertSame(String.format("branch filter check failed for [%s -> %s]", ref, filter), ret, property.filterBranch(ref));
+        }
+        
+        log.info("Test succeeded.");
+    }
+
     //
     // Helper methods
     //