1 files changed, 59 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/test/java/org/onosproject/ui/table/cell/AbstractCellComparatorTest.java b/framework/src/onos/core/api/src/test/java/org/onosproject/ui/table/cell/AbstractCellComparatorTest.java
new file mode 100644
index 00000000..0b9af23d
--- /dev/null
+++ b/framework/src/onos/core/api/src/test/java/org/onosproject/ui/table/cell/AbstractCellComparatorTest.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.ui.table.cell;
+
+import org.junit.Test;
+import org.onosproject.ui.table.CellComparator;
+
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Unit tests for {@link AbstractCellComparator}.
+ */
+public class AbstractCellComparatorTest {
+
+    private static class Concrete extends AbstractCellComparator {
+        @Override
+        protected int nonNullCompare(Object o1, Object o2) {
+            return 42;
+        }
+    }
+
+    private CellComparator cmp = new Concrete();
+
+    @Test
+    public void twoNullArgs() {
+        assertTrue("two nulls", cmp.compare(null, null) == 0);
+    }
+
+    @Test
+    public void nullArgOne() {
+        assertTrue("null one", cmp.compare(null, 1) < 0);
+    }
+
+    @Test
+    public void nullArgTwo() {
+        assertTrue("null two", cmp.compare(1, null) > 0);
+    }
+
+    // mock output, but check that our method was invoked...
+    @Test
+    public void noNulls() {
+        assertTrue("no Nulls", cmp.compare(1, 2) == 42);
+    }
+}