1 files changed, 40 insertions, 0 deletions
diff --git a/vespajlib/src/test/java/com/yahoo/collections/CollectionComparatorTestCase.java b/vespajlib/src/test/java/com/yahoo/collections/CollectionComparatorTestCase.java
new file mode 100644
index 00000000000..d77636b907f
--- /dev/null
+++ b/vespajlib/src/test/java/com/yahoo/collections/CollectionComparatorTestCase.java
@@ -0,0 +1,40 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.collections;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * @author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
+ */
+public class CollectionComparatorTestCase {
+    @Test
+    public void arrayLength() {
+        List<String> shortArr = Arrays.asList("x", "y");
+        List<String> longArr = Arrays.asList("a", "b", "c", "d", "e");
+
+        assertEquals(-1, CollectionComparator.compare(shortArr, longArr));
+    }
+
+    @Test
+    public void compareArrays() {
+        List<String> one = Arrays.asList("b", "c", "d", "d", "e");
+        List<String> two = Arrays.asList("a", "b", "c", "d", "e");
+
+        assertEquals(1, CollectionComparator.compare(one, two));
+        assertEquals(-1, CollectionComparator.compare(two, one));
+    }
+
+    @Test
+    public void compareEqualArrays() {
+        List<String> one = Arrays.asList("a", "b", "c", "d", "e");
+        List<String> two = Arrays.asList("a", "b", "c", "d", "e");
+
+        assertEquals(0, CollectionComparator.compare(one, two));
+        assertEquals(0, CollectionComparator.compare(two, one));
+    }
+}