1 files changed, 38 insertions, 0 deletions
diff --git a/vespajlib/src/test/java/com/yahoo/collections/ByteArrayComparatorTestCase.java b/vespajlib/src/test/java/com/yahoo/collections/ByteArrayComparatorTestCase.java
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index 00000000000..68b5812dd1e
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+++ b/vespajlib/src/test/java/com/yahoo/collections/ByteArrayComparatorTestCase.java
@@ -0,0 +1,38 @@
+// 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 static org.junit.Assert.assertEquals;
+
+/**
+ * @author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
+ */
+public class ByteArrayComparatorTestCase {
+    @Test
+    public void arrayLength() {
+        byte[] shortArr = new byte[]{(byte) 1, (byte) 2};
+        byte[] longArr = new byte[]{(byte) 0, (byte) 3, (byte) 3, (byte) 3, (byte) 3, (byte) 3};
+
+        assertEquals(-1, ByteArrayComparator.compare(shortArr, longArr));
+    }
+
+    @Test
+    public void compareArrays() {
+        byte[] one = new byte[]{(byte) 1, (byte) 2, (byte) 3, (byte) 3, (byte) 3, (byte) 3};
+        byte[] two = new byte[]{(byte) 0, (byte) 3, (byte) 3, (byte) 3, (byte) 3, (byte) 3};
+
+        assertEquals(1, ByteArrayComparator.compare(one, two));
+        assertEquals(-1, ByteArrayComparator.compare(two, one));
+    }
+
+    @Test
+    public void compareEqualArrays() {
+        byte[] one = new byte[]{(byte) 1, (byte) 2, (byte) 3, (byte) 3, (byte) 3, (byte) 3, (byte) 9};
+        byte[] two = new byte[]{(byte) 1, (byte) 2, (byte) 3, (byte) 3, (byte) 3, (byte) 3, (byte) 9};
+
+        assertEquals(0, ByteArrayComparator.compare(one, two));
+        assertEquals(0, ByteArrayComparator.compare(two, one));
+    }
+
+}