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diff --git a/component/src/test/java/com/yahoo/component/VersionTestCase.java b/component/src/test/java/com/yahoo/component/VersionTestCase.java
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+++ b/component/src/test/java/com/yahoo/component/VersionTestCase.java
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+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.component;
+
+import com.yahoo.text.Utf8Array;
+import com.yahoo.text.Utf8String;
+
+/**
+ * @author bratseth
+ */
+public class VersionTestCase extends junit.framework.TestCase {
+
+    public void testPrimitiveCreation() {
+        Version version=new Version(1,2,3,"qualifier");
+        assertEquals(1,version.getMajor());
+        assertEquals(2,version.getMinor());
+        assertEquals(3,version.getMicro());
+        assertEquals("qualifier",version.getQualifier());
+    }
+
+    public void testUnderspecifiedPrimitiveCreation() {
+        Version version=new Version(1);
+        assertEquals(1,version.getMajor());
+        assertEquals(1,version.getMajor());
+        assertEquals(0,version.getMinor());
+        assertEquals(0,version.getMicro());
+        assertEquals("",version.getQualifier());
+    }
+
+    public void testStringCreation() {
+        Version version=new Version("1.2.3.qualifier");
+        assertEquals(1,version.getMajor());
+        assertEquals(2,version.getMinor());
+        assertEquals(3,version.getMicro());
+        assertEquals("qualifier",version.getQualifier());
+    }
+    public void testUtf8StringCreation() {
+        Version version=new Version((Utf8Array)new Utf8String("1.2.3.qualifier"));
+        assertEquals(1,version.getMajor());
+        assertEquals(2,version.getMinor());
+        assertEquals(3,version.getMicro());
+        assertEquals("qualifier",version.getQualifier());
+    }
+
+    public void testUnderspecifiedStringCreation() {
+        Version version=new Version("1");
+        assertEquals(1,version.getMajor());
+        assertEquals(0,version.getMinor());
+        assertEquals(0,version.getMicro());
+        assertEquals("",version.getQualifier());
+    }
+
+    public void testEquality() {
+        assertEquals(new Version(),Version.emptyVersion);
+        assertEquals(new Version(),new Version(""));
+        assertEquals(new Version(0,0,0),Version.emptyVersion);
+        assertEquals(new Version(1),new Version("1"));
+        assertEquals(new Version(1,2),new Version("1.2"));
+        assertEquals(new Version(1,2,3),new Version("1.2.3"));
+        assertEquals(new Version(1,2,3,"qualifier"),new Version("1.2.3.qualifier"));
+    }
+
+    public void testToString() {
+        assertEquals("",new Version().toString());
+        assertEquals("1",new Version(1).toString());
+        assertEquals("1.2",new Version(1,2).toString());
+        assertEquals("1.2.3",new Version(1,2,3).toString());
+        assertEquals("1.2.3.qualifier",new Version(1,2,3,"qualifier").toString());
+    }
+
+    public void testOrder() {
+        assertTrue(new Version("1.2.3").compareTo(new Version("1.2.3"))==0);
+        assertTrue(new Version("1.2.3").compareTo(new Version("1.2.4"))<0);
+        assertTrue(new Version("1.2.3").compareTo(new Version("1.2.2"))>0);
+
+        assertTrue(new Version("1.2.3").compareTo(new Version("2"))<0);
+        assertTrue(new Version("1.2.3").compareTo(new Version("1.3"))<0);
+
+        assertTrue(new Version("1.0.0").compareTo(new Version("1"))==0);
+    }
+
+}