Closes #42: Gravatar images in comments

docs-core/src/test/java/com/sismics/util/TestImageUtil.java

@@ -0,0 +1,17 @@
+package com.sismics.util;
+
+import junit.framework.Assert;
+import org.junit.Test;
+
+/**
+ * Test of the image utilities.
+ * 
+ * @author bgamard
+ */
+public class TestImageUtil {
+
+    @Test
+    public void computeGravatarTest() throws Exception {
+        Assert.assertEquals("0bc83cb571cd1c50ba6f3e8a78ef1346", ImageUtil.computeGravatar("MyEmailAddress@example.com "));
+    }
+}