Added unit test related to issue #7, and then tweaked testDelombok go…

…al to correctly handle scenario.

lombok-maven-plugin/src/main/java/lombok/maven/TestDelombokMojo.java

@@ -47,7 +47,10 @@ protected File getSourceDirectory() {
 
     @Override
     protected String getSourcePath() {
-        return StringUtils.join(this.project.getTestCompileSourceRoots(), File.pathSeparatorChar);
+      return StringUtils.joinWith(File.pathSeparator,
+          StringUtils.join(this.project.getCompileSourceRoots(), File.pathSeparatorChar),
+          StringUtils.join(this.project.getTestCompileSourceRoots(), File.pathSeparatorChar)
+      );
     }
 
     @Override

test-maven-lombok/src/test/lombok/org/projectlombok/test/DataExampleTest.java

@@ -0,0 +1,16 @@
+package org.projectlombok.test;
+
+import lombok.val;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class DataExampleTest {
+
+    @Test
+    public void testDataExample() {
+        val name = "MyData";
+        val de = new DataExample(name);
+        Assert.assertEquals(de.getName(), name);
+    }
+
+}