--- /dev/null
+package org.opendaylight.yangtools.checkstyle;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.io.File;
+import org.junit.Test;
+
+public class FileNameUtilTest {
+
+ @Test
+ public void testFileNameUtil() {
+ File relativeFile = new File("src/main/java");
+ assertFalse(relativeFile.isAbsolute());
+ File absoluteFile = relativeFile.getAbsoluteFile();
+ assertTrue(absoluteFile.isAbsolute());
+ assertEquals("src/main/java", FileNameUtil.getOptionalPathRelativeToMavenProjectRoot(absoluteFile).get().getPath());
+ }
+
+}