@Test
public void makeAbsoluteFileFile_noRoot() {

	assertNull(FileSystem.makeAbsolute((File)null, (File)null));
	assertEquals(new File(File.separator+"toto"),  //$NON-NLS-1$
			FileSystem.makeAbsolute(new File(File.separator+"toto"), (File)null));  //$NON-NLS-1$
	assertEquals(new File("toto"),  //$NON-NLS-1$
			FileSystem.makeAbsolute(new File("toto"), (File)null));  //$NON-NLS-1$
}