@Test
public void makeAbsoluteFileURL_httpAsRoot() throws Exception {

	final URL root = new URL("http://maven.arakhne.org/myroot");  //$NON-NLS-1$
	assertNull(FileSystem.makeAbsolute((File)null, root));
	assertEquals(new URL("jar:file:/the path/to/file with space.toto!/org/arakhne/afc/vmutil/file.x.z.z/a/b/c"),   //$NON-NLS-1$
			FileSystem.makeAbsolute(new File("a" + File.separator + "b" + File.separator + "c"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
					createFileInJarUrlWithSpaces()));  
}