return null;
            }
        });
        final String root = new File("/").getCanonicalPath();
        assertEquals(root + "Program Files" + File.separator + "foo.zip", ZipFileUtil.toZipFilePath(url));
    }

        final String root = new File("/").getCanonicalPath();
        assertEquals(root + "Program Files" + File.separator + "foo.jar", JarFileUtil.toJarFilePath(url));
    }

    /**
     * @throws Exception
     */
    public void testRelativePath() throws Exception {
        final File f = new File("/Program Files/foo.jar");
        URL url = new URL("jar:" + f.toURI().toURL() + "!/foo/bar/");
        url = new URL(url, "..");

        }
    }

    /**
     * この抽象パス名を<code>file:</code> URLに変換します。
     *
     * @param file
     *            ファイル。{@literal null}であってはいけません
     * @return ファイルURLを表すURLオブジェクト
     */
    public static URL toURL(final File file) {
        assertArgumentNotNull("file", file);

        try {
            return file.toURI().toURL();
        } catch (final IOException e) {
            throw new IORuntimeException(e);

    }

    /**
     * @throws Exception
     */
    public void testToFile() throws Exception {
        final File file = new File("Program Files/hoge.txt");
        final URL url = file.toURI().toURL();
        assertEquals(file.getAbsoluteFile(), URLUtil.toFile(url));
        assertEquals(file.getAbsoluteFile(), URLUtil.toFile(new URL("file:Program%20Files/hoge.txt")));
    }

    /**
     * @throws Exception
     */
    public void testGetBuildDir() throws Exception {
        final File file = ResourceUtil.getBuildDir(getClass());
        System.out.println(file);
        final File file2 = ResourceUtil.getBuildDir("org/codelibs/core/io");
        assertEquals(file, file2);
        final File junitJar = ResourceUtil.getBuildDir(TestCase.class);
        assertTrue(junitJar.exists());