Artifact artifact = new Artifact("fess-theme-test", "1.0.0");
        Path result = mockThemeHelper.getJarFile(artifact);
        assertEquals(jarPath, result);
    }

    @Test
    public void test_getJarFile_notExists() {
        try {
            Artifact artifact = new Artifact("fess-theme-test", "1.0.0");
            themeHelper.getJarFile(artifact);
            fail("Should throw ThemeException");