assertEquals("text/html", contentType);
    }

    /**
     * Test method for
     * {@link org.codelibs.core.net.MimeTypeUtil#guessContentType(String)} .
     */
    @Test
    public void testGuessContentType() {
        exception.expect(EmptyArgumentException.class);
        exception.expectMessage(is("[ECL0010]argument[path] is null or empty string."));
        MimeTypeUtil.guessContentType(null);
    }