@Test public void testCreateCannicalUri() { assertThat(SignUtil.createCanonicalUri(null), is("/")); assertThat(SignUtil.createCanonicalUri(""), is("/")); assertThat(SignUtil.createCanonicalUri("/"), is("/")); assertThat(SignUtil.createCanonicalUri("path"), is("/path")); assertThat(SignUtil.createCanonicalUri("/path"), is("/path")); }