@Test
    public void testDecodeParam() throws Exception {
        val webContext = MockWebContext.create();

        webContext.setRequestMethod("POST");
        val decoder =
            new Pac4jHTTPPostDecoder(new CallContext(webContext, new MockSessionStore()));
        val message = URLDecoder.decode(SAML_RESPONSE, StandardCharsets.UTF_8.name());
        webContext.addRequestParameter("SAMLResponse", message);
        decode(decoder);
    }
Tests {@link Pac4jHTTPPostDecoder}.

@author Garry Boyce
@since 4.0.0
pac4j-saml/src/test/java/org/pac4j/saml/transport/Pac4jHTTPPostDecoderTest.java