@BeforeAll
    public static void setup() throws Exception {
        METADATA_FILE = File.createTempFile("sp-saml-metadata", ".xml");
        val content = IOUtils.toString(new ClassPathResource("sample-sp.xml").getInputStream(), StandardCharsets.UTF_8);
        FileUtils.writeStringToFile(METADATA_FILE, content, StandardCharsets.UTF_8);
    }
This is {@link FileSystemResourceMetadataResolverTests}.

@author Misagh Moayyed
@since 6.3.0
support/cas-server-support-saml-idp-metadata/src/test/java/org/apereo/cas/support/saml/services/idp/metadata/cache/resolver/FileSystemResourceMetadataResolverTests.java