@Test
    void verifyBadPayload() {
        try (val webServer = new MockWebServer("-@@-")) {
            this.webServer = webServer;
            this.webServer.start();
            assertTrue(this.webServer.isRunning());
            val props = new RestEndpointProperties();
            props.setUrl("http://localhost:%s".formatted(webServer.getPort()));
            val repo = new OidcRestfulWebFingerUserInfoRepository(props);
            val results = repo.findByEmailAddress("cas@example.org");
            assertTrue(results.isEmpty());
        }
    }
This is {@link OidcRestfulWebFingerUserInfoRepositoryTests}.

@author Misagh Moayyed
@since 6.1.0
support/cas-server-support-oidc/src/test/java/org/apereo/cas/oidc/discovery/webfinger/OidcRestfulWebFingerUserInfoRepositoryTests.java