Source:
<code>public void loadUserWhenUserInfoSuccessResponseThenReturnUser() { String userInfoResponse = "{\n" + " \"user-name\": \"user1\",\n" + " \"first-name\": \"first\",\n" + " \"last-name\": \"last\",\n" + " \"middle-name\": \"middle\",\n" + " \"address\": \"address\",\n" + " \"email\": \"user1@example.com\"\n" + "}\n"; this.server.enqueue(jsonResponse(userInfoResponse)); String userInfoUri = this.server.url("/user").toString(); ClientRegistration clientRegistration = this.clientRegistrationBuilder .userInfoUri(userInfoUri) .userInfoAuthenticationMethod(AuthenticationMethod.HEADER) .userNameAttributeName("user-name").build(); OAuth2User user = this.userService.loadUser(new OAuth2UserRequest(clientRegistration, this.accessToken)); assertThat(user.getName()).isEqualTo("user1"); assertThat(user.getAttributes().size()).isEqualTo(6); <START> assertThat((Object) user.getAttribute("user-name")).isEqualTo("user1"); <END> assertThat((Object) user.getAttribute("first-name")).isEqualTo("first"); assertThat((Object) user.getAttribute("last-name")).isEqualTo("last"); assertThat((Object) user.getAttribute("middle-name")).isEqualTo("middle"); assertThat((Object) user.getAttribute("address")).isEqualTo("address"); assertThat((Object) user.getAttribute("email")).isEqualTo("user1@example.com"); assertThat(user.getAuthorities().size()).isEqualTo(1); assertThat(user.getAuthorities().iterator().next()).isInstanceOf(OAuth2UserAuthority.class); OAuth2UserAuthority userAuthority = (OAuth2UserAuthority) user.getAuthorities().iterator().next(); assertThat(userAuthority.getAuthority()).isEqualTo("ROLE_USER"); assertThat(userAuthority.getAttributes()).isEqualTo(user.getAttributes()); }</code><technical_language>Change Object String</technical_language>

Target:
public void loadUserWhenUserInfoSuccessResponseThenReturnUser() { String userInfoResponse = "{\n" + " \"user-name\": \"user1\",\n" + " \"first-name\": \"first\",\n" + " \"last-name\": \"last\",\n" + " \"middle-name\": \"middle\",\n" + " \"address\": \"address\",\n" + " \"email\": \"user1@example.com\"\n" + "}\n"; this.server.enqueue(jsonResponse(userInfoResponse)); String userInfoUri = this.server.url("/user").toString(); ClientRegistration clientRegistration = this.clientRegistrationBuilder .userInfoUri(userInfoUri) .userInfoAuthenticationMethod(AuthenticationMethod.HEADER) .userNameAttributeName("user-name").build(); OAuth2User user = this.userService.loadUser(new OAuth2UserRequest(clientRegistration, this.accessToken)); assertThat(user.getName()).isEqualTo("user1"); assertThat(user.getAttributes().size()).isEqualTo(6); assertThat((String) user.getAttribute("user-name")).isEqualTo("user1"); assertThat((String) user.getAttribute("first-name")).isEqualTo("first"); assertThat((String) user.getAttribute("last-name")).isEqualTo("last"); assertThat((String) user.getAttribute("middle-name")).isEqualTo("middle"); assertThat((String) user.getAttribute("address")).isEqualTo("address"); assertThat((String) user.getAttribute("email")).isEqualTo("user1@example.com"); assertThat(user.getAuthorities().size()).isEqualTo(1); assertThat(user.getAuthorities().iterator().next()).isInstanceOf(OAuth2UserAuthority.class); OAuth2UserAuthority userAuthority = (OAuth2UserAuthority) user.getAuthorities().iterator().next(); assertThat(userAuthority.getAuthority()).isEqualTo("ROLE_USER"); assertThat(userAuthority.getAttributes()).isEqualTo(user.getAttributes()); }