Integrationtest get oidc username from endpoint

RISDEV-6102

backend/src/test/java/de/bund/digitalservice/ris/norms/integration/adapter/input/restapi/UserInfoControllerIntegrationTest.java

@@ -1,27 +1,51 @@
 package de.bund.digitalservice.ris.norms.integration.adapter.input.restapi;
 
-import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.user;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
 import de.bund.digitalservice.ris.norms.integration.BaseIntegrationTest;
+import java.util.Collections;
+import java.util.Map;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.MediaType;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
+import org.springframework.security.oauth2.core.user.DefaultOAuth2User;
+import org.springframework.security.oauth2.core.user.OAuth2User;
 import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
 
 class UserInfoControllerIntegrationTest extends BaseIntegrationTest {
 
   @Autowired
-  MockMvc mvc;
+  private MockMvc mockMvc;
+
+  @BeforeEach
+  void setUp() {
+    OAuth2User oAuth2User = new DefaultOAuth2User(
+      Collections.singletonList(() -> "ROLE_USER"),
+      Map.of("name", "testuser"),
+      "name"
+    );
+    SecurityContextHolder
+      .getContext()
+      .setAuthentication(
+        new OAuth2AuthenticationToken(
+          oAuth2User,
+          Collections.singletonList(() -> "ROLE_USER"),
+          "client-id"
+        )
+      );
+  }
 
   @Test
-  void getUserInfo() throws Exception {
-    mvc
-      .perform(get("/api/v1/me").with(user("user")).accept(MediaType.APPLICATION_JSON))
-      // then
+  void getUserInfo_ShouldReturnUserInfo() throws Exception {
+    mockMvc
+      .perform(get("/api/v1/me"))
+      .andDo(print())
       .andExpect(status().isOk())
-      .andExpect(jsonPath("name").value("user"));
+      .andExpect(MockMvcResultMatchers.jsonPath("$.name").value("testuser"));
   }
 }