feat: add user selection flow

backend/src/test/java/se/rubble/hemhub/user/UserApiTest.java

@@ -0,0 +1,108 @@
+package se.rubble.hemhub.user;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.context.WebApplicationContext;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@SpringBootTest
+class UserApiTest {
+
+    @Autowired
+    private WebApplicationContext context;
+
+    @Autowired
+    private UserRepository userRepository;
+
+    private MockMvc mockMvc;
+
+    @BeforeEach
+    void setUp() {
+        userRepository.deleteAll();
+        mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
+    }
+
+    @Test
+    void listsNoUsersWhenDatabaseIsEmpty() throws Exception {
+        mockMvc.perform(get("/api/users"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$").isEmpty());
+    }
+
+    @Test
+    void createsAndListsUserWithTrimmedName() throws Exception {
+        mockMvc.perform(post("/api/users")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("""
+                                {"name": "  Urban  "}
+                                """))
+                .andExpect(status().isCreated())
+                .andExpect(jsonPath("$.id").isString())
+                .andExpect(jsonPath("$.name").value("Urban"))
+                .andExpect(jsonPath("$.createdAt").isString())
+                .andExpect(jsonPath("$.normalizedName").doesNotExist());
+
+        mockMvc.perform(get("/api/users"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$[0].name").value("Urban"));
+    }
+
+    @Test
+    void rejectsInvalidNames() throws Exception {
+        mockMvc.perform(post("/api/users")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("""
+                                {"name": "   "}
+                                """))
+                .andExpect(status().isBadRequest())
+                .andExpect(jsonPath("$.code").value("INVALID_USER_NAME"));
+
+        mockMvc.perform(post("/api/users")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("{\"name\": \"%s\"}".formatted("a".repeat(51))))
+                .andExpect(status().isBadRequest())
+                .andExpect(jsonPath("$.code").value("INVALID_USER_NAME"));
+    }
+
+    @Test
+    void rejectsDuplicateNameIgnoringCase() throws Exception {
+        createUser("Urban");
+
+        mockMvc.perform(post("/api/users")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("""
+                                {"name": "urban"}
+                                """))
+                .andExpect(status().isConflict())
+                .andExpect(jsonPath("$.code").value("USER_NAME_ALREADY_EXISTS"));
+    }
+
+    @Test
+    void listsUsersSortedByDisplayName() throws Exception {
+        createUser("Urban");
+        createUser("Anna");
+        createUser("Bertil");
+
+        mockMvc.perform(get("/api/users"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$[0].name").value("Anna"))
+                .andExpect(jsonPath("$[1].name").value("Bertil"))
+                .andExpect(jsonPath("$[2].name").value("Urban"));
+    }
+
+    private void createUser(String name) throws Exception {
+        mockMvc.perform(post("/api/users")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("{\"name\": \"%s\"}".formatted(name)))
+                .andExpect(status().isCreated());
+    }
+}

backend/src/test/resources/application.properties

@@ -0,0 +1,7 @@
+spring.datasource.url=jdbc:h2:mem:hemhub-test;MODE=PostgreSQL;DATABASE_TO_LOWER=TRUE;DEFAULT_NULL_ORDERING=HIGH;DB_CLOSE_DELAY=-1
+spring.datasource.username=sa
+spring.datasource.password=
+spring.jpa.hibernate.ddl-auto=validate
+spring.jpa.open-in-view=false
+spring.flyway.enabled=true
+