feat: add task creation board

backend/src/test/java/se/rubble/hemhub/task/TaskApiTest.java

@@ -0,0 +1,107 @@
+package se.rubble.hemhub.task;
+
+import java.time.Instant;
+import java.util.UUID;
+
+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 TaskApiTest {
+
+    @Autowired
+    private WebApplicationContext context;
+
+    @Autowired
+    private TaskRepository taskRepository;
+
+    private MockMvc mockMvc;
+
+    @BeforeEach
+    void setUp() {
+        taskRepository.deleteAll();
+        mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
+    }
+
+    @Test
+    void createsWaitingTaskWithTrimmedValues() throws Exception {
+        mockMvc.perform(post("/api/tasks")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("""
+                                {
+                                  "title": "  Dammsuga  ",
+                                  "description": "  Bottenvåningen  "
+                                }
+                                """))
+                .andExpect(status().isCreated())
+                .andExpect(jsonPath("$.id").isString())
+                .andExpect(jsonPath("$.title").value("Dammsuga"))
+                .andExpect(jsonPath("$.description").value("Bottenvåningen"))
+                .andExpect(jsonPath("$.status").value("WAITING"))
+                .andExpect(jsonPath("$.createdAt").isString());
+    }
+
+    @Test
+    void storesBlankDescriptionAsNull() throws Exception {
+        mockMvc.perform(post("/api/tasks")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("""
+                                {"title": "Dammsuga", "description": "   "}
+                                """))
+                .andExpect(status().isCreated())
+                .andExpect(jsonPath("$.description").value((Object) null));
+    }
+
+    @Test
+    void rejectsBlankAndTooLongTitles() throws Exception {
+        assertInvalidTask("""
+                {"title": "   "}
+                """);
+        assertInvalidTask("{\"title\": \"%s\"}".formatted("a".repeat(101)));
+    }
+
+    @Test
+    void rejectsTooLongDescription() throws Exception {
+        assertInvalidTask("""
+                {"title": "Dammsuga", "description": "%s"}
+                """.formatted("a".repeat(501)));
+    }
+
+    @Test
+    void listsTasksOldestFirstWithIdAsTieBreaker() throws Exception {
+        Instant older = Instant.parse("2026-07-24T10:00:00Z");
+        Instant newer = Instant.parse("2026-07-24T11:00:00Z");
+        UUID firstId = UUID.fromString("00000000-0000-0000-0000-000000000001");
+        UUID secondId = UUID.fromString("00000000-0000-0000-0000-000000000002");
+        UUID newestId = UUID.fromString("00000000-0000-0000-0000-000000000003");
+
+        taskRepository.save(new Task(newestId, "Nyast", null, TaskStatus.WAITING, newer));
+        taskRepository.save(new Task(secondId, "Andra", null, TaskStatus.IN_PROGRESS, older));
+        taskRepository.save(new Task(firstId, "Första", null, TaskStatus.COMPLETED, older));
+
+        mockMvc.perform(get("/api/tasks"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$[0].title").value("Första"))
+                .andExpect(jsonPath("$[1].title").value("Andra"))
+                .andExpect(jsonPath("$[2].title").value("Nyast"));
+    }
+
+    private void assertInvalidTask(String body) throws Exception {
+        mockMvc.perform(post("/api/tasks")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(body))
+                .andExpect(status().isBadRequest())
+                .andExpect(jsonPath("$.code").value("INVALID_TASK"));
+    }
+}