test(expiry): 完成 #31 后端单元测试与覆盖率提升

internal/expiry/handler_branches_test.go

@@ -0,0 +1,69 @@
+package expiry
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+)
+
+func TestHandler_HealthzAndBadPathBranches(t *testing.T) {
+	r := newTestRouter(t)
+
+	// 覆盖 healthz。
+	{
+		db := newTestDB(t)
+		handler := NewHandler(NewService(NewRepository(db)))
+		w := httptest.NewRecorder()
+		c, _ := gin.CreateTestContext(w)
+		handler.Healthz(c)
+		if w.Code != http.StatusOK {
+			t.Fatalf("healthz status=%d", w.Code)
+		}
+	}
+
+	// 覆盖错误分支。
+	badIDDelete := requestJSON(t, r, http.MethodDelete, "/api/expiry/items/abc", nil)
+	if badIDDelete.Code != http.StatusBadRequest {
+		t.Fatalf("expected bad id 400, got %d", badIDDelete.Code)
+	}
+
+	badDateCreate := requestJSON(t, r, http.MethodPost, "/api/expiry/items", map[string]interface{}{
+		"name":            "错误日期",
+		"category":        "food",
+		"production_date": "2026/01/01",
+		"expiry_date":     "2030-01-01",
+	})
+	if badDateCreate.Code != http.StatusBadRequest {
+		t.Fatalf("expected bad date 400, got %d", badDateCreate.Code)
+	}
+
+	badStatus := requestJSON(t, r, http.MethodPost, "/api/expiry/items/1/status", map[string]interface{}{
+		"status": "invalid",
+	})
+	if badStatus.Code != http.StatusBadRequest && badStatus.Code != http.StatusNotFound {
+		t.Fatalf("expected bad status 400/404, got %d", badStatus.Code)
+	}
+
+	badList := requestJSON(t, r, http.MethodGet, "/api/expiry/items?status=bad", nil)
+	if badList.Code != http.StatusBadRequest {
+		t.Fatalf("expected bad filter 400, got %d", badList.Code)
+	}
+}
+
+func TestHandler_HelperWriters(t *testing.T) {
+	w := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(w)
+	writeExpiryServerError(c)
+	if w.Code != http.StatusInternalServerError {
+		t.Fatalf("expected 500, got %d", w.Code)
+	}
+
+	w2 := httptest.NewRecorder()
+	c2, _ := gin.CreateTestContext(w2)
+	writeExpirySuccess(c2, "ok", gin.H{"x": 1})
+	if w2.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d", w2.Code)
+	}
+}