update

internal/service/street_snap_i18n_test.go

@@ -0,0 +1,96 @@
+package service
+
+import (
+	"context"
+	"testing"
+
+	"fashionapi/internal/dto"
+	"fashionapi/internal/model"
+	"fashionapi/internal/pkg/imgurl"
+	"fashionapi/internal/repository"
+)
+
+// fakeSnapRepo 只实现测试路径用到的仓储方法；其余由嵌入的接口兜底（测试中不会调到未实现的方法）。
+type fakeSnapRepo struct {
+	repository.StreetSnapRepository
+	findByID   *model.StreetSnap
+	listImages []model.StreetSnapImage
+	rows       []model.StreetSnap
+}
+
+func (f *fakeSnapRepo) FindByID(_ context.Context, _ string) (*model.StreetSnap, error) {
+	return f.findByID, nil
+}
+
+func (f *fakeSnapRepo) ListImages(_ context.Context, _ string) ([]model.StreetSnapImage, error) {
+	return f.listImages, nil
+}
+
+func (f *fakeSnapRepo) List(_ context.Context, q dto.StreetSnapQuery) ([]model.StreetSnap, int64, error) {
+	return f.rows, int64(len(f.rows)), nil
+}
+
+var _ repository.StreetSnapRepository = (*fakeSnapRepo)(nil)
+
+func newSnapService(f *fakeSnapRepo) StreetSnapService {
+	return NewStreetSnapService(f, nil, imgurl.New("", "", ""), nil, nil)
+}
+
+// TestStreetSnapDetailLocalizesTitle 详情按 locale 返回中/英标题。
+func TestStreetSnapDetailLocalizesTitle(t *testing.T) {
+	repo := &fakeSnapRepo{
+		findByID:   &model.StreetSnap{ID: 1, Title: "London Street Style", TitleCn: "伦敦街拍", Cover: "c.jpg"},
+		listImages: []model.StreetSnapImage{{ID: 1, Image: "a.jpg"}},
+	}
+	svc := newSnapService(repo)
+
+	cn, err := svc.Detail(context.Background(), "1", "cn")
+	if err != nil {
+		t.Fatalf("Detail cn err: %v", err)
+	}
+	if cn.Title != "伦敦街拍" {
+		t.Errorf("cn 标题应为中文，实际 %q", cn.Title)
+	}
+
+	en, err := svc.Detail(context.Background(), "1", "en")
+	if err != nil {
+		t.Fatalf("Detail en err: %v", err)
+	}
+	if en.Title != "London Street Style" {
+		t.Errorf("en 标题应为英文，实际 %q", en.Title)
+	}
+}
+
+// TestStreetSnapDetailFallsBackToEn 中文为空时回落英文。
+func TestStreetSnapDetailFallsBackToEn(t *testing.T) {
+	repo := &fakeSnapRepo{findByID: &model.StreetSnap{ID: 1, Title: "Only English", TitleCn: ""}}
+	svc := newSnapService(repo)
+
+	cn, err := svc.Detail(context.Background(), "1", "cn")
+	if err != nil {
+		t.Fatalf("Detail cn err: %v", err)
+	}
+	if cn.Title != "Only English" {
+		t.Errorf("中文为空应回落英文，实际 %q", cn.Title)
+	}
+}
+
+// TestStreetSnapListLocalizesTitle 列表按 locale 取标题，中文为空回落英文。
+func TestStreetSnapListLocalizesTitle(t *testing.T) {
+	repo := &fakeSnapRepo{rows: []model.StreetSnap{
+		{ID: 1, Title: "EN A", TitleCn: "中 A"},
+		{ID: 2, Title: "EN B", TitleCn: ""},
+	}}
+	svc := newSnapService(repo)
+
+	got, _, err := svc.List(context.Background(), dto.StreetSnapQuery{Locale: "cn", Images: 0})
+	if err != nil {
+		t.Fatalf("List err: %v", err)
+	}
+	if len(got) != 2 {
+		t.Fatalf("期望 2 条，实际 %d", len(got))
+	}
+	if got[0].Title != "中 A" || got[1].Title != "EN B" {
+		t.Errorf("列表本地化错误: %#v", got)
+	}
+}