test: replace episode metadata tests with deferred playback test

internal/playback/handler/episode_metadata_test.go

@@ -3,7 +3,6 @@ package handler
 import (
 	"bytes"
 	"context"
-	"encoding/json"
 	"errors"
 	"mal/internal/db"
 	"mal/internal/domain"
@@ -15,25 +14,6 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-type episodeMetadataAnimeService struct {
-	domain.AnimePlaybackService
-	err error
-}
-
-func (s episodeMetadataAnimeService) GetAllEpisodes(context.Context, int) ([]domain.EpisodeData, error) {
-	if s.err != nil {
-		return nil, s.err
-	}
-	return []domain.EpisodeData{
-		{MalID: 1, Title: "The Beginning"},
-		{MalID: 2, Title: "The Follow-Up"},
-	}, nil
-}
-
-func (s episodeMetadataAnimeService) GetAnimeByID(context.Context, int) (domain.Anime, error) {
-	return domain.Anime{}, nil
-}
-
 type failingSkipSegmentPlaybackService struct {
 	domain.PlaybackService
 }
@@ -42,62 +22,6 @@ func (s failingSkipSegmentPlaybackService) UpsertSkipSegmentOverride(context.Con
 	return errors.New("database constraint skip_segments_user_id_fkey failed")
 }
 
-func TestEpisodeMetadataRouteReturnsEpisodeTitles(t *testing.T) {
-	t.Parallel()
-
-	gin.SetMode(gin.TestMode)
-	router := gin.New()
-	h := NewPlaybackHandler(nil, episodeMetadataAnimeService{})
-	h.Register(router)
-
-	req := httptest.NewRequestWithContext(context.Background(), http.MethodGet, "/api/watch/episodes/123/metadata", nil)
-	rec := httptest.NewRecorder()
-	router.ServeHTTP(rec, req)
-
-	if rec.Code != http.StatusOK {
-		t.Fatalf("status = %d, want %d", rec.Code, http.StatusOK)
-	}
-
-	var got []struct {
-		MalID int    `json:"mal_id"`
-		Title string `json:"title"`
-	}
-	if err := json.Unmarshal(rec.Body.Bytes(), &got); err != nil {
-		t.Fatalf("json.Unmarshal() error = %v", err)
-	}
-
-	if len(got) != 2 {
-		t.Fatalf("len(got) = %d, want 2", len(got))
-	}
-	if got[0].MalID != 1 || got[0].Title != "The Beginning" {
-		t.Fatalf("got[0] = %+v, want episode 1 title", got[0])
-	}
-}
-
-func TestEpisodeMetadataRouteHidesServiceError(t *testing.T) {
-	t.Parallel()
-
-	gin.SetMode(gin.TestMode)
-	router := gin.New()
-	h := NewPlaybackHandler(nil, episodeMetadataAnimeService{err: errors.New("upstream returned credentials in URL")})
-	h.Register(router)
-
-	req := httptest.NewRequestWithContext(context.Background(), http.MethodGet, "/api/watch/episodes/123/metadata", nil)
-	rec := httptest.NewRecorder()
-	router.ServeHTTP(rec, req)
-
-	if rec.Code != http.StatusInternalServerError {
-		t.Fatalf("status = %d, want %d", rec.Code, http.StatusInternalServerError)
-	}
-	body := rec.Body.String()
-	if !strings.Contains(body, `"error":"failed to load episode metadata"`) {
-		t.Fatalf("expected stable public error, got %s", body)
-	}
-	if strings.Contains(body, "upstream returned credentials") {
-		t.Fatalf("expected private service error to stay out of response, got %s", body)
-	}
-}
-
 func TestUpsertSkipSegmentRouteHidesServiceError(t *testing.T) {
 	t.Parallel()
 

internal/playback/handler/watch_page_test.go

@@ -18,11 +18,13 @@ type watchPagePlaybackService struct {
 	domain.PlaybackService
 
 	data             domain.WatchPageData
+	deferred         bool
 	err              error
 	refreshRequested bool
 }
 
 func (s *watchPagePlaybackService) BuildWatchData(ctx context.Context, _ int, _ []string, _ string, _ string, _ string) (domain.WatchPageData, error) {
+	s.deferred = domain.PlaybackDataDeferred(ctx)
 	s.refreshRequested = domain.PlaybackSourceRefreshRequested(ctx)
 	return s.data, s.err
 }
@@ -135,6 +137,23 @@ func TestHandleWatchPagePreservesPartialDataOnPlaybackFailure(t *testing.T) {
 	}
 }
 
+func TestHandleWatchPageDefersPlaybackData(t *testing.T) {
+	t.Parallel()
+
+	svc := &watchPagePlaybackService{data: baseWatchPageData()}
+	router := newWatchPageRouter(t, &PlaybackHandler{svc: svc})
+	req := httptest.NewRequestWithContext(context.Background(), http.MethodGet, "/anime/123/watch?ep=1", nil)
+	rec := httptest.NewRecorder()
+	router.ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d, want %d", rec.Code, http.StatusOK)
+	}
+	if !svc.deferred {
+		t.Fatal("watch page did not defer playback data")
+	}
+}
+
 func TestHandleWatchPageRendersEpisodeAvailabilityWarningModal(t *testing.T) {
 	t.Parallel()