feat: SEO backend data (1/4)

test/authors_backend_articles_http_test.go

@@ -523,7 +523,7 @@ func TestAuthorsBackendMediaUsage(t *testing.T) {
 		}
 	})
 
-	t.Run("The usage lookup array shape is unchanged", func(t *testing.T) {
+	t.Run("The usage lookup stays an array and later gains additive keys", func(t *testing.T) {
 		e := newAuthorEnv(t)
 		e.seedBanner(5, "banner.png", "hash")
 		e.authors.seed(2, "Camille", "camille")
@@ -532,8 +532,13 @@ func TestAuthorsBackendMediaUsage(t *testing.T) {
 
 		rec := e.owner(t, http.MethodGet, "/v1/media/5/usage", "")
 
-		if rec.Code != http.StatusOK || !strings.HasPrefix(rec.Body.String(), `[{"id":1,"title":`) || strings.Contains(rec.Body.String(), "author") {
-			t.Errorf("status %d body %s", rec.Code, rec.Body.String())
+		var items []map[string]any
+		if err := json.Unmarshal(rec.Body.Bytes(), &items); err != nil || rec.Code != http.StatusOK || len(items) != 2 {
+			t.Fatalf("status %d body %s", rec.Code, rec.Body.String())
+		}
+		first := items[0]
+		if first["id"] != float64(1) || first["title"] != "Spring release" || first["published"] != true || first["type"] != "article" {
+			t.Errorf("the article item lost a key: %v", first)
 		}
 	})
 }