feat: SEO backend data (1/4)

test/sqlite_schema_unchanged_test.go

@@ -173,7 +173,10 @@ func TestSQLiteSchemaIsUntouchedByTheModelChanges(t *testing.T) {
 				delete(after.schema, name)
 			}
 		}
-		for _, name := range []string{"articles", "idx_articles_site_id"} {
+		if _, indexed := after.schema["idx_articles_site_slug"]; !indexed {
+			t.Errorf("the unique (site_id, slug) index is missing: %v", after.schema)
+		}
+		for _, name := range []string{"articles", "idx_articles_site_id", "idx_articles_site_slug", "idx_articles_cover_image_id", "idx_articles_social_image_id"} {
 			delete(before.schema, name)
 			delete(after.schema, name)
 		}
@@ -181,21 +184,28 @@ func TestSQLiteSchemaIsUntouchedByTheModelChanges(t *testing.T) {
 			t.Errorf("schema changed:\nbefore %v\nafter  %v", before.schema, after.schema)
 		}
 		assertSiteColumnAdded(t, db)
-		delete(after.rows["articles"][0], "site_id")
+		if after.rows["articles"][0]["slug"] != "first" {
+			t.Errorf("the legacy article was not backfilled: %v", after.rows["articles"][0])
+		}
+		for _, column := range addedArticleColumns {
+			delete(after.rows["articles"][0], column)
+		}
 		if !reflect.DeepEqual(before.rows, after.rows) {
 			t.Errorf("rows changed:\nbefore %v\nafter  %v", before.rows, after.rows)
 		}
 	})
 }
 
+var addedArticleColumns = []string{"site_id", "slug", "excerpt", "seo_title", "seo_description", "cover_image_id", "cover_image_alt", "social_title", "social_description", "social_image_id", "canonical_url", "noindex", "seo_dismissed"}
+
 func assertSiteColumnAdded(t *testing.T, db *gorm.DB) {
 	t.Helper()
 	var columns []string
 	if err := db.Raw("SELECT name FROM pragma_table_info('articles') ORDER BY cid").Scan(&columns).Error; err != nil {
 		t.Fatalf("read article columns: %v", err)
 	}
-	if columns[len(columns)-1] != "site_id" {
-		t.Errorf("expected site_id to be the only added article column, got %v", columns)
+	if !reflect.DeepEqual(columns[len(columns)-len(addedArticleColumns):], addedArticleColumns) {
+		t.Errorf("expected the added article columns %v at the end, got %v", addedArticleColumns, columns)
 	}
 	for _, table := range []string{"sites", "authors", "article_authors"} {
 		var found int