Improve result modal and Envato previews

backend/services/cse_test.go

@@ -1,6 +1,7 @@
 package services
 
 import (
+	"encoding/base64"
 	"strings"
 	"testing"
 )
@@ -23,6 +24,16 @@ func TestDeriveEnvatoPreviewFromThumbnail(t *testing.T) {
 	}
 }
 
+func TestExtractEnvatoPreviewFromHydration(t *testing.T) {
+	payload := `{"contentUrl":"https://video-previews.elements.envatousercontent.com/example/watermarked_preview/watermarked_preview.mp4"}`
+	html := `<script>window.INITIAL_HYDRATION_DATA="` + base64.StdEncoding.EncodeToString([]byte(payload)) + `";window.INITIAL_HYDRATION_DATA_ENCODED=true;</script>`
+	got := extractEnvatoPreviewFromHydration(html)
+	want := "https://video-previews.elements.envatousercontent.com/example/watermarked_preview/watermarked_preview.mp4"
+	if got != want {
+		t.Fatalf("expected %q, got %q", want, got)
+	}
+}
+
 func TestIsUsefulGoogleVideoResultRejectsMusicResults(t *testing.T) {
 	result := SearchResult{
 		Title:   "Couple Friendly Sad Bgm Movie Best Bgm",