change to feed.Foo methods instead of passing in feed to package func

src/feeds/db_test.go

@@ -56,7 +56,7 @@ func TestFeeds(t *testing.T) {
 			t.Error("execution.version")
 		}
 
-		if err := feeds.Executed(ctx, got.Entry.ID, got.Version.Created); err != nil {
+		if err := got.Executed(ctx); err != nil {
 			t.Fatal("cannot executed:", err)
 		}
 
@@ -78,7 +78,7 @@ func TestFeeds(t *testing.T) {
 			t.Errorf("changes after execution: was \n\t%+v but now \n\t%+v", got, got2)
 		}
 
-		if err := feeds.Executed(ctx, got.Entry.ID, got.Version.Created); err != nil {
+		if err := got.Executed(ctx); err != nil {
 			t.Fatal("cannot executed again:", err)
 		}
 		got3, err := feeds.Get(ctx, id)