test multi-executions

src/feeds/db_test.go

@@ -104,5 +104,13 @@ func TestFeeds(t *testing.T) {
 		if got != got2 {
 			t.Errorf("changes after execution: was \n\t%+v but now \n\t%+v", got, got2)
 		}
+
+		if err := f.Executed(ctx, got.Entry.ID, got.Version.Created); err != nil {
+			t.Fatal("cannot executed again:", err)
+		} else if got3, err := f.Get(ctx, id); err != nil {
+			t.Fatal("cannot get w executed again:", err)
+		} else if got2.Execution == got3.Execution {
+			t.Errorf("getting after second execution returned first execution")
+		}
 	})
 }