public void Update_NewEntries_AddNewEntries(
            SubtitleStateEntry[] newEntries,
            SubtitleStateEntry[] existingEntries,
            SubtitleState state)
        {
            var failedFiles = existingEntries.Concat(newEntries).Select(e => e.File);
            state.Entries.Clear();
            state.Entries.AddRange(existingEntries);

            state.Update(failedFiles);

            Assert.That(state.Entries.Select(e => e.File), Is.EquivalentTo(failedFiles));
        }