public void GivenMessage_ModifiesExpectedProperty()
{
var message = new ModifyPronunciationMessage("Bar");
var state = _reducer.Reduce(message, _initialState);
var screen = (ModifyVocabularyWordScreen)state.CurrentScreen;
screen.Pronunciation.Should().Be(message.Pronunciation);
}
public void GivenMessage_ReturnsMaintainVocabularyWordScreen()
{
var message = new ModifyPronunciationMessage("Bar");
var state = _reducer.Reduce(message, _initialState);
var screen = state.CurrentScreen;
screen.Should().BeOfType <ModifyVocabularyWordScreen>();
}
public WordTutorApplication Reduce(IReduxMessage message, WordTutorApplication currentState)
{
if (currentState is null)
{
throw new ArgumentNullException(nameof(currentState));
}
if (!(currentState.CurrentScreen is ModifyVocabularyWordScreen))
{
return(currentState);
}
return((message ?? throw new ArgumentNullException(nameof(message)))
switch
{
CloseScreenMessage m => currentState.CloseScreen(),
ModifyPhraseMessage m => currentState.UpdateScreen(
(ModifyVocabularyWordScreen s) => s.WithPhrase(m.Phrase)),
ModifyPronunciationMessage m => currentState.UpdateScreen(
(ModifyVocabularyWordScreen s) => s.WithPronunciation(m.Pronunciation)),
ModifySpellingMessage m => currentState.UpdateScreen(
(ModifyVocabularyWordScreen s) => s.WithSpelling(m.Spelling)),
SaveNewVocabularyWordMessage m => currentState.UpdateVocabularySet(
s => s.Add(m.Word))
.CloseScreen(),
SaveModifiedVocabularyWordMessage m => currentState.UpdateVocabularySet(
s => s.Replace(m.OriginalWord, m.ReplacementWord))
.CloseScreen(),
_ => currentState,
});
