public void InvalidSentenceTest()
{
const string SampleSentence = "Dummy.";
const string SampleErrorMessage = "Dummy error message";
_wordsCounterMock.Setup(vm => vm.Count(It.IsAny<string>()))
.Callback(() => { throw new InvalidSentenceException(SampleErrorMessage); });
var viewModel = new WordsCounterViewModel();
viewModel.CheckSentence.Execute(SampleSentence);
Assert.AreEqual(viewModel.ValidationMessage, SampleErrorMessage, "Proper error message should be set.");
Assert.IsNull(viewModel.Result, "Result should be null.");
}
public void CanExecuteCheckSentenceCommandTest()
{
const string NullSentence = null;
const string EmptySentence = "";
const string WhiteSentence = " \t \n ";
var viewModel = new WordsCounterViewModel();
Assert.IsFalse(viewModel.CheckSentence.CanExecute(NullSentence),
"Command should not be available for null input string.");
Assert.IsFalse(viewModel.CheckSentence.CanExecute(EmptySentence),
"Command should not be available for empty input string.");
Assert.IsFalse(viewModel.CheckSentence.CanExecute(WhiteSentence),
"Command should not be available for whitespace input string.");
}
public void CheckClearResultTest()
{
const string SampleSentence1 = "Dummy1.";
const string SampleSentence2 = "Dummy2.";
var viewModel = new WordsCounterViewModel();
_wordsCounterMock.SetupGet(vm => vm.Result).Returns(new Dictionary<string, int>());
viewModel.Sentence = SampleSentence1;
viewModel.CheckSentence.Execute(SampleSentence1);
Assert.IsNotNull(viewModel.Result, "Result should not be null.");
viewModel.Sentence = SampleSentence2;
Assert.IsNull(viewModel.Result, "Result should be null.");
}
public void MixedValidationScenarioTest()
{
const string InvalidSentence = "A. B.";
const string SampleSentence = "Dummy.";
const string SampleErrorMessage = "Dummy error message";
var viewModel = new WordsCounterViewModel();
// ------ Invalid sentence scenario ------
_wordsCounterMock.Setup(vm => vm.Count(It.IsIn(InvalidSentence)))
.Callback(() => { throw new InvalidSentenceException(SampleErrorMessage); });
_wordsCounterMock.Setup(vm => vm.Count(It.IsIn(SampleSentence)))
.Callback(() => { });
viewModel.CheckSentence.Execute(InvalidSentence);
Assert.AreEqual(viewModel.ValidationMessage, SampleErrorMessage, "Proper error message should be set.");
Assert.IsNull(viewModel.Result, "Result should be null.");
// ------ Valid sentence scenario -------
var result = new Dictionary<string, int>();
_wordsCounterMock.SetupGet(vm => vm.Result).Returns(result);
viewModel.CheckSentence.Execute(SampleSentence);
Assert.AreEqual(viewModel.ValidationMessage, null, "Validation message should be null.");
Assert.AreEqual(viewModel.Result, result, "Result object should be equal to this provided by words counter.");
}
public void ValidSentenceTest()
{
const string SampleSentence = "Dummy.";
var result = new Dictionary<string, int>();
_wordsCounterMock.SetupGet(vm => vm.Result).Returns(result);
var viewModel = new WordsCounterViewModel();
viewModel.CheckSentence.Execute(SampleSentence);
Assert.AreEqual(viewModel.ValidationMessage, null, "Validation message should be null.");
Assert.AreEqual(viewModel.Result, result, "Result object should be equal to this provided by words counter.");
}
public void TriggerCheckSentenceExecutionTest()
{
const string SampleSentence = "Dummy.";
var viewModel = new WordsCounterViewModel();
int counter = 0;
_wordsCounterMock.Setup(vm => vm.Count(It.IsAny<string>()))
.Callback(() => { counter++; });
_wordsCounterMock.SetupGet(vm => vm.Result).Returns(new Dictionary<string, int>());
viewModel.SelectedAlgorithm = WordCounterAlgorithm.Dict;
viewModel.Sentence = SampleSentence;
viewModel.CheckSentence.Execute(SampleSentence);
Assert.AreEqual(counter, 1, string.Format("Method should be executed {0} number of times", counter));
// Check method should be executed automatically
viewModel.SelectedAlgorithm = WordCounterAlgorithm.Linq;
Assert.AreEqual(counter, 2, string.Format("Method should be executed {0} number of times", counter));
// Check method should not be executed automatically (since before algorithm change there was no result calculated)
viewModel.Sentence = null;
viewModel.SelectedAlgorithm = WordCounterAlgorithm.Dict;
Assert.AreEqual(counter, 2, string.Format("Method should be executed {0} number of times", counter));
}
