public void ShouldRaisePropertyChangedForErrorMessageWhenFailedResultChangedToSuccessful()
{
var validPath = @"data.xlsx";
var data = new[]
{
new Dictionary <string, double> {
{ "five", 0 }, { "six", 0 }
}
};
var successfulResult = DataResult.CreateSuccessful(data);
FakeProvider.GetFrom(validPath).Returns(successfulResult);
var invalidPath = @"notexisted.file";
var failedResult = DataResult.CreateFailed("File not found");
FakeProvider.GetFrom(invalidPath).Returns(failedResult);
ViewModel.LoadDataCommand.Execute(invalidPath);
ViewModel.MonitorEvents();
ViewModel.LoadDataCommand.Execute(validPath);
ViewModel.ShouldRaisePropertyChangeFor(viewModel => viewModel.ErrorMessage);
}
public void CreateFailed_ShouldReturnResultWithErrorMessageEqualsGivenMessage()
{
var errorMessage = "File not found";
var result = DataResult.CreateFailed(errorMessage);
result.ErrorMessage.Should().Be(errorMessage);
}
public void CreateFailed_ShouldReturnResultWithEmptyData()
{
var errorMessage = "something gone wrong";
var result = DataResult.CreateFailed(errorMessage);
result.Data.Should().BeEmpty();
}
public void ShouldClearColumnsWhenGetFailedResult()
{
var path = @"notExistedFile.xls";
var failedResult = DataResult.CreateFailed("File not found");
FakeProvider.GetFrom(path).Returns(failedResult);
ViewModel.LoadDataCommand.Execute(path);
ViewModel.Columns.Should().BeEmpty();
}
public DataResult Read(string path)
{
try
{
return(ReadImpl(path));
}
catch (Exception exception)
{
return(DataResult.CreateFailed(exception.Message));
}
}
public void ShouldRaiseOnPropertyChangedForErrorMessageWhenGetFailedResult()
{
var path = @"file.txt";
var failedResult = DataResult.CreateFailed("Provider doesn not support this type of file");
FakeProvider.GetFrom(path).Returns(failedResult);
ViewModel.MonitorEvents();
ViewModel.LoadDataCommand.Execute(path);
ViewModel.ShouldRaisePropertyChangeFor(viewModel => viewModel.ErrorMessage);
}
public void GetFrom_ShouldReturnFailedResultWithMessageProvidedByDataReader(string fileName, string fileExtension, string errorMessage)
{
var path = $"{fileName}.{fileExtension}";
var expectedResult = DataResult.CreateFailed(errorMessage);
_fakeReaderProvider.GetByExtension(fileExtension).Returns(_fakeReader);
_fakeReader.Read(path).Returns(expectedResult);
var result = _provider.GetFrom(path);
result.ShouldBeEquivalentTo(expectedResult);
}
public DataResult Read(string path)
{
return(DataResult.CreateFailed($"Reader not found for file {path}"));
}