public void ShouldUseFirstWorksheetNameWhenBuildIsCalledWithoutParams()
{
_excelDataProvider.Stub(x => x.GetWorksheetNames()).Return(new List <string> {
"a", "b"
});
_excelDataProvider.Stub(x => x.GetWorksheetFormulas("a")).Return(new Dictionary <string, string>());
var chain = _builder.Build();
_excelDataProvider.AssertWasCalled(x => x.GetWorksheetFormulas("a"));
}