public void GetOperation_FileWithInvalidArgumentOperation_Throw(string textFromFile)
{
IFileWrapper stubFileWrapper = Substitute.For <IFileWrapper>();
stubFileWrapper.ReadAllText(Arg.Any <string>()).Returns(textFromFile);
var sut = new GetterOperationFromFile("path", stubFileWrapper);
var ex = Assert.Throws <InvalidOperationException>(() =>
sut.GetOperation());
}
public void GetOperation_ReadFromFile_FileMethodIsCalled(string textFromFile)
{
IFileWrapper mockFileWrapper = Substitute.For <IFileWrapper>();
mockFileWrapper.ReadAllText(Arg.Any <string>()).Returns(textFromFile);
var sut = new GetterOperationFromFile("path", mockFileWrapper);
IOperation operation = sut.GetOperation();
mockFileWrapper.Received().ReadAllText(Arg.Any <string>());
}
public void GetOperation_ValidFileWithDivideOperation_ReturnDivedeOperation(string textFromFile)
{
IFileWrapper stubFileWrapper = Substitute.For <IFileWrapper>();
stubFileWrapper.ReadAllText(Arg.Any <string>()).Returns(textFromFile);
var sut = new GetterOperationFromFile("path", stubFileWrapper);
IOperation operation = sut.GetOperation();
Assert.AreEqual(1, operation.FirstNumber);
Assert.AreEqual(1, operation.SecondNumber);
Assert.IsInstanceOf <DivideOperation>(operation);
}
