public void ReverserImplementation_reverse_reads_input_file()
{
// Given
var fileReaderMock = new Mock<IFileReader>();
fileReaderMock.Setup(fr => fr.Read(It.IsAny<string>())).Returns(string.Empty).Verifiable();
var fileWriterStub = new Mock<IFileWriter>();
fileWriterStub.Setup(fw => fw.Write(It.IsAny<string>(), It.IsAny<string>()));
var reverser = new ReverserImplementation(fileReaderMock.Object, fileWriterStub.Object);
// When
reverser.Reverse(string.Empty, string.Empty);
// Then
fileReaderMock.Verify();
}
public void ReverserImplementation_reverse_writes_reversed_input_to_output_file()
{
// Given
var content = Guid.NewGuid().ToString();
var expected = new string(content.Reverse().ToArray());
var fileReaderStub = new Mock<IFileReader>();
fileReaderStub.Setup(fr => fr.Read(It.IsAny<string>())).Returns(content);
var fileWriterMock = new Mock<IFileWriter>();
fileWriterMock.Setup(fw => fw.Write(It.IsAny<string>(), expected)).Verifiable();
var reverser = new ReverserImplementation(fileReaderStub.Object, fileWriterMock.Object);
// When
reverser.Reverse(string.Empty, string.Empty);
// Then
fileWriterMock.Verify();
}