public void When_reading_non_padded_hexadecimal_string_it_should_throw(string dataToParse, params byte[] expectedData)
{
// Arrange
_parser = CreateSubject(dataToParse);
int position = 0;
// Act
Func <byte> readByte = () => _parser.ReadByte();
foreach (byte expectedByte in expectedData)
{
position += 2;
readByte.Should()
.NotThrow("two or more characters are still on the stream")
.Which.Should()
.Be(expectedByte);
}
// Assert
_parser.AtEndOfStream()
.Should()
.BeFalse("the last char is not read yet");
ProtocolReaderException ex = readByte
.Should()
.Throw <ProtocolReaderException>("the stream does not have enough hex chars left")
.Which;
ex.Message.Should().StartWith("Reached end of stream");
ex.Position.Should().Be(position);
ex.Length.Should().Be(dataToParse.Length);
_parser.AtEndOfStream().Should().BeTrue();
}
public void When_reading_encapsulated_text_that_does_not_start_with_char_should_throw()
{
// Arrange
_parser = CreateSubject("data");
// Act
Action act = () => _parser.ReadEncapsulatedString('|');
// Assert
ProtocolReaderException ex = act.Should().Throw <ProtocolReaderException>().Which;
ex.Position.Should().Be(0);
ex.Length.Should().Be(4);
}
public void When_reading_byte_from_data_that_is_not_hexadecimal_it_should_throw()
{
// Arrange
_parser = CreateSubject("Zs");
// Act
Action readByte = () => _parser.ReadByte();
// Assert
ProtocolReaderException ex = readByte.Should()
.Throw <ProtocolReaderException>()
.Which;
ex.InnerException.Should().BeOfType <FormatException>()
.Which.Message.Should().Be("Could not find any recognizable digits.");
ex.Position.Should().Be(0);
ex.Length.Should().Be(2);
_parser.AtEndOfStream().Should().BeTrue();
}
