public void Should_parse_Int(int expectedValue)
{
var sequence = expectedValue.ToString().ToReadOnlySequence();
var worked = PipeParser.TryParsePositiveInteger(sequence, out var parsedInt);
Assert.True(worked);
Assert.Equal(expectedValue, parsedInt);
}
public void Should_parse_Int_with_leading_zero()
{
var expectedValue = 1;
var sequence = "0000000001".ToReadOnlySequence();
var worked = PipeParser.TryParsePositiveInteger(sequence, out var parsedInt);
Assert.True(worked);
Assert.Equal(expectedValue, parsedInt);
}
public void Should_not_parse_When_negative_or_letter(string value)
{
var sequence = value.ToReadOnlySequence();
var worked = PipeParser.TryParsePositiveDecimal(sequence, out var _);
Assert.False(worked);
worked = PipeParser.TryParsePositiveLong(sequence, out var _);
Assert.False(worked);
worked = PipeParser.TryParsePositiveInteger(sequence, out var _);
Assert.False(worked);
}
public void Should_advance_by_sequence_by_comma()
{
var input = "12,34,56,78,9";
var reader = input.ToPipeReader();
var worked = PipeParser.TryParsePositiveInteger(reader, out var parsed);
Assert.True(worked);
Assert.Equal(12, parsed);
worked = PipeParser.TryParsePositiveInteger(reader, out parsed);
Assert.True(worked);
Assert.Equal(34, parsed);
}
public void Should_stop_at_comma()
{
var input = "12345,6789";
var reader = input.ToPipeReader();
var possibleSequence = PipeParser.GetNextSequence(reader);
Assert.NotNull(possibleSequence);
var sequence = possibleSequence.Value;
Assert.Equal(5, sequence.Length);
var worked = PipeParser.TryParsePositiveInteger(sequence, out var parsed);
Assert.True(worked);
Assert.Equal(12345, parsed);
}
public void Should_not_parse_Int_when_not_digit()
{
for (int i = 0; i < char.MaxValue; i++)
{
char c = (char)i;
var charAsString = c.ToString().ToReadOnlySequence();
if (c >= '0' && c <= '9')
{
var worked = PipeParser.TryParsePositiveInteger(charAsString, out var _);
Assert.True(worked);
}
else
{
var worked = PipeParser.TryParsePositiveInteger(charAsString, out var _);
Assert.False(worked);
}
}
}