private static void TestCompleteParse(string input, double expected)
{
int position = 0;
double parsed = CharsParser.Parse(input.ToCharArray(), 0, input.Length, out position);
Assert.That(parsed, Is.EqualTo(expected));
Assert.That(position, Is.EqualTo(input.Length)); // Make sure it read everything
}
public void TestInvalidStartIndex()
{
int end = 1;
Assert.That(() => CharsParser.Parse(Empty, 1, 0, out end),
Throws.TypeOf <ArgumentOutOfRangeException>());
Assert.That(end, Is.EqualTo(1)); // Make sure end wasn't touched
Assert.That(() => CharsParser.Parse(Empty, -1, 0, out end),
Throws.TypeOf <ArgumentOutOfRangeException>());
Assert.That(end, Is.EqualTo(1)); // Make sure end wasn't touched
}
public void TestEmptyAndNullStrings()
{
int end = 1;
Assert.That(() => CharsParser.Parse(null, 0, 0, out end),
Throws.TypeOf <ArgumentNullException>());
Assert.That(end, Is.EqualTo(1)); // Make sure end wasn't touched
//Assert.That(CharsToDouble.Parse(string.Empty, 0, out end), Is.EqualTo(default(double)));
Assert.That(() => CharsParser.Parse(Empty, 0, 0, out end),
Throws.TypeOf <ArgumentOutOfRangeException>());
//Assert.That(end, Is.EqualTo(0));
}
public void TestInvalidFormats()
{
// Put the spaces at the start to make sure it doesn't skip anything.
var formats = new[]
{
" .",
" ++0",
" +"
};
foreach (var format in formats)
{
int position;
var formatArray = format.ToCharArray();
double value = CharsParser.Parse(formatArray, 0, formatArray.Length, out position);
Assert.That(value, Is.EqualTo(default(double)));
Assert.That(position, Is.EqualTo(0)); // Make sure it read nothing
}
}
public void TestPartiallyValid()
{
var formats = new[]
{
" 1e",
" 1e.0",
"1.e",
" 1e++0",
" 1ee0"
};
foreach (var format in formats)
{
int position;
var formatArray = format.ToCharArray();
double value = CharsParser.Parse(formatArray, 0, formatArray.Length, out position);
Assert.That(value, Is.EqualTo(1.0));
Assert.That(position, Is.EqualTo(2)); // Make sure it read as much as it could
}
}
public void TestStartIndex()
{
var formats = new[]
{
"###0.00###",
"###+0.0###",
"###-0.0###",
"###+0e0###",
"###-0e0###",
"###0e-0###",
"###.0e0.##",
};
foreach (var format in formats)
{
int position;
var formatArray = format.ToCharArray();
double value = CharsParser.Parse(formatArray, 3, formatArray.Length, out position);
Assert.That(value, Is.EqualTo(0.0));
Assert.That(position, Is.EqualTo(7)); // Make sure it read as much as it could
}
}