public void GetNumber()
{
var tp = new TestParser();
tp.SetContext(" 1 1.5/*test*/.5 0.123 1234 -.5 -12 . ", 0);
tp.ExpectNumber("1");
tp.ExpectNumber("1.5");
tp.ExpectNumber("0.5");
tp.ExpectNumber("0.123");
tp.ExpectNumber("1234");
tp.ExpectNumber("-0.5");
tp.ExpectNumber("-12");
tp.ExpectNumber(null);
tp = new TestParser();
tp.SetContext("-", 0);
tp.ExpectNumber(null);
tp = new TestParser();
tp.SetContext("12.5.1", 0);
tp.ExpectNumber("12.5");
tp = new TestParser();
tp.SetContext("-x", 0);
tp.ExpectNumber(null);
tp.ExpectName("-x");
}