public void NumericStringShouldNeverViolateConstraint()
{
// Fixture setup
var generator = from n in Arb.Generate <uint>() select n.ToString();
var constraint = new DigitStringConstraint();
// Exercise system and verify outcome
Prop.ForAll(
generator.ToArbitrary(),
s => constraint.Check(s).Violated.Should().BeFalse())
.QuickCheckThrowOnFailure();
}
public void NotNumericStringStringShouldAlwaysViolateConstraint()
{
// Fixture setup
var generator = from s in Arb.Generate <string>() where s != null && !s.Any(char.IsDigit) select s;
var constraint = new DigitStringConstraint();
// Exercise system and verify outcome
Prop.ForAll(generator.ToArbitrary(), s =>
{
var result = constraint.Check(s);
result.Violated.Should().BeTrue();
result.Message.Should().Be("String must contains only digit symbols.");
}).QuickCheckThrowOnFailure();
}