public void NonnumericStringReturnsNull()
{
const string NonnumericString = "XYZ";
var result = NonnumericString.ConvertToNullable().Int32.ParseInvariant();
result.HasValue.Should().BeFalse();
}
public void NonnumericStringReturnsDefault()
{
const string NonnumericString = "XYZ";
const int DefaultValue = 5;
var result = NonnumericString.ConvertWithDefaultTo().Int32.ParseInvariant(DefaultValue);
result.Should().Be(DefaultValue);
}
public void NonnumericStringThrows()
{
const string NonnumericString = "XYZ";
Assert.Throws <FormatException>(() => NonnumericString.ConvertTo().Int32.ParseInvariant());
}