public void ValidateNullableSByteNotToBeNegative()
{
// Given
var validator = new NullableDoubleInverseValidator(null);
// When
validator.BeNegative();
// Then
Assert.True(true);
}
public void ValidateSByteNotToBeNegativeViolated()
{
// Given
var validator = new NullableDoubleInverseValidator(-42);
// When
var exception = Assert.Throws <XunitException>(() => validator.BeNegative(because: "that's the bottom line"));
// Then
Assert.NotNull(exception);
var rn = Environment.NewLine;
Assert.Equal(
$"{rn}validator{rn}is \"-42\"{rn}but was expected not to have a negative value{rn}because that's the bottom line",
exception.UserMessage);
}