public void ReturnTrueAndMatchMessage_WhenArgumentIsDoubleNegativeInfinity()
{
// Arrange.
double value = double.NegativeInfinity;
// Act.
IValidationPredicateResult result = DoubleInfinityValidationPredicate.Instance.Match(value);
// Assert.
Assert.IsTrue(result.IsMatch);
Assert.AreEqual("The argument is infinity.", result.Message);
}