public void ReturnTrueAndMatchMessage_WhenArgumentIsFloatNaN()
{
// Arrange.
float value = float.NaN;
// Act.
IValidationPredicateResult result = FloatNaNValidationPredicate.Instance.Match(value);
// Assert.
Assert.IsTrue(result.IsMatch);
Assert.AreEqual("The argument is NaN.", result.Message);
}