public void EnforceRule_Throws_An_ValidationException_When_Identity_Is_Null()
{
// Arrange
var sut = new ExistsIdentitySpecification();
// Assert
Assert.Throws <ValidationException>(() => sut.EnforceRule(null, It.IsAny <string>()));
}
public void EnforceRule_Does_Not_Throw_Any_Exception_When_Identity_Is_Not_Null()
{
// Arrange
var sut = new ExistsIdentitySpecification();
// Act
var exception = Record.Exception(() => sut.EnforceRule(NewIdentity(), It.IsAny <string>()));
// Assert
Assert.Null(exception);
}