/// <summary>
/// Creates a specification that demands that at least one of the
/// <paramref name="left"/> and <paramref name="right"/> specifications are satisfied.
/// </summary>
/// <param name="left">
/// The left hand side of the operation.
/// </param>
/// <param name="right">
/// The right hand side of the operation
/// </param>
/// <typeparam name="T">
/// The type of entity this specification checks.
/// </typeparam>
/// <returns>
/// An <see cref="ISpecification{T}"/> representing the logical OR operation of the
/// specifications <paramref name="left"/> and <paramref name="right"/>.
/// </returns>
/// <exception cref="ArgumentNullException">
/// If <paramref name="left"/> or <paramref name="right"/> is null.
/// </exception>
public static ISpecification <T> Or <T>(this ISpecification <T> left, ISpecification <T> right)
{
RequireThat.NotNull(left, "left");
RequireThat.NotNull(right, "right");
return(new OrSpecification <T>(left, right));
}
public void WhenNullableWithValue_DoesNotThrow()
{
RequireThat.NotNull(new Nullable <int>(1), "name");
}
public void WhenNullableWithoutValue_ThrowsException()
{
Assert.Throws <ArgumentNullException>(
() => RequireThat.NotNull(new Nullable <int>(), "name"));
}
public void WhenNullNullable_ThrowsException()
{
Assert.Throws <ArgumentNullException>(
() => RequireThat.NotNull(null as int?, "name"));
}
public void WhenNonNullObject_DoesNotThrowException()
{
RequireThat.NotNull(new object(), "name");
}
public void WhenNullObject_ThrowsException()
{
Assert.Throws <ArgumentNullException>(
() => RequireThat.NotNull(null as object, "name"));
}
/// <summary>
/// Creates a specification that demands that the <paramref name="source"/>
/// specification is not satisfied.
/// </summary>
/// <param name="source">
/// The source specification.
/// </param>
/// <typeparam name="T">
/// The type of entity this specification checks.
/// </typeparam>
/// <returns>
/// An <see cref="ISpecification{T}"/> representing the logical NOT operation of
/// <paramref name="source"/>.
/// </returns>
/// <exception cref="ArgumentNullException">
/// If <paramref name="source"/> is null.
/// </exception>
public static ISpecification <T> Not <T>(this ISpecification <T> source)
{
RequireThat.NotNull(source, "source");
return(new NotSpecification <T>(source));
}
