Constraint:

Example:

Object

Anything

Is.Anything()

Equal

Is.Equal(3)

Not Equal

Is.NotEqual(3) or !Is.Equal(3)

Null

Is.Null()

Not Null

Is.NotNull()

Type Of

Is.TypeOf(typeof(string))

Greater Than

Is.GreaterThan(10)

Greater Than Or Equal

Is.GreaterThanOrEqual(10)

Less Than

Is.LessThan(10)

Less Than Or Eqaul

Is.LessThanOrEqual(10)

Property

Equal To Value

Property.Value("Length",0)

Null

Property.IsNull("InnerException")

Not Null

Property.IsNotNull("InnerException")

List

Is In List
[the parameter is a collection that contains this value]

List.IsIn(4)

One Of
[parameter equal to one of the objects in this list]

List.OneOf(new int[]{3,4,5})

Equal

List.Equal(new int[]{4,5,6})

Text

Starts With

Text.StartsWith("Hello")

Ends With

Text.EndsWith("World")

Contains

Text.Contains("or")

Like
[perform regular expression validation]

Text.Like("Rhino|rhino|Rhinoceros|rhinoceros" )

Operator Overloading

And - operator &

Text.StartsWith("Hello") & Text.Contains("bar")

Or - operator |

Text.StartsWith("Hello") & Text.Contains("bar")

Not - operator !

!Text.StartsWith("Hello")