CollectionContainsConstraint

CollectionContainsConstraint tests that an IEnumerable contains an object. If the actual value passed does not implement IEnumerable, an exception is thrown.

Constructor

CollectionContainsConstraint( object )

Syntax

Has.Member( object )
Contains.Item( object )
Does.Contain( object )

Modifiers

...Using(IComparer comparer)
...Using<t>(IComparer<T> comparer)
...Using<t>(Comparison<T> comparer)

Examples of Use

int[] iarray = new int[] { 1, 2, 3 };
string[] sarray = new string[] { "a", "b", "c" };
Assert.That( iarray, Has.Member(3) );
Assert.That( sarray, Has.Member("b") );
Assert.That( sarray, Contains.Item("c") );
Assert.That( sarray, Has.No.Member("x") );    
Assert.That( iarray, Does.Contain(3) );

Notes

1. For references, Has.Member uses object equality to find a member in a collection. To check for an object equal to an item the collection, use Has.Some.EqualTo(...).