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Condition Constraints (NUnit 2.4)

ConditionConstraints test a specific condition and are named for the condition they test. They verify that the actual value satisfies the condition. The following condition helpers are provided.

Syntax Helper	Constructor	Operation
Is.Null	EqualConstraint( null )	tests for null
Is.True	EqualConstraint( true )	tests for true
Is.False	EqualConstraint( false )	tests for false
Is.NaN	EqualConstraint( double.NaN ) EqualConstraint( float.NaN )	tests for floating NaN
Is.Empty	EmptyConstraint()	tests for empty string or collection
Is.Unique	UniqueItemsConstraint()	tests that collection contains unique items

Examples

Assert.That( anObject, Is.Null );
Assert.That( anObject, Is.Not.Null );
Assert.That( condition, Is.True );
Assert.That( condition, Is.False );
Assert.That( aDouble, Is.NaN );
Assert.That( aDouble, Is.Not.NaN );
Assert.That( aString, Is.Empty );
Assert.That( collection, Is.Empty );
Assert.That( collection, Is.Unique );

// Using inheritance
Expect( aDouble, NaN );
Expect( collection, Unique );