Condition Tests

Methods that test a specific condition are named for the condition they test and take the value tested as their first argument and, optionally a message as the second. The following methods are provided:

Assert.IsTrue( bool condition );
Assert.IsTrue( bool condition, string message );
Assert.IsTrue( bool condition, string message, object[] parms );

Assert.IsFalse( bool condition);
Assert.IsFalse( bool condition, string message );
Assert.IsFalse( bool condition, string message, object[] parms );

Assert.IsNull( object anObject );
Assert.IsNull( object anObject, string message );
Assert.IsNull( object anObject, string message, object[] parms );

Assert.IsNotNull( object anObject );
Assert.IsNotNull( object anObject, string message );
Assert.IsNotNull( object anObject, string message, object[] parms );

Assert.IsNaN( double aDouble );
Assert.IsNaN( double aDouble, string message );
Assert.IsNaN( double aDouble, string message, object[] parms );

Assert.IsEmpty( string aString );
Assert.IsEmpty( string aString, string message );
Assert.IsEmpty( string aString, string message,
          params object[] args );

Assert.IsNotEmpty( string aString );
Assert.IsNotEmpty( string aString, string message );
Assert.IsNotEmpty( string aString, string message,
          params object[] args );

Assert.IsEmpty( ICollection collection );
Assert.IsEmpty( ICollection collection, string message );
Assert.IsEmpty( ICollection collection, string message,
          params object[] args );

Assert.IsNotEmpty( ICollection collection );
Assert.IsNotEmpty( ICollection collection, string message );
Assert.IsNotEmpty( ICollection collection, string message,
          params object[] args );

Note that Assert.IsEmpty and Assert.IsNotEmpty may be used to test either a string or a collection.