public void check_contains_feature()
{
DForm form = new DForm();
OpenQuestion q1 = new OpenQuestion( "Q1" );
OpenQuestion q2 = new OpenQuestion( "Q2" );
OpenQuestion q3 = new OpenQuestion( "Q3" );
OpenQuestion q4 = new OpenQuestion( "Q4" );
q4.Parent = q3;
q3.Parent = q2;
q2.Parent = q1;
Assert.IsTrue( q1.Contains( q4 ) );
}
public void check_questions_index_changed()
{
DForm form = new DForm( "Title", "Nunit" );
QuestionBase q1 = new OpenQuestion( "1st Question" );
QuestionBase q2 = new OpenQuestion( "2nd Question" );
QuestionBase q3 = new OpenQuestion( "3rd Question" );
QuestionBase q4 = new OpenQuestion( "4th Question" );
q1.AddNewQuestion( q2 );
q1.AddNewQuestion( q3 );
q1.AddNewQuestion( q4 );
Assert.That( q2.Index, Is.EqualTo( 0 ) );
Assert.That( q3.Index, Is.EqualTo( 1 ) );
Assert.That( q4.Index, Is.EqualTo( 2 ) );
Assert.Throws<ArgumentException>( () => q3.Index = -1 );
Assert.Throws<IndexOutOfRangeException>( () => q2.Index = 3 );
Assert.DoesNotThrow( () => q2.Index = 2 );
Assert.IsTrue( q2.Index == 2 && q4.Index == 1 );
Assert.DoesNotThrow( () => q2.Parent = null );
Assert.IsTrue( q2.Index == -1 && !q1.Contains(q2) );
q2.Parent = q1;
Assert.AreEqual( 2, q2.Index );
}