public void EqualsShouldReturnExpectedResult()
{
var command = new Command<string>( Console.WriteLine );
var target = new HierarchicalItem<string>( "test", command );
var child = new HierarchicalItem<string>( "test", command );
target.Add( child );
Assert.True( target == new HierarchicalItem<string>( "test", command ) );
Assert.True( target != new HierarchicalItem<string>( "test1", command ) );
Assert.True( target.Equals( new HierarchicalItem<string>( "test", command ) ) );
Assert.False( target.Equals( new HierarchicalItem<string>( "test1", command ) ) );
Assert.True( target.Equals( (object) new HierarchicalItem<string>( "test", command ) ) );
Assert.False( target.Equals( (object) new HierarchicalItem<string>( "test1", command ) ) );
Assert.False( child == target );
Assert.True( child != target );
Assert.False( child.Equals( target ) );
Assert.False( child.Equals( (object) target ) );
var comparer = StringComparer.OrdinalIgnoreCase;
target = new HierarchicalItem<string>( "test", command, comparer );
Assert.True( target == new HierarchicalItem<string>( "TEST", command, comparer ) );
Assert.True( target != new HierarchicalItem<string>( "TEST1", command, comparer ) );
Assert.True( target.Equals( new HierarchicalItem<string>( "TEST", command, comparer ) ) );
Assert.False( target.Equals( new HierarchicalItem<string>( "TEST1", command, comparer ) ) );
Assert.True( target.Equals( (object) new HierarchicalItem<string>( "TEST", command, comparer ) ) );
Assert.False( target.Equals( (object) new HierarchicalItem<string>( "TEST1", command, comparer ) ) );
}
public void WhenValueAndDepthOfTwoItemsAreUnequalTheyShouldYieldDifferentHashCodes()
{
var comparer = new DynamicComparer<Tuple<int, string>>( tuple => tuple.Item1.GetHashCode() );
var command = new Command<string>( Console.WriteLine );
var item1 = new HierarchicalItem<Tuple<int, string>>( new Tuple<int, string>( 2, "0" ), command, comparer );
item1.Add( new HierarchicalItem<Tuple<int, string>>( new Tuple<int, string>( 1, "1" ), command, comparer ) );
var item2 = new HierarchicalItem<Tuple<int, string>>( new Tuple<int, string>( 0, "2" ), command, comparer );
item1[0].Add( item2 );
Assert.NotEqual( item1.Depth, item2.Depth );
Assert.NotEqual( item1.GetHashCode(), item2.GetHashCode() );
}
public void ParentPropertyShouldReturnCorrectObject()
{
var command = new Command<string>( Console.WriteLine );
var target = new HierarchicalItem<string>( "test", command );
Assert.Null( target.Parent );
target.Add( new HierarchicalItem<string>( "1", command ) );
Assert.Equal( target, target[0].Parent );
target[0].Add( new HierarchicalItem<string>( "2", command ) );
Assert.Equal( target[0], target[0][0].Parent );
target[0][0].Add( new HierarchicalItem<string>( "3", command ) );
Assert.Equal( target[0][0], target[0][0][0].Parent );
}
public void TwoItemsWithTheSameValueAtDifferentDepthsShouldYieldDifferentHashCodes()
{
var comparer = new DynamicComparer<Tuple<int, string>>( tuple => tuple.Item1.GetHashCode() );
var command = new Command<string>( Console.WriteLine );
var item1 = new HierarchicalItem<Tuple<int, string>>( new Tuple<int, string>( 1, "0" ), command, comparer );
item1.Add( new HierarchicalItem<Tuple<int, string>>( new Tuple<int, string>( 1, "1" ), command, comparer ) );
var item2 = new HierarchicalItem<Tuple<int, string>>( new Tuple<int, string>( 1, "2" ), command, comparer );
item1[0].Add( item2 );
Assert.Equal( item1.Value.Item1, item2.Value.Item1 );
Assert.NotEqual( item1.Depth, item2.Depth );
Assert.NotEqual( item1.GetHashCode(), item2.GetHashCode() );
}
public void DepthPropertyShouldReturnCorrectLevel()
{
var command = new Command<string>( Console.WriteLine );
var target = new HierarchicalItem<string>( "test", command );
Assert.Equal( 0, target.Depth );
target.Add( new HierarchicalItem<string>( "1", command ) );
Assert.Equal( 1, target[0].Depth );
target[0].Add( new HierarchicalItem<string>( "2", command ) );
Assert.Equal( 2, target[0][0].Depth );
target[0][0].Add( new HierarchicalItem<string>( "3", command ) );
Assert.Equal( 3, target[0][0][0].Depth );
}