public void MergedRestrictionsProperties()
{
var exps = new Expression[]
{
Expression.Constant(false), Expression.Constant(true),
Expression.Equal(Expression.Constant(2), Expression.Constant(3))
};
BindingRestrictions br = BindingRestrictions.Empty;
var restrictions = new List <BindingRestrictions>();
foreach (var exp in exps)
{
BindingRestrictions res = BindingRestrictions.GetExpressionRestriction(exp);
restrictions.Add(res);
br = br.Merge(res);
}
if (BindingRestrictionsDebugViewType == null)
{
return;
}
BindingRestrictionsProxyProxy view = GetDebugViewObject(br);
Assert.False(view.IsEmpty);
Assert.Equal(br.ToExpression().ToString(), view.ToString());
BindingRestrictions[] viewedRestrictions = view.Restrictions;
// Check equal to source restrictions, but not insisting on order.
Assert.Equal(3, viewedRestrictions.Length);
Assert.True(viewedRestrictions.All(r => restrictions.Contains(r)));
}
public void MergedRestrictionsExpressions()
{
var exps = new Expression[]
{
Expression.Constant(false), Expression.Constant(true),
Expression.Equal(Expression.Constant(2), Expression.Constant(3))
};
BindingRestrictions br = BindingRestrictions.Empty;
foreach (var exp in exps)
{
br = br.Merge(BindingRestrictions.GetExpressionRestriction(exp));
}
if (BindingRestrictionsDebugViewType == null)
{
return;
}
BindingRestrictionsProxyProxy view = GetDebugViewObject(br);
// The expression in the view will be a tree of AndAlso nodes.
// If we examine the expression of the restriction a new AndAlso
// will be created, so we strip out the leaf expressions and compare
// with the initial set.
var notAndAlso = new List <Expression>();
Expression vExp = view.Test;
Assert.Equal(ExpressionType.AndAlso, vExp.NodeType);
Stack <Expression> toSplit = new Stack <Expression>();
for (;;)
{
if (vExp.NodeType == ExpressionType.AndAlso)
{
var bin = (BinaryExpression)vExp;
toSplit.Push(bin.Left);
vExp = bin.Right;
}
else
{
notAndAlso.Add(vExp);
if (toSplit.Count == 0)
{
break;
}
vExp = toSplit.Pop();
}
}
// Check equal to source expressions, but not insisting on order.
Assert.Equal(3, notAndAlso.Count);
Assert.True(notAndAlso.All(ex => exps.Contains(ex)));
}
public void EmptyRestiction()
{
BindingRestrictions empty = BindingRestrictions.Empty;
BindingRestrictionsProxyProxy view = GetDebugViewObject(empty);
Assert.True(view.IsEmpty);
BindingRestrictions[] restrictions = view.Restrictions;
Assert.Equal(1, restrictions.Length);
Assert.Same(empty, restrictions[0]);
Assert.Same(empty.ToExpression(), view.Test);
Assert.Equal(empty.ToExpression().ToString(), view.ToString());
}
public void CustomRestriction()
{
ConstantExpression exp = Expression.Constant(false);
BindingRestrictions custom = BindingRestrictions.GetExpressionRestriction(exp);
BindingRestrictionsProxyProxy view = GetDebugViewObject(custom);
Assert.False(view.IsEmpty);
BindingRestrictions[] restrictions = view.Restrictions;
Assert.Equal(1, restrictions.Length);
Assert.Same(custom, restrictions[0]);
Assert.NotSame(BindingRestrictions.Empty.ToExpression(), view.Test);
Assert.Same(exp, view.Test);
Assert.Equal(exp.ToString(), view.ToString());
}
public void EmptyRestiction()
{
if (BindingRestrictionsDebugViewType == null)
{
throw new SkipTestException("Didn't find DebuggerTypeProxyAttribute on BindingRestrictions.");
}
BindingRestrictions empty = BindingRestrictions.Empty;
BindingRestrictionsProxyProxy view = GetDebugViewObject(empty);
Assert.True(view.IsEmpty);
BindingRestrictions[] restrictions = view.Restrictions;
Assert.Equal(1, restrictions.Length);
Assert.Same(empty, restrictions[0]);
Assert.Same(empty.ToExpression(), view.Test);
Assert.Equal(empty.ToExpression().ToString(), view.ToString());
}
public void CustomRestriction()
{
if (BindingRestrictionsDebugViewType == null)
{
throw new SkipTestException("Didn't find DebuggerTypeProxyAttribute on BindingRestrictions.");
}
ConstantExpression exp = Expression.Constant(false);
BindingRestrictions custom = BindingRestrictions.GetExpressionRestriction(exp);
BindingRestrictionsProxyProxy view = GetDebugViewObject(custom);
Assert.False(view.IsEmpty);
BindingRestrictions[] restrictions = view.Restrictions;
Assert.Equal(1, restrictions.Length);
Assert.Same(custom, restrictions[0]);
Assert.NotSame(BindingRestrictions.Empty.ToExpression(), view.Test);
Assert.Same(exp, view.Test);
Assert.Equal(exp.ToString(), view.ToString());
}
