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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Not a portable test
// Precondition: __x->__left_ != nullptr
// template <class _NodePtr>
// void
// __tree_right_rotate(_NodePtr __x);
#include <__tree>
#include <cassert>
struct Node
{
Node* __left_;
Node* __right_;
Node* __parent_;
Node() : __left_(), __right_(), __parent_() {}
};
void
test1()
{
Node root;
Node x;
Node y;
root.__left_ = &x;
x.__left_ = &y;
x.__right_ = 0;
x.__parent_ = &root;
y.__left_ = 0;
y.__right_ = 0;
y.__parent_ = &x;
std::__tree_right_rotate(&x);
assert(root.__parent_ == 0);
assert(root.__left_ == &y);
assert(root.__right_ == 0);
assert(y.__parent_ == &root);
assert(y.__left_ == 0);
assert(y.__right_ == &x);
assert(x.__parent_ == &y);
assert(x.__left_ == 0);
assert(x.__right_ == 0);
}
void
test2()
{
Node root;
Node x;
Node y;
Node a;
Node b;
Node c;
root.__left_ = &x;
x.__left_ = &y;
x.__right_ = &c;
x.__parent_ = &root;
y.__left_ = &a;
y.__right_ = &b;
y.__parent_ = &x;
a.__parent_ = &y;
b.__parent_ = &y;
c.__parent_ = &x;
std::__tree_right_rotate(&x);
assert(root.__parent_ == 0);
assert(root.__left_ == &y);
assert(root.__right_ == 0);
assert(y.__parent_ == &root);
assert(y.__left_ == &a);
assert(y.__right_ == &x);
assert(x.__parent_ == &y);
assert(x.__left_ == &b);
assert(x.__right_ == &c);
assert(a.__parent_ == &y);
assert(a.__left_ == 0);
assert(a.__right_ == 0);
assert(b.__parent_ == &x);
assert(b.__left_ == 0);
assert(b.__right_ == 0);
assert(c.__parent_ == &x);
assert(c.__left_ == 0);
assert(c.__right_ == 0);
}
int main()
{
test1();
test2();
}
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