mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 23:50:19 +00:00
88 lines
2 KiB
C++
88 lines
2 KiB
C++
/*
|
|
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibTest/TestCase.h>
|
|
|
|
#include <AK/Random.h>
|
|
#include <AK/RedBlackTree.h>
|
|
|
|
TEST_CASE(construct)
|
|
{
|
|
RedBlackTree<int, int> empty;
|
|
EXPECT(empty.is_empty());
|
|
EXPECT(empty.size() == 0);
|
|
}
|
|
|
|
TEST_CASE(ints)
|
|
{
|
|
RedBlackTree<int, int> ints;
|
|
ints.insert(1, 10);
|
|
ints.insert(3, 20);
|
|
ints.insert(2, 30);
|
|
EXPECT_EQ(ints.size(), 3u);
|
|
EXPECT_EQ(*ints.find(3), 20);
|
|
EXPECT_EQ(*ints.find(2), 30);
|
|
EXPECT_EQ(*ints.find(1), 10);
|
|
EXPECT(!ints.remove(4));
|
|
EXPECT(ints.remove(2));
|
|
EXPECT(ints.remove(1));
|
|
EXPECT(ints.remove(3));
|
|
EXPECT_EQ(ints.size(), 0u);
|
|
}
|
|
|
|
TEST_CASE(largest_smaller_than)
|
|
{
|
|
RedBlackTree<int, int> ints;
|
|
ints.insert(1, 10);
|
|
ints.insert(11, 20);
|
|
ints.insert(21, 30);
|
|
EXPECT_EQ(ints.size(), 3u);
|
|
EXPECT_EQ(*ints.find_largest_not_above(3), 10);
|
|
EXPECT_EQ(*ints.find_largest_not_above(17), 20);
|
|
EXPECT_EQ(*ints.find_largest_not_above(22), 30);
|
|
EXPECT_EQ(ints.find_largest_not_above(-5), nullptr);
|
|
}
|
|
|
|
TEST_CASE(key_ordered_iteration)
|
|
{
|
|
constexpr auto amount = 10000;
|
|
RedBlackTree<int, size_t> test;
|
|
Array<int, amount> keys {};
|
|
|
|
// generate random key order
|
|
for (int i = 0; i < amount; i++) {
|
|
keys[i] = i;
|
|
}
|
|
for (size_t i = 0; i < amount; i++) {
|
|
swap(keys[i], keys[get_random<size_t>() % amount]);
|
|
}
|
|
|
|
// insert random keys
|
|
for (size_t i = 0; i < amount; i++) {
|
|
test.insert(keys[i], keys[i]);
|
|
}
|
|
|
|
// check key-ordered iteration
|
|
size_t index = 0;
|
|
for (auto& value : test) {
|
|
EXPECT(value == index++);
|
|
}
|
|
|
|
// ensure we can remove all of them (aka, tree structure is not destroyed somehow)
|
|
for (size_t i = 0; i < amount; i++) {
|
|
EXPECT(test.remove(i));
|
|
}
|
|
}
|
|
|
|
TEST_CASE(clear)
|
|
{
|
|
RedBlackTree<size_t, size_t> test;
|
|
for (size_t i = 0; i < 1000; i++) {
|
|
test.insert(i, i);
|
|
}
|
|
test.clear();
|
|
EXPECT_EQ(test.size(), 0u);
|
|
}
|