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//===- llvm/unittest/ADT/SmallSetTest.cpp ---------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// CompactSet unit tests.
//
//===----------------------------------------------------------------------===//
#include <library/cpp/yt/small_containers/compact_set.h>
#include <library/cpp/testing/gtest/gtest.h>
#include <string>
namespace NYT {
namespace {
////////////////////////////////////////////////////////////////////////////////
TEST(TCompactSetTest, Insert)
{
TCompactSet<int, 4> s1;
for (int i = 0; i < 4; i++)
s1.insert(i);
for (int i = 0; i < 4; i++)
s1.insert(i);
EXPECT_EQ(4u, s1.size());
for (int i = 0; i < 4; i++)
EXPECT_EQ(1u, s1.count(i));
EXPECT_EQ(0u, s1.count(4));
}
TEST(TCompactSetTest, Grow)
{
TCompactSet<int, 4> s1;
for (int i = 0; i < 8; i++)
s1.insert(i);
EXPECT_EQ(8u, s1.size());
for (int i = 0; i < 8; i++)
EXPECT_EQ(1u, s1.count(i));
EXPECT_EQ(0u, s1.count(8));
}
TEST(TCompactSetTest, Erase)
{
TCompactSet<int, 4> s1;
for (int i = 0; i < 8; i++)
s1.insert(i);
EXPECT_EQ(8u, s1.size());
// Remove elements one by one and check if all other elements are still there.
for (int i = 0; i < 8; i++) {
EXPECT_EQ(1u, s1.count(i));
EXPECT_TRUE(s1.erase(i));
EXPECT_EQ(0u, s1.count(i));
EXPECT_EQ(8u - i - 1, s1.size());
for (int j = i + 1; j < 8; j++)
EXPECT_EQ(1u, s1.count(j));
}
EXPECT_EQ(0u, s1.count(8));
}
TEST(TCompactSetTest, IteratorInt)
{
TCompactSet<int, 4> s1;
// Test the 'small' case.
for (int i = 0; i < 3; i++)
s1.insert(i);
std::vector<int> V(s1.begin(), s1.end());
// Make sure the elements are in the expected order.
std::sort(V.begin(), V.end());
for (int i = 0; i < 3; i++)
EXPECT_EQ(i, V[i]);
// Test the 'big' case by adding a few more elements to switch to std::set
// internally.
for (int i = 3; i < 6; i++)
s1.insert(i);
V.assign(s1.begin(), s1.end());
// Make sure the elements are in the expected order.
std::sort(V.begin(), V.end());
for (int i = 0; i < 6; i++)
EXPECT_EQ(i, V[i]);
}
TEST(TCompactSetTest, IteratorString)
{
// Test CompactSetIterator for TCompactSet with a type with non-trivial
// ctors/dtors.
TCompactSet<std::string, 2> s1;
s1.insert("str 1");
s1.insert("str 2");
s1.insert("str 1");
std::vector<std::string> V(s1.begin(), s1.end());
std::sort(V.begin(), V.end());
EXPECT_EQ(2u, s1.size());
EXPECT_EQ("str 1", V[0]);
EXPECT_EQ("str 2", V[1]);
s1.insert("str 4");
s1.insert("str 0");
s1.insert("str 4");
V.assign(s1.begin(), s1.end());
// Make sure the elements are in the expected order.
std::sort(V.begin(), V.end());
EXPECT_EQ(4u, s1.size());
EXPECT_EQ("str 0", V[0]);
EXPECT_EQ("str 1", V[1]);
EXPECT_EQ("str 2", V[2]);
EXPECT_EQ("str 4", V[3]);
}
TEST(TCompactSetTest, IteratorIncMoveCopy)
{
// Test CompactSetIterator for TCompactSet with a type with non-trivial
// ctors/dtors.
TCompactSet<std::string, 2> s1;
s1.insert("str 1");
s1.insert("str 2");
auto Iter = s1.begin();
EXPECT_EQ("str 1", *Iter);
++Iter;
EXPECT_EQ("str 2", *Iter);
s1.insert("str 4");
s1.insert("str 0");
auto Iter2 = s1.begin();
Iter = std::move(Iter2);
EXPECT_EQ("str 0", *Iter);
}
// These test weren't taken from llvm.
TEST(TCompactSetTest, Empty)
{
TCompactSet<int, 10> v;
EXPECT_TRUE(v.empty());
auto data = {1, 2, 3, 4, 5};
v.insert(data.begin(), data.end()); // not crossing size threshold
v.erase(4);
v.erase(2);
v.erase(3);
v.erase(5);
v.erase(1);
EXPECT_TRUE(v.empty());
auto data2 = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
v.insert(data2.begin(), data2.end()); // crossing size threshold
v.erase(7);
v.erase(3);
v.erase(1);
v.erase(10);
v.erase(9);
v.erase(0);
v.erase(2);
v.erase(6);
v.erase(4);
v.erase(5);
v.erase(8);
EXPECT_TRUE(v.empty());
}
TEST(TCompactSetTest, ForEach)
{
TCompactSet<int, 10> v;
auto data = {10, 9, 3, 4, 1, 5, 6, 8};
v.insert(data.begin(), data.end());
std::vector<int> buf(v.begin(), v.end());
std::vector<int> expected{1, 3, 4, 5, 6, 8, 9, 10};
EXPECT_EQ(expected, buf);
auto data2 = {7, 1, 2, 0};
v.insert(data2.begin(), data2.end());
buf.assign(v.begin(), v.end());
expected = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
EXPECT_EQ(expected, buf);
}
////////////////////////////////////////////////////////////////////////////////
} // namespace
} // namespace NYT
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