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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
//
//===----------------------------------------------------------------------===//
//
// SmallSet unit tests.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SmallSet.h"
#include "gtest/gtest.h"
#include <string>
using namespace llvm;
TEST(SmallSetTest, Insert) {
SmallSet<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(SmallSetTest, Grow) {
SmallSet<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(SmallSetTest, Erase) {
SmallSet<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(SmallSetTest, IteratorInt) {
SmallSet<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(SmallSetTest, IteratorString) {
// Test SmallSetIterator for SmallSet with a type with non-trivial
// ctors/dtors.
SmallSet<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(SmallSetTest, IteratorIncMoveCopy) {
// Test SmallSetIterator for SmallSet with a type with non-trivial
// ctors/dtors.
SmallSet<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);
}
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