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145 lines
3.3 KiB
C++
145 lines
3.3 KiB
C++
//===- llvm/unittest/ADT/SmallSetTest.cpp ------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// SmallSet unit tests.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/SmallSet.h"
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#include "gtest/gtest.h"
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#include <string>
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using namespace llvm;
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TEST(SmallSetTest, Insert) {
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SmallSet<int, 4> s1;
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for (int i = 0; i < 4; i++)
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s1.insert(i);
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for (int i = 0; i < 4; i++)
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s1.insert(i);
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EXPECT_EQ(4u, s1.size());
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for (int i = 0; i < 4; i++)
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EXPECT_EQ(1u, s1.count(i));
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EXPECT_EQ(0u, s1.count(4));
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}
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TEST(SmallSetTest, Grow) {
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SmallSet<int, 4> s1;
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for (int i = 0; i < 8; i++)
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s1.insert(i);
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EXPECT_EQ(8u, s1.size());
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for (int i = 0; i < 8; i++)
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EXPECT_EQ(1u, s1.count(i));
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EXPECT_EQ(0u, s1.count(8));
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}
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TEST(SmallSetTest, Erase) {
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SmallSet<int, 4> s1;
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for (int i = 0; i < 8; i++)
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s1.insert(i);
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EXPECT_EQ(8u, s1.size());
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// Remove elements one by one and check if all other elements are still there.
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for (int i = 0; i < 8; i++) {
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EXPECT_EQ(1u, s1.count(i));
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EXPECT_TRUE(s1.erase(i));
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EXPECT_EQ(0u, s1.count(i));
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EXPECT_EQ(8u - i - 1, s1.size());
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for (int j = i + 1; j < 8; j++)
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EXPECT_EQ(1u, s1.count(j));
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}
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EXPECT_EQ(0u, s1.count(8));
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}
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TEST(SmallSetTest, IteratorInt) {
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SmallSet<int, 4> s1;
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// Test the 'small' case.
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for (int i = 0; i < 3; i++)
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s1.insert(i);
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std::vector<int> V(s1.begin(), s1.end());
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// Make sure the elements are in the expected order.
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std::sort(V.begin(), V.end());
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for (int i = 0; i < 3; i++)
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EXPECT_EQ(i, V[i]);
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// Test the 'big' case by adding a few more elements to switch to std::set
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// internally.
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for (int i = 3; i < 6; i++)
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s1.insert(i);
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V.assign(s1.begin(), s1.end());
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// Make sure the elements are in the expected order.
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std::sort(V.begin(), V.end());
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for (int i = 0; i < 6; i++)
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EXPECT_EQ(i, V[i]);
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}
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TEST(SmallSetTest, IteratorString) {
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// Test SmallSetIterator for SmallSet with a type with non-trivial
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// ctors/dtors.
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SmallSet<std::string, 2> s1;
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s1.insert("str 1");
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s1.insert("str 2");
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s1.insert("str 1");
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std::vector<std::string> V(s1.begin(), s1.end());
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std::sort(V.begin(), V.end());
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EXPECT_EQ(2u, s1.size());
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EXPECT_EQ("str 1", V[0]);
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EXPECT_EQ("str 2", V[1]);
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s1.insert("str 4");
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s1.insert("str 0");
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s1.insert("str 4");
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V.assign(s1.begin(), s1.end());
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// Make sure the elements are in the expected order.
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std::sort(V.begin(), V.end());
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EXPECT_EQ(4u, s1.size());
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EXPECT_EQ("str 0", V[0]);
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EXPECT_EQ("str 1", V[1]);
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EXPECT_EQ("str 2", V[2]);
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EXPECT_EQ("str 4", V[3]);
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}
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TEST(SmallSetTest, IteratorIncMoveCopy) {
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// Test SmallSetIterator for SmallSet with a type with non-trivial
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// ctors/dtors.
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SmallSet<std::string, 2> s1;
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s1.insert("str 1");
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s1.insert("str 2");
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auto Iter = s1.begin();
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EXPECT_EQ("str 1", *Iter);
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++Iter;
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EXPECT_EQ("str 2", *Iter);
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s1.insert("str 4");
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s1.insert("str 0");
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auto Iter2 = s1.begin();
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Iter = std::move(Iter2);
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EXPECT_EQ("str 0", *Iter);
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}
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