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276 lines
6.4 KiB
C++
276 lines
6.4 KiB
C++
//===- llvm/unittest/ADT/SmallPtrSetTest.cpp ------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// SmallPtrSet unit tests.
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "llvm/ADT/SmallPtrSet.h"
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using namespace llvm;
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TEST(SmallPtrSetTest, Assignment) {
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int buf[8];
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for (int i = 0; i < 8; ++i)
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buf[i] = 0;
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SmallPtrSet<int *, 4> s1;
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s1.insert(&buf[0]);
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s1.insert(&buf[1]);
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SmallPtrSet<int *, 4> s2;
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(s2 = s1).insert(&buf[2]);
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// Self assign as well.
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(s2 = s2).insert(&buf[3]);
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s1 = s2;
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EXPECT_EQ(4U, s1.size());
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for (int i = 0; i < 8; ++i)
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if (i < 4)
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EXPECT_TRUE(s1.count(&buf[i]));
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else
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EXPECT_FALSE(s1.count(&buf[i]));
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}
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TEST(SmallPtrSetTest, GrowthTest) {
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int i;
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int buf[8];
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for(i=0; i<8; ++i) buf[i]=0;
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SmallPtrSet<int *, 4> s;
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typedef SmallPtrSet<int *, 4>::iterator iter;
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s.insert(&buf[0]);
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s.insert(&buf[1]);
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s.insert(&buf[2]);
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s.insert(&buf[3]);
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EXPECT_EQ(4U, s.size());
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i = 0;
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for(iter I=s.begin(), E=s.end(); I!=E; ++I, ++i)
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(**I)++;
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EXPECT_EQ(4, i);
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for(i=0; i<8; ++i)
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EXPECT_EQ(i<4?1:0,buf[i]);
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s.insert(&buf[4]);
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s.insert(&buf[5]);
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s.insert(&buf[6]);
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s.insert(&buf[7]);
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i = 0;
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for(iter I=s.begin(), E=s.end(); I!=E; ++I, ++i)
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(**I)++;
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EXPECT_EQ(8, i);
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s.erase(&buf[4]);
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s.erase(&buf[5]);
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s.erase(&buf[6]);
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s.erase(&buf[7]);
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EXPECT_EQ(4U, s.size());
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i = 0;
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for(iter I=s.begin(), E=s.end(); I!=E; ++I, ++i)
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(**I)++;
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EXPECT_EQ(4, i);
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for(i=0; i<8; ++i)
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EXPECT_EQ(i<4?3:1,buf[i]);
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s.clear();
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for(i=0; i<8; ++i) buf[i]=0;
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for(i=0; i<128; ++i) s.insert(&buf[i%8]); // test repeated entires
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EXPECT_EQ(8U, s.size());
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for(iter I=s.begin(), E=s.end(); I!=E; ++I, ++i)
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(**I)++;
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for(i=0; i<8; ++i)
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EXPECT_EQ(1,buf[i]);
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}
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TEST(SmallPtrSetTest, CopyAndMoveTest) {
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int buf[8];
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for (int i = 0; i < 8; ++i)
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buf[i] = 0;
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SmallPtrSet<int *, 4> s1;
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s1.insert(&buf[0]);
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s1.insert(&buf[1]);
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s1.insert(&buf[2]);
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s1.insert(&buf[3]);
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EXPECT_EQ(4U, s1.size());
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for (int i = 0; i < 8; ++i)
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if (i < 4)
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EXPECT_TRUE(s1.count(&buf[i]));
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else
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EXPECT_FALSE(s1.count(&buf[i]));
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SmallPtrSet<int *, 4> s2(s1);
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EXPECT_EQ(4U, s2.size());
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for (int i = 0; i < 8; ++i)
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if (i < 4)
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EXPECT_TRUE(s2.count(&buf[i]));
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else
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EXPECT_FALSE(s2.count(&buf[i]));
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s1 = s2;
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EXPECT_EQ(4U, s1.size());
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EXPECT_EQ(4U, s2.size());
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for (int i = 0; i < 8; ++i)
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if (i < 4)
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EXPECT_TRUE(s1.count(&buf[i]));
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else
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EXPECT_FALSE(s1.count(&buf[i]));
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SmallPtrSet<int *, 4> s3(std::move(s1));
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EXPECT_EQ(4U, s3.size());
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EXPECT_TRUE(s1.empty());
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for (int i = 0; i < 8; ++i)
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if (i < 4)
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EXPECT_TRUE(s3.count(&buf[i]));
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else
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EXPECT_FALSE(s3.count(&buf[i]));
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// Move assign into the moved-from object. Also test move of a non-small
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// container.
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s3.insert(&buf[4]);
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s3.insert(&buf[5]);
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s3.insert(&buf[6]);
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s3.insert(&buf[7]);
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s1 = std::move(s3);
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EXPECT_EQ(8U, s1.size());
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EXPECT_TRUE(s3.empty());
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for (int i = 0; i < 8; ++i)
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EXPECT_TRUE(s1.count(&buf[i]));
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// Copy assign into a moved-from object.
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s3 = s1;
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EXPECT_EQ(8U, s3.size());
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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_TRUE(s3.count(&buf[i]));
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}
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TEST(SmallPtrSetTest, SwapTest) {
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int buf[10];
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SmallPtrSet<int *, 2> a;
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SmallPtrSet<int *, 2> b;
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a.insert(&buf[0]);
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a.insert(&buf[1]);
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b.insert(&buf[2]);
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EXPECT_EQ(2U, a.size());
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EXPECT_EQ(1U, b.size());
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EXPECT_TRUE(a.count(&buf[0]));
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EXPECT_TRUE(a.count(&buf[1]));
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EXPECT_FALSE(a.count(&buf[2]));
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EXPECT_FALSE(a.count(&buf[3]));
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EXPECT_FALSE(b.count(&buf[0]));
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EXPECT_FALSE(b.count(&buf[1]));
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EXPECT_TRUE(b.count(&buf[2]));
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EXPECT_FALSE(b.count(&buf[3]));
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std::swap(a, b);
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EXPECT_EQ(1U, a.size());
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EXPECT_EQ(2U, b.size());
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EXPECT_FALSE(a.count(&buf[0]));
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EXPECT_FALSE(a.count(&buf[1]));
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EXPECT_TRUE(a.count(&buf[2]));
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EXPECT_FALSE(a.count(&buf[3]));
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EXPECT_TRUE(b.count(&buf[0]));
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EXPECT_TRUE(b.count(&buf[1]));
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EXPECT_FALSE(b.count(&buf[2]));
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EXPECT_FALSE(b.count(&buf[3]));
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b.insert(&buf[3]);
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std::swap(a, b);
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EXPECT_EQ(3U, a.size());
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EXPECT_EQ(1U, b.size());
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EXPECT_TRUE(a.count(&buf[0]));
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EXPECT_TRUE(a.count(&buf[1]));
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EXPECT_FALSE(a.count(&buf[2]));
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EXPECT_TRUE(a.count(&buf[3]));
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EXPECT_FALSE(b.count(&buf[0]));
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EXPECT_FALSE(b.count(&buf[1]));
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EXPECT_TRUE(b.count(&buf[2]));
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EXPECT_FALSE(b.count(&buf[3]));
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std::swap(a, b);
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EXPECT_EQ(1U, a.size());
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EXPECT_EQ(3U, b.size());
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EXPECT_FALSE(a.count(&buf[0]));
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EXPECT_FALSE(a.count(&buf[1]));
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EXPECT_TRUE(a.count(&buf[2]));
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EXPECT_FALSE(a.count(&buf[3]));
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EXPECT_TRUE(b.count(&buf[0]));
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EXPECT_TRUE(b.count(&buf[1]));
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EXPECT_FALSE(b.count(&buf[2]));
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EXPECT_TRUE(b.count(&buf[3]));
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a.insert(&buf[4]);
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a.insert(&buf[5]);
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a.insert(&buf[6]);
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std::swap(b, a);
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EXPECT_EQ(3U, a.size());
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EXPECT_EQ(4U, b.size());
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EXPECT_TRUE(b.count(&buf[2]));
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EXPECT_TRUE(b.count(&buf[4]));
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EXPECT_TRUE(b.count(&buf[5]));
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EXPECT_TRUE(b.count(&buf[6]));
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EXPECT_TRUE(a.count(&buf[0]));
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EXPECT_TRUE(a.count(&buf[1]));
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EXPECT_TRUE(a.count(&buf[3]));
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}
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void checkEraseAndIterators(SmallPtrSetImpl<int*> &S) {
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int buf[3];
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S.insert(&buf[0]);
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S.insert(&buf[1]);
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S.insert(&buf[2]);
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// Iterators must still be valid after erase() calls;
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auto B = S.begin();
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auto M = std::next(B);
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auto E = S.end();
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EXPECT_TRUE(*B == &buf[0] || *B == &buf[1] || *B == &buf[2]);
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EXPECT_TRUE(*M == &buf[0] || *M == &buf[1] || *M == &buf[2]);
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EXPECT_TRUE(*B != *M);
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int *Removable = *std::next(M);
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// No iterator points to Removable now.
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EXPECT_TRUE(Removable == &buf[0] || Removable == &buf[1] ||
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Removable == &buf[2]);
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EXPECT_TRUE(Removable != *B && Removable != *M);
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S.erase(Removable);
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// B,M,E iterators should still be valid
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EXPECT_EQ(B, S.begin());
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EXPECT_EQ(M, std::next(B));
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EXPECT_EQ(E, S.end());
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EXPECT_EQ(std::next(M), E);
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}
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TEST(SmallPtrSetTest, EraseTest) {
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// Test when set stays small.
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SmallPtrSet<int *, 8> B;
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checkEraseAndIterators(B);
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// Test when set grows big.
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SmallPtrSet<int *, 2> A;
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checkEraseAndIterators(A);
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}
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