llvm-mirror/unittests/ADT/DenseMapTest.cpp
Jeffrey Yasskin 23ac706aab Fix DenseMap iterator constness.
This patch forbids implicit conversion of DenseMap::const_iterator to
DenseMap::iterator which was possible because DenseMapIterator inherited
(publicly) from DenseMapConstIterator. Conversion the other way around is now
allowed as one may expect.

The template DenseMapConstIterator is removed and the template parameter
IsConst which specifies whether the iterator is constant is added to
DenseMapIterator.

Actually IsConst parameter is not necessary since the constness can be
determined from KeyT but this is not relevant to the fix and can be addressed
later.

Patch by Victor Zverovich!

llvm-svn: 86636
2009-11-10 01:02:17 +00:00

180 lines
4.5 KiB
C++

//===- llvm/unittest/ADT/DenseMapMap.cpp - DenseMap unit tests --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "llvm/ADT/DenseMap.h"
using namespace llvm;
namespace {
// Test fixture
class DenseMapTest : public testing::Test {
protected:
DenseMap<uint32_t, uint32_t> uintMap;
DenseMap<uint32_t *, uint32_t *> uintPtrMap;
uint32_t dummyInt;
};
// Empty map tests
TEST_F(DenseMapTest, EmptyIntMapTest) {
// Size tests
EXPECT_EQ(0u, uintMap.size());
EXPECT_TRUE(uintMap.empty());
// Iterator tests
EXPECT_TRUE(uintMap.begin() == uintMap.end());
// Lookup tests
EXPECT_FALSE(uintMap.count(0u));
EXPECT_TRUE(uintMap.find(0u) == uintMap.end());
EXPECT_EQ(0u, uintMap.lookup(0u));
}
// Empty map tests for pointer map
TEST_F(DenseMapTest, EmptyPtrMapTest) {
// Size tests
EXPECT_EQ(0u, uintPtrMap.size());
EXPECT_TRUE(uintPtrMap.empty());
// Iterator tests
EXPECT_TRUE(uintPtrMap.begin() == uintPtrMap.end());
// Lookup tests
EXPECT_FALSE(uintPtrMap.count(&dummyInt));
EXPECT_TRUE(uintPtrMap.find(&dummyInt) == uintPtrMap.begin());
EXPECT_EQ(0, uintPtrMap.lookup(&dummyInt));
}
// Constant map tests
TEST_F(DenseMapTest, ConstEmptyMapTest) {
const DenseMap<uint32_t, uint32_t> & constUintMap = uintMap;
const DenseMap<uint32_t *, uint32_t *> & constUintPtrMap = uintPtrMap;
EXPECT_EQ(0u, constUintMap.size());
EXPECT_EQ(0u, constUintPtrMap.size());
EXPECT_TRUE(constUintMap.empty());
EXPECT_TRUE(constUintPtrMap.empty());
EXPECT_TRUE(constUintMap.begin() == constUintMap.end());
EXPECT_TRUE(constUintPtrMap.begin() == constUintPtrMap.end());
}
// A map with a single entry
TEST_F(DenseMapTest, SingleEntryMapTest) {
uintMap[0] = 1;
// Size tests
EXPECT_EQ(1u, uintMap.size());
EXPECT_FALSE(uintMap.begin() == uintMap.end());
EXPECT_FALSE(uintMap.empty());
// Iterator tests
DenseMap<uint32_t, uint32_t>::iterator it = uintMap.begin();
EXPECT_EQ(0u, it->first);
EXPECT_EQ(1u, it->second);
++it;
EXPECT_TRUE(it == uintMap.end());
// Lookup tests
EXPECT_TRUE(uintMap.count(0u));
EXPECT_TRUE(uintMap.find(0u) == uintMap.begin());
EXPECT_EQ(1u, uintMap.lookup(0u));
EXPECT_EQ(1u, uintMap[0]);
}
// Test clear() method
TEST_F(DenseMapTest, ClearTest) {
uintMap[0] = 1;
uintMap.clear();
EXPECT_EQ(0u, uintMap.size());
EXPECT_TRUE(uintMap.empty());
EXPECT_TRUE(uintMap.begin() == uintMap.end());
}
// Test erase(iterator) method
TEST_F(DenseMapTest, EraseTest) {
uintMap[0] = 1;
uintMap.erase(uintMap.begin());
EXPECT_EQ(0u, uintMap.size());
EXPECT_TRUE(uintMap.empty());
EXPECT_TRUE(uintMap.begin() == uintMap.end());
}
// Test erase(value) method
TEST_F(DenseMapTest, EraseTest2) {
uintMap[0] = 1;
uintMap.erase(0);
EXPECT_EQ(0u, uintMap.size());
EXPECT_TRUE(uintMap.empty());
EXPECT_TRUE(uintMap.begin() == uintMap.end());
}
// Test insert() method
TEST_F(DenseMapTest, InsertTest) {
uintMap.insert(std::make_pair(0u, 1u));
EXPECT_EQ(1u, uintMap.size());
EXPECT_EQ(1u, uintMap[0]);
}
// Test copy constructor method
TEST_F(DenseMapTest, CopyConstructorTest) {
uintMap[0] = 1;
DenseMap<uint32_t, uint32_t> copyMap(uintMap);
EXPECT_EQ(1u, copyMap.size());
EXPECT_EQ(1u, copyMap[0]);
}
// Test assignment operator method
TEST_F(DenseMapTest, AssignmentTest) {
uintMap[0] = 1;
DenseMap<uint32_t, uint32_t> copyMap = uintMap;
EXPECT_EQ(1u, copyMap.size());
EXPECT_EQ(1u, copyMap[0]);
}
// A more complex iteration test
TEST_F(DenseMapTest, IterationTest) {
bool visited[100];
// Insert 100 numbers into the map
for (int i = 0; i < 100; ++i) {
visited[i] = false;
uintMap[i] = 3;
}
// Iterate over all numbers and mark each one found.
for (DenseMap<uint32_t, uint32_t>::iterator it = uintMap.begin();
it != uintMap.end(); ++it) {
visited[it->first] = true;
}
// Ensure every number was visited.
for (int i = 0; i < 100; ++i) {
ASSERT_TRUE(visited[i]) << "Entry #" << i << " was never visited";
}
}
// const_iterator test
TEST_F(DenseMapTest, ConstIteratorTest) {
// Check conversion from iterator to const_iterator.
DenseMap<uint32_t, uint32_t>::iterator it = uintMap.begin();
DenseMap<uint32_t, uint32_t>::const_iterator cit(it);
EXPECT_TRUE(it == cit);
// Check copying of const_iterators.
DenseMap<uint32_t, uint32_t>::const_iterator cit2(cit);
EXPECT_TRUE(cit == cit2);
}
}