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//===- llvm/unittest/ADT/StringMapMap.cpp - StringMap unit tests ----------===//
//
// 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/StringMap.h"
#include "llvm/Support/DataTypes.h"
using namespace llvm;
namespace {
// Test fixture
class StringMapTest : public testing::Test {
protected:
StringMap<uint32_t> testMap;
static const char testKey[];
static const uint32_t testValue;
static const char* testKeyFirst;
static size_t testKeyLength;
static const std::string testKeyStr;
void assertEmptyMap() {
// Size tests
EXPECT_EQ(0u, testMap.size());
EXPECT_TRUE(testMap.empty());
// Iterator tests
EXPECT_TRUE(testMap.begin() == testMap.end());
// Lookup tests
EXPECT_EQ(0u, testMap.count(testKey));
EXPECT_EQ(0u, testMap.count(StringRef(testKeyFirst, testKeyLength)));
EXPECT_EQ(0u, testMap.count(testKeyStr));
EXPECT_TRUE(testMap.find(testKey) == testMap.end());
EXPECT_TRUE(testMap.find(StringRef(testKeyFirst, testKeyLength)) ==
testMap.end());
EXPECT_TRUE(testMap.find(testKeyStr) == testMap.end());
}
void assertSingleItemMap() {
// Size tests
EXPECT_EQ(1u, testMap.size());
EXPECT_FALSE(testMap.begin() == testMap.end());
EXPECT_FALSE(testMap.empty());
// Iterator tests
StringMap<uint32_t>::iterator it = testMap.begin();
EXPECT_STREQ(testKey, it->first().data());
EXPECT_EQ(testValue, it->second);
++it;
EXPECT_TRUE(it == testMap.end());
// Lookup tests
EXPECT_EQ(1u, testMap.count(testKey));
EXPECT_EQ(1u, testMap.count(StringRef(testKeyFirst, testKeyLength)));
EXPECT_EQ(1u, testMap.count(testKeyStr));
EXPECT_TRUE(testMap.find(testKey) == testMap.begin());
EXPECT_TRUE(testMap.find(StringRef(testKeyFirst, testKeyLength)) ==
testMap.begin());
EXPECT_TRUE(testMap.find(testKeyStr) == testMap.begin());
}
};
const char StringMapTest::testKey[] = "key";
const uint32_t StringMapTest::testValue = 1u;
const char* StringMapTest::testKeyFirst = testKey;
size_t StringMapTest::testKeyLength = sizeof(testKey) - 1;
const std::string StringMapTest::testKeyStr(testKey);
// Empty map tests.
TEST_F(StringMapTest, EmptyMapTest) {
assertEmptyMap();
}
// Constant map tests.
TEST_F(StringMapTest, ConstEmptyMapTest) {
const StringMap<uint32_t>& constTestMap = testMap;
// Size tests
EXPECT_EQ(0u, constTestMap.size());
EXPECT_TRUE(constTestMap.empty());
// Iterator tests
EXPECT_TRUE(constTestMap.begin() == constTestMap.end());
// Lookup tests
EXPECT_EQ(0u, constTestMap.count(testKey));
EXPECT_EQ(0u, constTestMap.count(StringRef(testKeyFirst, testKeyLength)));
EXPECT_EQ(0u, constTestMap.count(testKeyStr));
EXPECT_TRUE(constTestMap.find(testKey) == constTestMap.end());
EXPECT_TRUE(constTestMap.find(StringRef(testKeyFirst, testKeyLength)) ==
constTestMap.end());
EXPECT_TRUE(constTestMap.find(testKeyStr) == constTestMap.end());
}
// A map with a single entry.
TEST_F(StringMapTest, SingleEntryMapTest) {
testMap[testKey] = testValue;
assertSingleItemMap();
}
// Test clear() method.
TEST_F(StringMapTest, ClearTest) {
testMap[testKey] = testValue;
testMap.clear();
assertEmptyMap();
}
// Test erase(iterator) method.
TEST_F(StringMapTest, EraseIteratorTest) {
testMap[testKey] = testValue;
testMap.erase(testMap.begin());
assertEmptyMap();
}
// Test erase(value) method.
TEST_F(StringMapTest, EraseValueTest) {
testMap[testKey] = testValue;
testMap.erase(testKey);
assertEmptyMap();
}
// Test inserting two values and erasing one.
TEST_F(StringMapTest, InsertAndEraseTest) {
testMap[testKey] = testValue;
testMap["otherKey"] = 2;
testMap.erase("otherKey");
assertSingleItemMap();
}
TEST_F(StringMapTest, SmallFullMapTest) {
// StringMap has a tricky corner case when the map is small (<8 buckets) and
// it fills up through a balanced pattern of inserts and erases. This can
// lead to inf-loops in some cases (PR13148) so we test it explicitly here.
llvm::StringMap<int> Map(2);
Map["eins"] = 1;
Map["zwei"] = 2;
Map["drei"] = 3;
Map.erase("drei");
Map.erase("eins");
Map["veir"] = 4;
Map["funf"] = 5;
EXPECT_EQ(3u, Map.size());
EXPECT_EQ(0, Map.lookup("eins"));
EXPECT_EQ(2, Map.lookup("zwei"));
EXPECT_EQ(0, Map.lookup("drei"));
EXPECT_EQ(4, Map.lookup("veir"));
EXPECT_EQ(5, Map.lookup("funf"));
}
// A more complex iteration test.
TEST_F(StringMapTest, IterationTest) {
bool visited[100];
// Insert 100 numbers into the map
for (int i = 0; i < 100; ++i) {
std::stringstream ss;
ss << "key_" << i;
testMap[ss.str()] = i;
visited[i] = false;
}
// Iterate over all numbers and mark each one found.
for (StringMap<uint32_t>::iterator it = testMap.begin();
it != testMap.end(); ++it) {
std::stringstream ss;
ss << "key_" << it->second;
ASSERT_STREQ(ss.str().c_str(), it->first().data());
visited[it->second] = true;
}
// Ensure every number was visited.
for (int i = 0; i < 100; ++i) {
ASSERT_TRUE(visited[i]) << "Entry #" << i << " was never visited";
}
}
} // end anonymous namespace
namespace llvm {
template <>
class StringMapEntryInitializer<uint32_t> {
public:
template <typename InitTy>
static void Initialize(StringMapEntry<uint32_t> &T, InitTy InitVal) {
T.second = InitVal;
}
};
} // end llvm namespace
namespace {
// Test StringMapEntry::Create() method.
TEST_F(StringMapTest, StringMapEntryTest) {
StringMap<uint32_t>::value_type* entry =
StringMap<uint32_t>::value_type::Create(
testKeyFirst, testKeyFirst + testKeyLength, 1u);
EXPECT_STREQ(testKey, entry->first().data());
EXPECT_EQ(1u, entry->second);
free(entry);
}
// Test insert() method.
TEST_F(StringMapTest, InsertTest) {
SCOPED_TRACE("InsertTest");
testMap.insert(
StringMap<uint32_t>::value_type::Create(
testKeyFirst, testKeyFirst + testKeyLength,
testMap.getAllocator(), 1u));
assertSingleItemMap();
}
} // end anonymous namespace
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