InMemoryModuleCacheTest.cpp
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//===- InMemoryModuleCacheTest.cpp - InMemoryModuleCache tests ------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "clang/Serialization/InMemoryModuleCache.h"
#include "llvm/Support/MemoryBuffer.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace clang;
namespace {
std::unique_ptr<MemoryBuffer> getBuffer(int I) {
SmallVector<char, 8> Bytes;
raw_svector_ostream(Bytes) << "data:" << I;
return MemoryBuffer::getMemBuffer(StringRef(Bytes.data(), Bytes.size()), "",
/* RequiresNullTerminator = */ false);
}
TEST(InMemoryModuleCacheTest, initialState) {
InMemoryModuleCache Cache;
EXPECT_EQ(InMemoryModuleCache::Unknown, Cache.getPCMState("B"));
EXPECT_FALSE(Cache.isPCMFinal("B"));
EXPECT_FALSE(Cache.shouldBuildPCM("B"));
#if !defined(NDEBUG) && GTEST_HAS_DEATH_TEST
EXPECT_DEATH(Cache.tryToDropPCM("B"), "PCM to remove is unknown");
EXPECT_DEATH(Cache.finalizePCM("B"), "PCM to finalize is unknown");
#endif
}
TEST(InMemoryModuleCacheTest, addPCM) {
auto B = getBuffer(1);
auto *RawB = B.get();
InMemoryModuleCache Cache;
EXPECT_EQ(RawB, &Cache.addPCM("B", std::move(B)));
EXPECT_EQ(InMemoryModuleCache::Tentative, Cache.getPCMState("B"));
EXPECT_EQ(RawB, Cache.lookupPCM("B"));
EXPECT_FALSE(Cache.isPCMFinal("B"));
EXPECT_FALSE(Cache.shouldBuildPCM("B"));
#if !defined(NDEBUG) && GTEST_HAS_DEATH_TEST
EXPECT_DEATH(Cache.addPCM("B", getBuffer(2)), "Already has a PCM");
EXPECT_DEATH(Cache.addBuiltPCM("B", getBuffer(2)),
"Trying to override tentative PCM");
#endif
}
TEST(InMemoryModuleCacheTest, addBuiltPCM) {
auto B = getBuffer(1);
auto *RawB = B.get();
InMemoryModuleCache Cache;
EXPECT_EQ(RawB, &Cache.addBuiltPCM("B", std::move(B)));
EXPECT_EQ(InMemoryModuleCache::Final, Cache.getPCMState("B"));
EXPECT_EQ(RawB, Cache.lookupPCM("B"));
EXPECT_TRUE(Cache.isPCMFinal("B"));
EXPECT_FALSE(Cache.shouldBuildPCM("B"));
#if !defined(NDEBUG) && GTEST_HAS_DEATH_TEST
EXPECT_DEATH(Cache.addPCM("B", getBuffer(2)), "Already has a PCM");
EXPECT_DEATH(Cache.addBuiltPCM("B", getBuffer(2)),
"Trying to override finalized PCM");
#endif
}
TEST(InMemoryModuleCacheTest, tryToDropPCM) {
auto B1 = getBuffer(1);
auto B2 = getBuffer(2);
auto *RawB1 = B1.get();
auto *RawB2 = B2.get();
ASSERT_NE(RawB1, RawB2);
InMemoryModuleCache Cache;
EXPECT_EQ(InMemoryModuleCache::Unknown, Cache.getPCMState("B"));
EXPECT_EQ(RawB1, &Cache.addPCM("B", std::move(B1)));
EXPECT_FALSE(Cache.tryToDropPCM("B"));
EXPECT_EQ(nullptr, Cache.lookupPCM("B"));
EXPECT_EQ(InMemoryModuleCache::ToBuild, Cache.getPCMState("B"));
EXPECT_FALSE(Cache.isPCMFinal("B"));
EXPECT_TRUE(Cache.shouldBuildPCM("B"));
#if !defined(NDEBUG) && GTEST_HAS_DEATH_TEST
EXPECT_DEATH(Cache.addPCM("B", getBuffer(2)), "Already has a PCM");
EXPECT_DEATH(Cache.tryToDropPCM("B"),
"PCM to remove is scheduled to be built");
EXPECT_DEATH(Cache.finalizePCM("B"), "Trying to finalize a dropped PCM");
#endif
// Add a new one.
EXPECT_EQ(RawB2, &Cache.addBuiltPCM("B", std::move(B2)));
EXPECT_TRUE(Cache.isPCMFinal("B"));
// Can try to drop again, but this should error and do nothing.
EXPECT_TRUE(Cache.tryToDropPCM("B"));
EXPECT_EQ(RawB2, Cache.lookupPCM("B"));
}
TEST(InMemoryModuleCacheTest, finalizePCM) {
auto B = getBuffer(1);
auto *RawB = B.get();
InMemoryModuleCache Cache;
EXPECT_EQ(InMemoryModuleCache::Unknown, Cache.getPCMState("B"));
EXPECT_EQ(RawB, &Cache.addPCM("B", std::move(B)));
// Call finalize.
Cache.finalizePCM("B");
EXPECT_EQ(InMemoryModuleCache::Final, Cache.getPCMState("B"));
EXPECT_TRUE(Cache.isPCMFinal("B"));
}
} // namespace