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// Copyright 2021 The Abseil Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/strings/internal/cord_rep_crc.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/config.h"
#include "absl/strings/internal/cord_internal.h"
#include "absl/strings/internal/cord_rep_test_util.h"
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace cord_internal {
namespace {
using ::absl::cordrep_testing::MakeFlat;
using ::testing::Eq;
using ::testing::IsNull;
using ::testing::Ne;
#if !defined(NDEBUG) && GTEST_HAS_DEATH_TEST
TEST(CordRepCrc, RemoveCrcWithNullptr) {
EXPECT_DEATH(RemoveCrcNode(nullptr), "");
}
#endif // !NDEBUG && GTEST_HAS_DEATH_TEST
TEST(CordRepCrc, NewDestroy) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
CordRepCrc* crc = CordRepCrc::New(rep, 12345);
EXPECT_TRUE(crc->refcount.IsOne());
EXPECT_THAT(crc->child, Eq(rep));
EXPECT_THAT(crc->crc, Eq(12345u));
EXPECT_TRUE(rep->refcount.IsOne());
CordRepCrc::Destroy(crc);
}
TEST(CordRepCrc, NewExistingCrcNotShared) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
CordRepCrc* crc = CordRepCrc::New(rep, 12345);
CordRepCrc* new_crc = CordRepCrc::New(crc, 54321);
EXPECT_THAT(new_crc, Eq(crc));
EXPECT_TRUE(new_crc->refcount.IsOne());
EXPECT_THAT(new_crc->child, Eq(rep));
EXPECT_THAT(new_crc->crc, Eq(54321u));
EXPECT_TRUE(rep->refcount.IsOne());
CordRepCrc::Destroy(new_crc);
}
TEST(CordRepCrc, NewExistingCrcShared) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
CordRepCrc* crc = CordRepCrc::New(rep, 12345);
CordRep::Ref(crc);
CordRepCrc* new_crc = CordRepCrc::New(crc, 54321);
EXPECT_THAT(new_crc, Ne(crc));
EXPECT_TRUE(new_crc->refcount.IsOne());
EXPECT_TRUE(crc->refcount.IsOne());
EXPECT_FALSE(rep->refcount.IsOne());
EXPECT_THAT(crc->child, Eq(rep));
EXPECT_THAT(new_crc->child, Eq(rep));
EXPECT_THAT(crc->crc, Eq(12345u));
EXPECT_THAT(new_crc->crc, Eq(54321u));
CordRep::Unref(crc);
CordRep::Unref(new_crc);
}
TEST(CordRepCrc, NewEmpty) {
CordRepCrc* crc = CordRepCrc::New(nullptr, 12345);
EXPECT_TRUE(crc->refcount.IsOne());
EXPECT_THAT(crc->child, IsNull());
EXPECT_THAT(crc->length, Eq(0u));
EXPECT_THAT(crc->crc, Eq(12345u));
EXPECT_TRUE(crc->refcount.IsOne());
CordRepCrc::Destroy(crc);
}
TEST(CordRepCrc, RemoveCrcNotCrc) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
CordRep* nocrc = RemoveCrcNode(rep);
EXPECT_THAT(nocrc, Eq(rep));
CordRep::Unref(nocrc);
}
TEST(CordRepCrc, RemoveCrcNotShared) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
CordRepCrc* crc = CordRepCrc::New(rep, 12345);
CordRep* nocrc = RemoveCrcNode(crc);
EXPECT_THAT(nocrc, Eq(rep));
EXPECT_TRUE(rep->refcount.IsOne());
CordRep::Unref(nocrc);
}
TEST(CordRepCrc, RemoveCrcShared) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
CordRepCrc* crc = CordRepCrc::New(rep, 12345);
CordRep::Ref(crc);
CordRep* nocrc = RemoveCrcNode(crc);
EXPECT_THAT(nocrc, Eq(rep));
EXPECT_FALSE(rep->refcount.IsOne());
CordRep::Unref(nocrc);
CordRep::Unref(crc);
}
} // namespace
} // namespace cord_internal
ABSL_NAMESPACE_END
} // namespace absl
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