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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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
*
* http://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 "types.h"
#include <gtest/gtest.h>
#include <memory>
#include <utility>
#include "fdevent/fdevent_test.h"
static IOVector::block_type create_block(const std::string& string) {
return IOVector::block_type(string.begin(), string.end());
}
static IOVector::block_type create_block(char value, size_t len) {
auto block = IOVector::block_type();
block.resize(len);
memset(&(block)[0], value, len);
return block;
}
template <typename T>
static IOVector::block_type copy_block(const T& block) {
auto copy = IOVector::block_type();
copy.assign(block.begin(), block.end());
return copy;
}
TEST(IOVector, empty) {
// Empty IOVector.
IOVector bc;
CHECK_EQ(0ULL, bc.coalesce().size());
}
TEST(IOVector, single_block) {
// A single block.
auto block = create_block('x', 100);
IOVector bc;
bc.append(copy_block(block));
ASSERT_EQ(100ULL, bc.size());
auto coalesced = bc.coalesce();
ASSERT_EQ(block, coalesced);
}
TEST(IOVector, single_block_split) {
// One block split.
IOVector bc;
bc.append(create_block("foobar"));
IOVector foo = bc.take_front(3);
ASSERT_EQ(3ULL, foo.size());
ASSERT_EQ(3ULL, bc.size());
ASSERT_EQ(create_block("foo"), foo.coalesce());
ASSERT_EQ(create_block("bar"), bc.coalesce());
}
TEST(IOVector, aligned_split) {
IOVector bc;
bc.append(create_block("foo"));
bc.append(create_block("bar"));
bc.append(create_block("baz"));
ASSERT_EQ(9ULL, bc.size());
IOVector foo = bc.take_front(3);
ASSERT_EQ(3ULL, foo.size());
ASSERT_EQ(create_block("foo"), foo.coalesce());
IOVector bar = bc.take_front(3);
ASSERT_EQ(3ULL, bar.size());
ASSERT_EQ(create_block("bar"), bar.coalesce());
IOVector baz = bc.take_front(3);
ASSERT_EQ(3ULL, baz.size());
ASSERT_EQ(create_block("baz"), baz.coalesce());
ASSERT_EQ(0ULL, bc.size());
}
TEST(IOVector, misaligned_split) {
IOVector bc;
bc.append(create_block("foo"));
bc.append(create_block("bar"));
bc.append(create_block("baz"));
bc.append(create_block("qux"));
bc.append(create_block("quux"));
// Aligned left, misaligned right, across multiple blocks.
IOVector foob = bc.take_front(4);
ASSERT_EQ(4ULL, foob.size());
ASSERT_EQ(create_block("foob"), foob.coalesce());
// Misaligned left, misaligned right, in one block.
IOVector a = bc.take_front(1);
ASSERT_EQ(1ULL, a.size());
ASSERT_EQ(create_block("a"), a.coalesce());
// Misaligned left, misaligned right, across two blocks.
IOVector rba = bc.take_front(3);
ASSERT_EQ(3ULL, rba.size());
ASSERT_EQ(create_block("rba"), rba.coalesce());
// Misaligned left, misaligned right, across three blocks.
IOVector zquxquu = bc.take_front(7);
ASSERT_EQ(7ULL, zquxquu.size());
ASSERT_EQ(create_block("zquxquu"), zquxquu.coalesce());
ASSERT_EQ(1ULL, bc.size());
ASSERT_EQ(create_block("x"), bc.coalesce());
}
TEST(IOVector, drop_front) {
IOVector vec;
vec.append(create_block('x', 2));
vec.append(create_block('y', 1000));
ASSERT_EQ(2U, vec.front_size());
ASSERT_EQ(1002U, vec.size());
vec.drop_front(1);
ASSERT_EQ(1U, vec.front_size());
ASSERT_EQ(1001U, vec.size());
vec.drop_front(1);
ASSERT_EQ(1000U, vec.front_size());
ASSERT_EQ(1000U, vec.size());
}
TEST(IOVector, take_front) {
IOVector vec;
ASSERT_TRUE(vec.take_front(0).empty());
vec.append(create_block('x', 2));
ASSERT_EQ(2ULL, vec.size());
ASSERT_EQ(1ULL, vec.take_front(1).size());
ASSERT_EQ(1ULL, vec.size());
ASSERT_EQ(1ULL, vec.take_front(1).size());
ASSERT_EQ(0ULL, vec.size());
}
TEST(IOVector, trim_front) {
IOVector vec;
vec.append(create_block('x', 2));
ASSERT_EQ(1ULL, vec.take_front(1).size());
ASSERT_EQ(1ULL, vec.size());
vec.trim_front();
ASSERT_EQ(1ULL, vec.size());
}
class weak_ptr_test : public FdeventTest {};
struct Destructor : public enable_weak_from_this<Destructor> {
Destructor(bool* destroyed) : destroyed_(destroyed) {}
~Destructor() { *destroyed_ = true; }
bool* destroyed_;
};
TEST_F(weak_ptr_test, smoke) {
PrepareThread();
Destructor* destructor = nullptr;
bool destroyed = false;
std::optional<weak_ptr<Destructor>> p;
fdevent_run_on_main_thread([&p, &destructor, &destroyed]() {
destructor = new Destructor(&destroyed);
p = destructor->weak();
ASSERT_TRUE(p->get());
p->reset();
ASSERT_FALSE(p->get());
p->reset(destructor);
ASSERT_TRUE(p->get());
});
WaitForFdeventLoop();
ASSERT_TRUE(destructor);
ASSERT_FALSE(destroyed);
destructor->schedule_deletion();
WaitForFdeventLoop();
ASSERT_TRUE(destroyed);
fdevent_run_on_main_thread([&p]() {
ASSERT_FALSE(p->get());
p.reset();
});
TerminateThread();
}
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