1 /*
2  * Copyright 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "l2cap/internal/sender.h"
18 
19 #include <gmock/gmock.h>
20 #include <gtest/gtest.h>
21 #include <future>
22 
23 #include "l2cap/internal/channel_impl_mock.h"
24 #include "l2cap/internal/scheduler.h"
25 #include "os/handler.h"
26 #include "os/queue.h"
27 #include "os/thread.h"
28 #include "packet/raw_builder.h"
29 
30 namespace bluetooth {
31 namespace l2cap {
32 namespace internal {
33 namespace {
34 
35 using ::testing::Return;
36 
37 std::unique_ptr<packet::BasePacketBuilder> CreateSdu(std::vector<uint8_t> payload) {
38   auto raw_builder = std::make_unique<packet::RawBuilder>();
39   raw_builder->AddOctets(payload);
40   return raw_builder;
41 }
42 
43 PacketView<kLittleEndian> GetPacketView(std::unique_ptr<packet::BasePacketBuilder> packet) {
44   auto bytes = std::make_shared<std::vector<uint8_t>>();
45   BitInserter i(*bytes);
46   bytes->reserve(packet->size());
47   packet->Serialize(i);
48   return packet::PacketView<packet::kLittleEndian>(bytes);
49 }
50 
51 class FakeScheduler : public Scheduler {
52  public:
53   void OnPacketsReady(Cid cid, int number_packets) override {
54     on_packets_ready_(cid, number_packets);
55   }
56 
57   void SetOnPacketsReady(std::function<void(Cid cid, int number_packets)> callback) {
58     on_packets_ready_ = callback;
59   }
60   std::function<void(Cid cid, int number_packets)> on_packets_ready_;
61 };
62 
63 class L2capSenderTest : public ::testing::Test {
64  public:
65   std::unique_ptr<Sender::UpperDequeue> enqueue_callback() {
66     auto packet_one = CreateSdu({'a', 'b', 'c'});
67     channel_queue_.GetUpEnd()->UnregisterEnqueue();
68     return packet_one;
69   }
70 
71  protected:
72   void SetUp() override {
73     thread_ = new os::Thread("test_thread", os::Thread::Priority::NORMAL);
74     user_handler_ = new os::Handler(thread_);
75     queue_handler_ = new os::Handler(thread_);
76     mock_channel_ = std::make_shared<testing::MockChannelImpl>();
77     EXPECT_CALL(*mock_channel_, GetQueueDownEnd()).WillRepeatedly(Return(channel_queue_.GetDownEnd()));
78     EXPECT_CALL(*mock_channel_, GetCid()).WillRepeatedly(Return(cid_));
79     EXPECT_CALL(*mock_channel_, GetRemoteCid()).WillRepeatedly(Return(cid_));
80     sender_ = new Sender(queue_handler_, nullptr, &scheduler_, mock_channel_);
81   }
82 
83   void TearDown() override {
84     queue_handler_->Clear();
85     user_handler_->Clear();
86     delete sender_;
87     delete queue_handler_;
88     delete user_handler_;
89     delete thread_;
90   }
91 
92   os::Thread* thread_ = nullptr;
93   os::Handler* user_handler_ = nullptr;
94   os::Handler* queue_handler_ = nullptr;
95   common::BidiQueue<Sender::UpperEnqueue, Sender::UpperDequeue> channel_queue_{10};
96   std::shared_ptr<testing::MockChannelImpl> mock_channel_;
97   Sender* sender_ = nullptr;
98   Cid cid_ = 0x41;
99   FakeScheduler scheduler_;
100 };
101 
102 TEST_F(L2capSenderTest, send_packet) {
103   std::promise<void> promise;
104   auto future = promise.get_future();
105   scheduler_.SetOnPacketsReady([&promise](Cid cid, int number_packets) { promise.set_value(); });
106   channel_queue_.GetUpEnd()->RegisterEnqueue(
107       queue_handler_, common::Bind(&L2capSenderTest::enqueue_callback, common::Unretained(this)));
108   auto status = future.wait_for(std::chrono::milliseconds(3));
109   EXPECT_EQ(status, std::future_status::ready);
110   auto packet = sender_->GetNextPacket();
111   EXPECT_NE(packet, nullptr);
112   auto packet_view = GetPacketView(std::move(packet));
113   auto basic_frame_view = BasicFrameView::Create(packet_view);
114   EXPECT_TRUE(basic_frame_view.IsValid());
115   EXPECT_EQ(basic_frame_view.GetChannelId(), cid_);
116   auto payload = basic_frame_view.GetPayload();
117   std::string payload_string(payload.begin(), payload.end());
118   EXPECT_EQ(payload_string, "abc");
119 }
120 
121 }  // namespace
122 }  // namespace internal
123 }  // namespace l2cap
124 }  // namespace bluetooth
125