1 //===-- GDBRemoteCommunicationTest.cpp ------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 #include "GDBRemoteTestUtils.h"
9 #include "llvm/Testing/Support/Error.h"
10
11 using namespace lldb_private::process_gdb_remote;
12 using namespace lldb_private;
13 using namespace lldb;
14 typedef GDBRemoteCommunication::PacketResult PacketResult;
15
16 namespace {
17
18 class TestClient : public GDBRemoteCommunication {
19 public:
TestClient()20 TestClient()
21 : GDBRemoteCommunication("test.client", "test.client.listener") {}
22
ReadPacket(StringExtractorGDBRemote & response)23 PacketResult ReadPacket(StringExtractorGDBRemote &response) {
24 return GDBRemoteCommunication::ReadPacket(response, std::chrono::seconds(1),
25 /*sync_on_timeout*/ false);
26 }
27 };
28
29 class GDBRemoteCommunicationTest : public GDBRemoteTest {
30 public:
SetUp()31 void SetUp() override {
32 ASSERT_THAT_ERROR(GDBRemoteCommunication::ConnectLocally(client, server),
33 llvm::Succeeded());
34 }
35
36 protected:
37 TestClient client;
38 MockServer server;
39
Write(llvm::StringRef packet)40 bool Write(llvm::StringRef packet) {
41 ConnectionStatus status;
42 return server.Write(packet.data(), packet.size(), status, nullptr) ==
43 packet.size();
44 }
45 };
46 } // end anonymous namespace
47
48 // Test that we can decode packets correctly. In particular, verify that
49 // checksum calculation works.
TEST_F(GDBRemoteCommunicationTest,ReadPacket)50 TEST_F(GDBRemoteCommunicationTest, ReadPacket) {
51 struct TestCase {
52 llvm::StringLiteral Packet;
53 llvm::StringLiteral Payload;
54 };
55 static constexpr TestCase Tests[] = {
56 {{"$#00"}, {""}},
57 {{"$foobar#79"}, {"foobar"}},
58 {{"$}]#da"}, {"}"}}, // Escaped }
59 {{"$x*%#c7"}, {"xxxxxxxxx"}}, // RLE
60 {{"+$#00"}, {""}}, // Spurious ACK
61 {{"-$#00"}, {""}}, // Spurious NAK
62 };
63 for (const auto &Test : Tests) {
64 SCOPED_TRACE(Test.Packet + " -> " + Test.Payload);
65 StringExtractorGDBRemote response;
66 ASSERT_TRUE(Write(Test.Packet));
67 ASSERT_EQ(PacketResult::Success, client.ReadPacket(response));
68 ASSERT_EQ(Test.Payload, response.GetStringRef());
69 ASSERT_EQ(PacketResult::Success, server.GetAck());
70 }
71 }
72