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//===-- DumpValueObjectOptionsTests.cpp -----------------------------------===//
//
// 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 "Plugins/Platform/Linux/PlatformLinux.h"
#include "Plugins/ScriptInterpreter/None/ScriptInterpreterNone.h"
#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
#include "TestingSupport/SubsystemRAII.h"
#include "TestingSupport/Symbol/ClangTestUtils.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/ValueObject.h"
#include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/DataFormatters/DumpValueObjectOptions.h"
#include "gtest/gtest.h"
#include <type_traits>
using namespace lldb;
using namespace lldb_private;
struct MockProcess : Process {
MockProcess(lldb::TargetSP target_sp, lldb::ListenerSP listener_sp)
: Process(target_sp, listener_sp) {}
llvm::StringRef GetPluginName() override { return "mock process"; }
bool CanDebug(lldb::TargetSP target, bool plugin_specified_by_name) override {
return false;
};
Status DoDestroy() override { return {}; }
void RefreshStateAfterStop() override {}
bool DoUpdateThreadList(ThreadList &old_thread_list,
ThreadList &new_thread_list) override {
return false;
};
size_t DoReadMemory(lldb::addr_t vm_addr, void *buf, size_t size,
Status &error) override {
// No need to read memory in these tests.
return size;
}
};
class ValueObjectMockProcessTest : public ::testing::Test {
public:
void SetUp() override {
ArchSpec arch("i386-pc-linux");
Platform::SetHostPlatform(
platform_linux::PlatformLinux::CreateInstance(true, &arch));
m_debugger_sp = Debugger::CreateInstance();
ASSERT_TRUE(m_debugger_sp);
m_debugger_sp->GetTargetList().CreateTarget(*m_debugger_sp, "", arch,
eLoadDependentsNo,
m_platform_sp, m_target_sp);
ASSERT_TRUE(m_target_sp);
ASSERT_TRUE(m_target_sp->GetArchitecture().IsValid());
ASSERT_TRUE(m_platform_sp);
m_listener_sp = Listener::MakeListener("dummy");
m_process_sp = std::make_shared<MockProcess>(m_target_sp, m_listener_sp);
ASSERT_TRUE(m_process_sp);
m_exe_ctx = ExecutionContext(m_process_sp);
m_holder = std::make_unique<clang_utils::TypeSystemClangHolder>("test");
m_type_system = m_holder->GetAST();
}
template <typename UnderlyingType>
void TestDumpEnum(
const std::vector<std::pair<const char *, UnderlyingType>> enumerators,
const std::vector<std::tuple<UnderlyingType, DumpValueObjectOptions,
const char *>> &tests) {
CompilerType enum_type = MakeEnumType(enumerators);
StreamString strm;
ConstString var_name("test_var");
ByteOrder endian = endian::InlHostByteOrder();
ExecutionContextScope *exe_scope = m_exe_ctx.GetBestExecutionContextScope();
for (auto [value, options, expected] : tests) {
DataExtractor data_extractor{&value, sizeof(value), endian, 4};
auto valobj_sp = ValueObjectConstResult::Create(exe_scope, enum_type,
var_name, data_extractor);
if (llvm::Error error = valobj_sp->Dump(strm, options))
llvm::consumeError(std::move(error));
ASSERT_STREQ(strm.GetString().str().c_str(), expected);
strm.Clear();
}
}
template <typename UnderlyingType>
CompilerType MakeEnumType(
const std::vector<std::pair<const char *, UnderlyingType>> enumerators) {
CompilerType int_type = m_type_system->GetBuiltinTypeForEncodingAndBitSize(
std::is_same<UnderlyingType, int>::value ? lldb::eEncodingSint
: lldb::eEncodingUint,
32);
CompilerType enum_type = m_type_system->CreateEnumerationType(
"TestEnum", m_type_system->GetTranslationUnitDecl(),
OptionalClangModuleID(), Declaration(), int_type, false);
m_type_system->StartTagDeclarationDefinition(enum_type);
Declaration decl;
for (auto [name, value] : enumerators)
m_type_system->AddEnumerationValueToEnumerationType(enum_type, decl, name,
value, 32);
m_type_system->CompleteTagDeclarationDefinition(enum_type);
return enum_type;
}
ExecutionContext m_exe_ctx;
TypeSystemClang *m_type_system;
private:
SubsystemRAII<FileSystem, HostInfo, platform_linux::PlatformLinux,
ScriptInterpreterNone>
m_subsystems;
std::unique_ptr<clang_utils::TypeSystemClangHolder> m_holder;
lldb::DebuggerSP m_debugger_sp;
lldb::TargetSP m_target_sp;
lldb::PlatformSP m_platform_sp;
lldb::ListenerSP m_listener_sp;
lldb::ProcessSP m_process_sp;
};
TEST_F(ValueObjectMockProcessTest, EmptyEnum) {
// All values of an empty enum should be shown as plain numbers.
TestDumpEnum<unsigned>({}, {{0, {}, "(TestEnum) test_var = 0\n"},
{1, {}, "(TestEnum) test_var = 1\n"},
{2, {}, "(TestEnum) test_var = 2\n"}});
TestDumpEnum<int>({}, {{-2, {}, "(TestEnum) test_var = -2\n"},
{-1, {}, "(TestEnum) test_var = -1\n"},
{0, {}, "(TestEnum) test_var = 0\n"},
{1, {}, "(TestEnum) test_var = 1\n"},
{2, {}, "(TestEnum) test_var = 2\n"}});
}
TEST_F(ValueObjectMockProcessTest, Enum) {
// This is not a bitfield-like enum, so values are printed as decimal by
// default. Also we only show the enumerator name if the value is an
// exact match.
TestDumpEnum<unsigned>(
{{"test_2", 2}, {"test_3", 3}},
{{0, {}, "(TestEnum) test_var = 0\n"},
{1, {}, "(TestEnum) test_var = 1\n"},
{2, {}, "(TestEnum) test_var = test_2\n"},
{3, {}, "(TestEnum) test_var = test_3\n"},
{4, {}, "(TestEnum) test_var = 4\n"},
{5, {}, "(TestEnum) test_var = 5\n"},
{1, DumpValueObjectOptions().SetHideRootName(true), "(TestEnum) 1\n"},
{1, DumpValueObjectOptions().SetHideRootType(true), "test_var = 1\n"},
{1, DumpValueObjectOptions().SetHideRootName(true).SetHideRootType(true),
"1\n"},
{1, DumpValueObjectOptions().SetHideName(true), "(TestEnum) 1\n"},
{1, DumpValueObjectOptions().SetHideValue(true),
"(TestEnum) test_var =\n"},
{1, DumpValueObjectOptions().SetHideName(true).SetHideValue(true),
"(TestEnum) \n"}});
}
TEST_F(ValueObjectMockProcessTest, BitFieldLikeEnum) {
// These enumerators set individual bits in the value, as if it were a flag
// set. lldb treats this as a "bitfield like enum". This means we show values
// as hex, and values without exact matches are shown as a combination of
// enumerators and any remaining value left over.
TestDumpEnum<unsigned>(
{{"test_2", 2}, {"test_4", 4}},
{
{0, {}, "(TestEnum) test_var = 0x0\n"},
{1, {}, "(TestEnum) test_var = 0x1\n"},
{2, {}, "(TestEnum) test_var = test_2\n"},
{4, {}, "(TestEnum) test_var = test_4\n"},
{6, {}, "(TestEnum) test_var = test_2 | test_4\n"},
{7, {}, "(TestEnum) test_var = test_2 | test_4 | 0x1\n"},
{8, {}, "(TestEnum) test_var = 0x8\n"},
{1, DumpValueObjectOptions().SetHideRootName(true),
"(TestEnum) 0x1\n"},
{1, DumpValueObjectOptions().SetHideRootType(true),
"test_var = 0x1\n"},
{1,
DumpValueObjectOptions().SetHideRootName(true).SetHideRootType(true),
"0x1\n"},
{1, DumpValueObjectOptions().SetHideName(true), "(TestEnum) 0x1\n"},
{1, DumpValueObjectOptions().SetHideValue(true),
"(TestEnum) test_var =\n"},
{1, DumpValueObjectOptions().SetHideName(true).SetHideValue(true),
"(TestEnum) \n"},
});
}
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