add a unittest

Author: Nerixyz

lldb/unittests/Core/CMakeLists.txt

@@ -15,6 +15,7 @@ add_lldb_unittest(LLDBCoreTests
   SourceManagerTest.cpp
   TelemetryTest.cpp
   UniqueCStringMapTest.cpp
+  Value.cpp
 
   LINK_COMPONENTS
     Support

lldb/unittests/Core/Value.cpp

@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// 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 "lldb/Core/Value.h"
+#include "Plugins/Platform/MacOSX/PlatformMacOSX.h"
+#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
+#include "TestingSupport/SubsystemRAII.h"
+#include "TestingSupport/Symbol/ClangTestUtils.h"
+
+#include "lldb/Utility/DataExtractor.h"
+
+#include "gtest/gtest.h"
+
+using namespace lldb_private;
+using namespace lldb_private::clang_utils;
+
+TEST(ValueTest, GetValueAsData) {
+  SubsystemRAII<FileSystem, HostInfo, PlatformMacOSX> subsystems;
+  auto holder = std::make_unique<clang_utils::TypeSystemClangHolder>("test");
+  auto *clang = holder->GetAST();
+
+  Value v(Scalar(42));
+  DataExtractor extractor;
+
+  // no compiler type
+  Status status = v.GetValueAsData(nullptr, extractor, nullptr);
+  ASSERT_TRUE(status.Fail());
+
+  // with compiler type
+  v.SetCompilerType(clang->GetBasicType(lldb::BasicType::eBasicTypeChar));
+
+  status = v.GetValueAsData(nullptr, extractor, nullptr);
+  ASSERT_TRUE(status.Success());
+}