1 files changed, 169 insertions, 0 deletions
diff --git a/unittests/Target/ModuleCacheTest.cpp b/unittests/Target/ModuleCacheTest.cpp
new file mode 100644
index 000000000000..09b3edc4148b
--- /dev/null
+++ b/unittests/Target/ModuleCacheTest.cpp
@@ -0,0 +1,169 @@
+#include "gtest/gtest.h"
+
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Path.h"
+
+#include "Plugins/ObjectFile/ELF/ObjectFileELF.h"
+#include "lldb/Core/Module.h"
+#include "lldb/Core/ModuleSpec.h"
+#include "lldb/Host/HostInfo.h"
+#include "lldb/Symbol/SymbolContext.h"
+#include "lldb/Target/ModuleCache.h"
+
+extern const char *TestMainArgv0;
+
+using namespace lldb_private;
+using namespace lldb;
+
+namespace {
+
+class ModuleCacheTest : public testing::Test {
+public:
+  static void SetUpTestCase();
+
+  static void TearDownTestCase();
+
+protected:
+  static FileSpec s_cache_dir;
+  static llvm::SmallString<128> s_test_executable;
+
+  void TryGetAndPut(const FileSpec &cache_dir, const char *hostname,
+                    bool expect_download);
+};
+}
+
+FileSpec ModuleCacheTest::s_cache_dir;
+llvm::SmallString<128> ModuleCacheTest::s_test_executable;
+
+static const char dummy_hostname[] = "dummy_hostname";
+static const char dummy_remote_dir[] = "bin";
+static const char module_name[] = "TestModule.so";
+static const char module_uuid[] =
+    "F4E7E991-9B61-6AD4-0073-561AC3D9FA10-C043A476";
+static const uint32_t uuid_bytes = 20;
+static const size_t module_size = 5602;
+
+static FileSpec GetDummyRemotePath() {
+  FileSpec fs("/", false, FileSpec::ePathSyntaxPosix);
+  fs.AppendPathComponent(dummy_remote_dir);
+  fs.AppendPathComponent(module_name);
+  return fs;
+}
+
+static FileSpec GetUuidView(FileSpec spec) {
+  spec.AppendPathComponent(".cache");
+  spec.AppendPathComponent(module_uuid);
+  spec.AppendPathComponent(module_name);
+  return spec;
+}
+
+static FileSpec GetSysrootView(FileSpec spec, const char *hostname) {
+  spec.AppendPathComponent(hostname);
+  spec.AppendPathComponent(dummy_remote_dir);
+  spec.AppendPathComponent(module_name);
+  return spec;
+}
+
+void ModuleCacheTest::SetUpTestCase() {
+  HostInfo::Initialize();
+  ObjectFileELF::Initialize();
+
+  FileSpec tmpdir_spec;
+  HostInfo::GetLLDBPath(lldb::ePathTypeLLDBTempSystemDir, s_cache_dir);
+
+  llvm::StringRef exe_folder = llvm::sys::path::parent_path(TestMainArgv0);
+  s_test_executable = exe_folder;
+  llvm::sys::path::append(s_test_executable, "Inputs", module_name);
+}
+
+void ModuleCacheTest::TearDownTestCase() {
+  ObjectFileELF::Terminate();
+  HostInfo::Terminate();
+}
+
+static void VerifyDiskState(const FileSpec &cache_dir, const char *hostname) {
+  FileSpec uuid_view = GetUuidView(cache_dir);
+  EXPECT_TRUE(uuid_view.Exists()) << "uuid_view is: " << uuid_view.GetCString();
+  EXPECT_EQ(module_size, uuid_view.GetByteSize());
+
+  FileSpec sysroot_view = GetSysrootView(cache_dir, hostname);
+  EXPECT_TRUE(sysroot_view.Exists()) << "sysroot_view is: "
+                                     << sysroot_view.GetCString();
+  EXPECT_EQ(module_size, sysroot_view.GetByteSize());
+}
+
+void ModuleCacheTest::TryGetAndPut(const FileSpec &cache_dir,
+                                   const char *hostname, bool expect_download) {
+  ModuleCache mc;
+  ModuleSpec module_spec;
+  module_spec.GetFileSpec() = GetDummyRemotePath();
+  module_spec.GetUUID().SetFromCString(module_uuid, uuid_bytes);
+  module_spec.SetObjectSize(module_size);
+  ModuleSP module_sp;
+  bool did_create;
+  bool download_called = false;
+
+  Error error = mc.GetAndPut(
+      cache_dir, hostname, module_spec,
+      [this, &download_called](const ModuleSpec &module_spec,
+                               const FileSpec &tmp_download_file_spec) {
+        download_called = true;
+        EXPECT_STREQ(GetDummyRemotePath().GetCString(),
+                     module_spec.GetFileSpec().GetCString());
+        std::error_code ec = llvm::sys::fs::copy_file(
+            s_test_executable, tmp_download_file_spec.GetCString());
+        EXPECT_FALSE(ec);
+        return Error();
+      },
+      [](const ModuleSP &module_sp, const FileSpec &tmp_download_file_spec) {
+        return Error("Not supported.");
+      },
+      module_sp, &did_create);
+  EXPECT_EQ(expect_download, download_called);
+
+  EXPECT_TRUE(error.Success()) << "Error was: " << error.AsCString();
+  EXPECT_TRUE(did_create);
+  ASSERT_TRUE(bool(module_sp));
+
+  SymbolContextList sc_list;
+  EXPECT_EQ(1u, module_sp->FindFunctionSymbols(ConstString("boom"),
+                                               eFunctionNameTypeFull, sc_list));
+  EXPECT_STREQ(GetDummyRemotePath().GetCString(),
+               module_sp->GetPlatformFileSpec().GetCString());
+  EXPECT_STREQ(module_uuid, module_sp->GetUUID().GetAsString().c_str());
+}
+
+TEST_F(ModuleCacheTest, GetAndPut) {
+  FileSpec test_cache_dir = s_cache_dir;
+  test_cache_dir.AppendPathComponent("GetAndPut");
+
+  const bool expect_download = true;
+  TryGetAndPut(test_cache_dir, dummy_hostname, expect_download);
+  VerifyDiskState(test_cache_dir, dummy_hostname);
+}
+
+TEST_F(ModuleCacheTest, GetAndPutUuidExists) {
+  FileSpec test_cache_dir = s_cache_dir;
+  test_cache_dir.AppendPathComponent("GetAndPutUuidExists");
+
+  FileSpec uuid_view = GetUuidView(test_cache_dir);
+  std::error_code ec =
+      llvm::sys::fs::create_directories(uuid_view.GetDirectory().GetCString());
+  ASSERT_FALSE(ec);
+  ec = llvm::sys::fs::copy_file(s_test_executable, uuid_view.GetCString());
+  ASSERT_FALSE(ec);
+
+  const bool expect_download = false;
+  TryGetAndPut(test_cache_dir, dummy_hostname, expect_download);
+  VerifyDiskState(test_cache_dir, dummy_hostname);
+}
+
+TEST_F(ModuleCacheTest, GetAndPutStrangeHostname) {
+  FileSpec test_cache_dir = s_cache_dir;
+  test_cache_dir.AppendPathComponent("GetAndPutStrangeHostname");
+
+  const bool expect_download = true;
+  TryGetAndPut(test_cache_dir, "tab\tcolon:asterisk*", expect_download);
+  VerifyDiskState(test_cache_dir, "tab_colon_asterisk_");
+}