Refactor Input/Output file to use const char* instead of standard string, and to use parent_folder and file_name for input and output files. This also incorporates the move from nearby_connections to nearby.

PiperOrigin-RevId: 415587802

cpp/platform/impl/windows/BUILD

@@ -26,11 +26,9 @@ cc_library(
         "condition_variable.h",
         "executor.h",
         "future.h",
-        "input_file.h",
         "listenable_future.h",
         "log_message.h",
         "mutex.h",
-        "output_file.h",
         "scheduled_executor.h",
         "settable_future.h",
         "submittable_executor.h",

cpp/platform/impl/windows/executor_test.cc

@@ -125,20 +125,25 @@ TEST(ExecutorTests, SingleThreadedExecutorMultipleTasksSucceeds) {
   // Container to note threads that ran
   std::unique_ptr<std::vector<DWORD>> threadIds =
       std::make_unique<std::vector<DWORD>>();
+  CRITICAL_SECTION crit_sec;
+  InitializeCriticalSection(&crit_sec);
 
   threadIds->push_back(GetCurrentThreadId());
 
   // Act
   for (int index = 0; index < 5; index++) {
-    executor->Execute([&output, &threadIds, index]() {
+    executor->Execute([&output, &threadIds, &crit_sec, index]() {
+      EnterCriticalSection(&crit_sec);
       threadIds->push_back(GetCurrentThreadId());
       char buffer[128];
       snprintf(buffer, sizeof(buffer), "%s%d, ", RUNNABLE_TEXT.c_str(), index);
       output.append(std::string(buffer));
+      LeaveCriticalSection(&crit_sec);
     });
   }
 
   executor->Shutdown();
+  DeleteCriticalSection(&crit_sec);
 
   //  Assert
   //  We should've run 1 time on the main thread, and 5 times on the
@@ -200,19 +205,25 @@ TEST(ExecutorTests, MultiThreadedExecutorMultipleTasksSucceeds) {
 
   std::shared_ptr<std::string> output = std::make_shared<std::string>();
 
+  CRITICAL_SECTION crit_sec;
+  InitializeCriticalSection(&crit_sec);
+
   threadIds->push_back(GetCurrentThreadId());
 
   //  Act
   for (int index = 0; index < 5; index++) {
-    executor->Execute([&output, &threadIds, index]() {
+    executor->Execute([&output, &threadIds, &crit_sec, index]() {
+      EnterCriticalSection(&crit_sec);
       threadIds->push_back(GetCurrentThreadId());
       char buffer[128];
       snprintf(buffer, sizeof(buffer), "%s %d, ", RUNNABLE_TEXT.c_str(), index);
       output->append(std::string(buffer));
+      LeaveCriticalSection(&crit_sec);
     });
   }
 
   executor->Shutdown();
+  DeleteCriticalSection(&crit_sec);
 
   //  Assert
   //  We should've run 1 time on the main thread, and 5 times on the

cpp/platform/impl/windows/input_file.h

@@ -1,50 +0,0 @@
-// Copyright 2020 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef PLATFORM_IMPL_WINDOWS_INPUT_FILE_H_
-#define PLATFORM_IMPL_WINDOWS_INPUT_FILE_H_
-
-#include "platform/api/input_file.h"
-#include "platform/base/byte_array.h"
-#include "platform/base/exception.h"
-
-namespace location {
-namespace nearby {
-namespace windows {
-
-// An InputFile represents a readable file on the system.
-class InputFile : public api::InputFile {
- public:
-  // TODO(b/184975123): replace with real implementation.
-  ~InputFile() override = default;
-  // TODO(b/184975123): replace with real implementation.
-  std::string GetFilePath() const override { return "Un-implemented"; }
-  // TODO(b/184975123): replace with real implementation.
-  std::int64_t GetTotalSize() const override { return 0; }
-
-  // throws Exception::kIo
-  // TODO(b/184975123): replace with real implementation.
-  ExceptionOr<ByteArray> Read(std::int64_t size) override {
-    return ExceptionOr<ByteArray>(Exception::kFailed);
-  }
-  // throws Exception::kIo
-  // TODO(b/184975123): replace with real implementation.
-  Exception Close() override { return Exception{}; }
-};
-
-}  // namespace windows
-}  // namespace nearby
-}  // namespace location
-
-#endif  // PLATFORM_IMPL_WINDOWS_INPUT_FILE_H_

cpp/platform/impl/windows/input_file_test.cc

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "platform/impl/windows/input_file.h"
-
 #include "gtest/gtest.h"
 #include "platform/base/exception.h"
 #include "platform/base/payload_id.h"
@@ -24,21 +22,18 @@ class InputFileTests : public testing::Test {
  protected:
   // You can define per-test set-up logic as usual.
   void SetUp() override {
-    location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
-
-    hFile_ = CreateFileA(
-        test_utils::GetPayloadPath(payloadId).c_str(),  // name of the write
-        GENERIC_WRITE,                                  // open for writing
-        0,                                              // do not share
-        NULL,                                           // default security
-        CREATE_ALWAYS,                                  // create new file only
-        FILE_ATTRIBUTE_NORMAL,                          // normal file
-        NULL);                                          // no attr. template
+    hFile_ = CreateFileA(TEST_FILE_PATH.c_str(),  // name of the write
+                         GENERIC_WRITE,           // open for writing
+                         0,                       // do not share
+                         NULL,                    // default security
+                         CREATE_ALWAYS,           // create new file only
+                         FILE_ATTRIBUTE_NORMAL,   // normal file
+                         NULL);                   // no attr. template
 
     if (hFile_ == INVALID_HANDLE_VALUE) {
       NEARBY_LOG(ERROR,
-                 "Failed to create OutputFile with payloadId: %s and error: %d",
-                 test_utils::GetPayloadPath(payloadId).c_str(), GetLastError());
+                 "Failed to create OutputFile with file path: %s and error: %d",
+                 TEST_FILE_PATH.c_str(), GetLastError());
     }
 
     const char* buffer = TEST_STRING;
@@ -52,9 +47,8 @@ class InputFileTests : public testing::Test {
 
   // You can define per-test tear-down logic as usual.
   void TearDown() override {
-    location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
-    if (FileExists(test_utils::GetPayloadPath(payloadId).c_str())) {
-      DeleteFileA(test_utils::GetPayloadPath(payloadId).c_str());
+    if (FileExists(TEST_FILE_PATH.c_str())) {
+      DeleteFileA(TEST_FILE_PATH.c_str());
     }
   }
 
@@ -74,7 +68,7 @@ TEST_F(InputFileTests, SuccessfulCreation) {
   std::unique_ptr<location::nearby::api::InputFile> inputFile = nullptr;
 
   inputFile = location::nearby::api::ImplementationPlatform::CreateInputFile(
-      payloadId, strlen(TEST_STRING));
+      TEST_FILE_PATH.c_str());
 
   EXPECT_NE(inputFile, nullptr);
   EXPECT_EQ(inputFile->Close(),
@@ -82,28 +76,27 @@ TEST_F(InputFileTests, SuccessfulCreation) {
 }
 
 TEST_F(InputFileTests, SuccessfulGetFilePath) {
-  location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
   std::unique_ptr<location::nearby::api::InputFile> inputFile = nullptr;
   std::string fileName;
+  std::string expected(TEST_FILE_PATH.c_str());
 
   inputFile = location::nearby::api::ImplementationPlatform::CreateInputFile(
-      payloadId, strlen(TEST_STRING));
+      TEST_FILE_PATH.c_str());
 
   fileName = inputFile->GetFilePath();
 
   EXPECT_EQ(inputFile->Close(),
             location::nearby::Exception{location::nearby::Exception::kSuccess});
 
-  EXPECT_EQ(fileName, test_utils::GetPayloadPath(payloadId).c_str());
+  EXPECT_EQ(fileName, expected);
 }
 
 TEST_F(InputFileTests, SuccessfulGetTotalSize) {
-  location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
   std::unique_ptr<location::nearby::api::InputFile> inputFile = nullptr;
   int64_t size = -1;
 
   inputFile = location::nearby::api::ImplementationPlatform::CreateInputFile(
-      payloadId, strlen(TEST_STRING));
+      TEST_FILE_PATH.c_str());
 
   size = inputFile->GetTotalSize();
 
@@ -114,11 +107,10 @@ TEST_F(InputFileTests, SuccessfulGetTotalSize) {
 }
 
 TEST_F(InputFileTests, SuccessfulRead) {
-  location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
   std::unique_ptr<location::nearby::api::InputFile> inputFile = nullptr;
 
   inputFile = location::nearby::api::ImplementationPlatform::CreateInputFile(
-      payloadId, strlen(TEST_STRING));
+      TEST_FILE_PATH.c_str());
 
   auto fileSize = inputFile->GetTotalSize();
   auto dataRead = inputFile->Read(fileSize);
@@ -131,11 +123,10 @@ TEST_F(InputFileTests, SuccessfulRead) {
 }
 
 TEST_F(InputFileTests, FailedRead) {
-  location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
   std::unique_ptr<location::nearby::api::InputFile> inputFile = nullptr;
 
   inputFile = location::nearby::api::ImplementationPlatform::CreateInputFile(
-      payloadId, strlen(TEST_STRING));
+      TEST_FILE_PATH.c_str());
 
   auto fileSize = inputFile->GetTotalSize();
   EXPECT_NE(fileSize, -1);

cpp/platform/impl/windows/output_file.h

@@ -1,47 +0,0 @@
-// Copyright 2020 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef PLATFORM_IMPL_WINDOWS_OUTPUT_FILE_H_
-#define PLATFORM_IMPL_WINDOWS_OUTPUT_FILE_H_
-
-#include "platform/api/output_file.h"
-#include "platform/base/byte_array.h"
-#include "platform/base/exception.h"
-
-namespace location {
-namespace nearby {
-namespace windows {
-
-// An OutputFile represents a writable file on the system.
-class OutputFile : public api::OutputFile {
- public:
-  // TODO(b/184975123): replace with real implementation.
-  ~OutputFile() override = default;
-
-  // throws Exception::kIo
-  // TODO(b/184975123): replace with real implementation.
-  Exception Write(const ByteArray& data) override { return Exception{}; }
-  // throws Exception::kIo
-  // TODO(b/184975123): replace with real implementation.
-  Exception Flush() override { return Exception{}; }
-  // throws Exception::kIo
-  // TODO(b/184975123): replace with real implementation.
-  Exception Close() override { return Exception{}; }
-};
-
-}  // namespace windows
-}  // namespace nearby
-}  // namespace location
-
-#endif  // PLATFORM_IMPL_WINDOWS_OUTPUT_FILE_H_

cpp/platform/impl/windows/output_file_test.cc

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "platform/impl/windows/output_file.h"
-
 #include "gtest/gtest.h"
 #include "platform/api/platform.h"
 #include "platform/base/exception.h"
@@ -24,17 +22,15 @@ class OutputFileTests : public testing::Test {
  protected:
   // You can define per-test set-up logic as usual.
   void SetUp() override {
-    location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
-    if (FileExists(test_utils::GetPayloadPath(payloadId).c_str())) {
-      DeleteFileA(test_utils::GetPayloadPath(payloadId).c_str());
+    if (FileExists(TEST_FILE_PATH.c_str())) {
+      DeleteFileA(TEST_FILE_PATH.c_str());
     }
   }
 
   // You can define per-test tear-down logic as usual.
   void TearDown() override {
-    location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
-    if (FileExists(test_utils::GetPayloadPath(payloadId).c_str())) {
-      DeleteFileA(test_utils::GetPayloadPath(payloadId).c_str());
+    if (FileExists(TEST_FILE_PATH.c_str())) {
+      DeleteFileA(TEST_FILE_PATH.c_str());
     }
   }
 
@@ -47,44 +43,41 @@ class OutputFileTests : public testing::Test {
 };
 
 TEST_F(OutputFileTests, SuccessfulCreation) {
-  location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
   std::unique_ptr<location::nearby::api::OutputFile> outputFile = nullptr;
 
   EXPECT_NO_THROW(
       outputFile =
           location::nearby::api::ImplementationPlatform::CreateOutputFile(
-              payloadId));
+              TEST_FILE_PATH.c_str()));
 
   EXPECT_NE(outputFile, nullptr);
   EXPECT_NO_THROW(outputFile->Close());
 }
 
 TEST_F(OutputFileTests, SuccessfulClose) {
-  location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
   std::unique_ptr<location::nearby::api::OutputFile> outputFile = nullptr;
 
   EXPECT_NO_THROW(
       outputFile =
           location::nearby::api::ImplementationPlatform::CreateOutputFile(
-              payloadId));
+              TEST_FILE_PATH.c_str()));
 
   EXPECT_NO_THROW(outputFile->Close());
 
-  DeleteFileA(test_utils::GetPayloadPath(payloadId).c_str());
+  DeleteFileA(TEST_FILE_PATH.c_str());
 }
 
 TEST_F(OutputFileTests, SuccessfulWrite) {
-  location::nearby::PayloadId payloadId(TEST_PAYLOAD_ID);
   location::nearby::ByteArray data(std::string(TEST_STRING));
   std::unique_ptr<location::nearby::api::OutputFile> outputFile = nullptr;
 
   EXPECT_NO_THROW(
       outputFile =
           location::nearby::api::ImplementationPlatform::CreateOutputFile(
-              payloadId));
+              TEST_FILE_PATH.c_str()));
 
   EXPECT_NO_THROW(outputFile->Write(data));
   EXPECT_NO_THROW(outputFile->Close());
 
-  DeleteFileA(test_utils::GetPayloadPath(payloadId).c_str());
+  DeleteFileA(TEST_FILE_PATH.c_str());
 }

cpp/platform/impl/windows/platform.cc

@@ -41,9 +41,9 @@
 namespace location {
 namespace nearby {
 namespace api {
-namespace {
 
-std::string GetPayloadPath(PayloadId payload_id) {
+std::unique_ptr<std::string> ImplementationPlatform::GetDownloadPath(
+    std::unique_ptr<std::string> path) {
   PWSTR basePath;
 
   // Retrieves the full path of a known folder identified by the folder's
@@ -61,13 +61,12 @@ std::string GetPayloadPath(PayloadId payload_id) {
                    // is no longer needed by calling CoTaskMemFree, whether
                    // SHGetKnownFolderPath succeeds or not.
 
-  char* fullpathUTF8 = new char((wcslen(basePath) + 1) * sizeof(char));
-  wcstombs(fullpathUTF8, basePath, (wcslen(basePath) + 1) * sizeof(char));
-  std::string fullPath = std::string(fullpathUTF8);
-  auto retval = absl::StrCat(fullPath += "/", payload_id);
-  return retval;
+  auto basePathLength = (wcslen(basePath) + 1) * sizeof(char);
+  char* fullpathUTF8 = new char(basePathLength);
+  wcstombs(fullpathUTF8, basePath, basePathLength);
+  return std::make_unique<std::string>(std::string(fullpathUTF8) +=
+                                       "/" + *path);
 }
-}  // namespace
 
 std::unique_ptr<AtomicBoolean> ImplementationPlatform::CreateAtomicBoolean(
     bool initial_value) {
@@ -94,14 +93,13 @@ ImplementationPlatform::CreateConditionVariable(Mutex* mutex) {
 }
 
 std::unique_ptr<InputFile> ImplementationPlatform::CreateInputFile(
-    PayloadId payload_id, std::int64_t total_size) {
-  return absl::make_unique<shared::InputFile>(GetPayloadPath(payload_id),
-                                              total_size);
+    const char* file_path) {
+  return absl::make_unique<shared::InputFile>(file_path);
 }
 
 std::unique_ptr<OutputFile> ImplementationPlatform::CreateOutputFile(
-    PayloadId payload_id) {
-  return absl::make_unique<shared::OutputFile>(GetPayloadPath(payload_id));
+    const char* file_path) {
+  return absl::make_unique<shared::OutputFile>(file_path);
 }
 
 // TODO(b/184975123): replace with real implementation.

cpp/platform/impl/windows/scheduled_executor_test.cc

@@ -31,15 +31,21 @@ TEST(ScheduledExecutorTests, ExecuteSucceeds) {
   std::unique_ptr<std::vector<DWORD>> threadIds =
       std::make_unique<std::vector<DWORD>>();
 
+  CRITICAL_SECTION crit_sec;
+  InitializeCriticalSection(&crit_sec);
+
   threadIds->push_back(GetCurrentThreadId());
 
   // Act
-  submittableExecutor->Execute([&output, &threadIds]() {
+  submittableExecutor->Execute([&output, &threadIds, &crit_sec]() {
+    EnterCriticalSection(&crit_sec);
     threadIds->push_back(GetCurrentThreadId());
     output.append(RUNNABLE_0_TEXT.c_str());
+    LeaveCriticalSection(&crit_sec);
   });
 
   submittableExecutor->Shutdown();
+  DeleteCriticalSection(&crit_sec);
 
   //  Assert
   //  We should've run 1 time on the main thread, and 1 times on the
@@ -63,6 +69,9 @@ TEST(ScheduledExecutorTests, ScheduleSucceeds) {
   std::unique_ptr<std::vector<DWORD>> threadIds =
       std::make_unique<std::vector<DWORD>>();
 
+  CRITICAL_SECTION crit_sec;
+  InitializeCriticalSection(&crit_sec);
+
   threadIds->push_back(GetCurrentThreadId());
 
   std::chrono::system_clock::time_point timeNow =
@@ -71,16 +80,19 @@ TEST(ScheduledExecutorTests, ScheduleSucceeds) {
 
   // Act
   submittableExecutor->Schedule(
-      [&output, &threadIds, &timeExecuted]() {
+      [&output, &threadIds, &timeExecuted, &crit_sec]() {
+        EnterCriticalSection(&crit_sec);
         timeExecuted = std::chrono::system_clock::now();
         threadIds->push_back(GetCurrentThreadId());
         output.append(RUNNABLE_0_TEXT.c_str());
+        LeaveCriticalSection(&crit_sec);
       },
       absl::Milliseconds(50));
 
   SleepEx(100, true);  //  Yield the thread
 
   submittableExecutor->Shutdown();
+  DeleteCriticalSection(&crit_sec);
 
   auto difference = std::chrono::duration_cast<std::chrono::milliseconds>(
                         timeExecuted - timeNow)
@@ -148,13 +160,18 @@ TEST(ScheduledExecutorTests, CancelAfterStartedFails) {
   std::unique_ptr<std::vector<DWORD>> threadIds =
       std::make_unique<std::vector<DWORD>>();
 
+  CRITICAL_SECTION crit_sec;
+  InitializeCriticalSection(&crit_sec);
+
   threadIds->push_back(GetCurrentThreadId());
 
   // Act
   auto cancelable = submittableExecutor->Schedule(
-      [&output, &threadIds]() {
+      [&output, &threadIds, &crit_sec]() {
+        EnterCriticalSection(&crit_sec);
         threadIds->push_back(GetCurrentThreadId());
         output.append(RUNNABLE_0_TEXT.c_str());
+        LeaveCriticalSection(&crit_sec);
       },
       absl::Milliseconds(100));
 
@@ -163,6 +180,7 @@ TEST(ScheduledExecutorTests, CancelAfterStartedFails) {
   auto actual = cancelable->Cancel();
 
   submittableExecutor->Shutdown();
+  DeleteCriticalSection(&crit_sec);
 
   // Assert
   ASSERT_FALSE(actual);

cpp/platform/impl/windows/submittable_executor_test.cc

@@ -164,19 +164,25 @@ TEST(SubmittableExecutorTests, SingleThreadedExecuteMultipleTasksSucceeds) {
   std::unique_ptr<std::vector<DWORD>> threadIds =
       std::make_unique<std::vector<DWORD>>();
 
+  CRITICAL_SECTION crit_sec;
+  InitializeCriticalSection(&crit_sec);
+
   threadIds->push_back(GetCurrentThreadId());
 
   // Act
   for (int index = 0; index < 5; index++) {
-    submittableExecutor->Execute([&output, &threadIds, index]() {
+    submittableExecutor->Execute([&output, &threadIds, &crit_sec, index]() {
+      EnterCriticalSection(&crit_sec);
       threadIds->push_back(GetCurrentThreadId());
       char buffer[128];
       snprintf(buffer, sizeof(buffer), "%s%d, ", RUNNABLE_TEXT.c_str(), index);
       output->append(std::string(buffer));
+      LeaveCriticalSection(&crit_sec);
     });
   }
 
   submittableExecutor->Shutdown();
+  DeleteCriticalSection(&crit_sec);
 
   //  Assert
   //  We should've run 1 time on the main thread, and 5 times on the
@@ -206,20 +212,27 @@ TEST(SubmittableExecutorTests, SingleThreadedDoSubmitMultipleTasksSucceeds) {
   std::unique_ptr<std::vector<DWORD>> threadIds =
       std::make_unique<std::vector<DWORD>>();
 
+  CRITICAL_SECTION crit_sec;
+  InitializeCriticalSection(&crit_sec);
+
   threadIds->push_back(GetCurrentThreadId());
 
   // Act
   bool result = true;
   for (int index = 0; index < 5; index++) {
-    result &= submittableExecutor->DoSubmit([&output, &threadIds, index]() {
+    result &= submittableExecutor->DoSubmit([&output, &threadIds, &crit_sec,
+                                             index]() {
+      EnterCriticalSection(&crit_sec);
       threadIds->push_back(GetCurrentThreadId());
       char buffer[128];
       snprintf(buffer, sizeof(buffer), "%s%d, ", RUNNABLE_TEXT.c_str(), index);
       output->append(std::string(buffer));
+      LeaveCriticalSection(&crit_sec);
     });
   }
 
   submittableExecutor->Shutdown();
+  DeleteCriticalSection(&crit_sec);
 
   //  Assert
   //  All of these should have submitted

cpp/platform/impl/windows/test_utils.cc

@@ -19,39 +19,14 @@
 #include "absl/strings/str_cat.h"
 
 namespace test_utils {
-std::wstring StringToWideString(const std::string& s) {
+std::wstring StringToWideString(const std::string &s) {
   int len;
   int slength = (int)s.length() + 1;
   len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0);
-  wchar_t* buf = new wchar_t[len];
+  wchar_t *buf = new wchar_t[len];
   MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf, len);
   std::wstring r(buf);
   delete[] buf;
   return r;
 }
-
-std::string GetPayloadPath(location::nearby::PayloadId payload_id) {
-  PWSTR basePath;
-
-  // Retrieves the full path of a known folder identified by the folder's
-  // KNOWNFOLDERID.
-  // https://docs.microsoft.com/en-us/windows/win32/api/shlobj_core/nf-shlobj_core-shgetknownfolderpath
-  SHGetKnownFolderPath(
-      FOLDERID_Downloads,  //  rfid: A reference to the KNOWNFOLDERID that
-                           //  identifies the folder.
-      0,           // dwFlags: Flags that specify special retrieval options.
-      NULL,        // hToken: An access token that represents a particular user.
-      &basePath);  // ppszPath: When this method returns, contains the address
-                   // of a pointer to a null-terminated Unicode string that
-                   // specifies the path of the known folder. The calling
-                   // process is responsible for freeing this resource once it
-                   // is no longer needed by calling CoTaskMemFree, whether
-                   // SHGetKnownFolderPath succeeds or not.
-
-  char* fullpathUTF8 = new char((wcslen(basePath) + 1) * sizeof(char));
-  wcstombs(fullpathUTF8, basePath, (wcslen(basePath) + 1) * sizeof(char));
-  std::string fullPath = std::string(fullpathUTF8);
-  auto retval = absl::StrCat(fullPath += "/", payload_id);
-  return retval;
-}
 }  // namespace test_utils

cpp/platform/impl/windows/test_utils.h

@@ -15,14 +15,8 @@
 #ifndef PLATFORM_IMPL_WINDOWS_TEST_UTILS_H_
 #define PLATFORM_IMPL_WINDOWS_TEST_UTILS_H_
 
-#include <Windows.h>
-#include <stdio.h>
-
-#include <string>
 #include <xstring>
 
-#include "platform/base/payload_id.h"
-
 #define TEST_BUFFER_SIZE 256
 #define TEST_PAYLOAD_ID 64l
 #define TEST_STRING                                                            \
@@ -39,9 +33,21 @@
   "eu tellus. Cras feugiat ornare vestibulum. Nullam at ipsum vestibulum "     \
   "sapien luctus dictum ac vel ligula."
 
+#define TEST_FILE_PATH std::string("testfilename.txt")
+
 namespace test_utils {
 std::wstring StringToWideString(const std::string& s);
-std::string GetPayloadPath(location::nearby::PayloadId payload_id);
+
+class TempPath {
+ public:
+  enum Location {
+    Local,    // Some local directory, works for unittest and on borglets.
+    CNSTest,  // Creates a directory on the cns test cell.
+  };
+  TempPath(Location location) : location_(location) {}
+  Location location_;
+  const std::string path() { return ""; }
+};
 }  // namespace test_utils
 
 #endif  // PLATFORM_IMPL_WINDOWS_TEST_UTILS_H_