diff --git a/internal/platform/implementation/linux/test_utils.cc b/internal/platform/implementation/linux/test_utils.cc
new file mode 100644
index 00000000..209a8904
--- /dev/null
+++ b/internal/platform/implementation/linux/test_utils.cc
@@ -0,0 +1,37 @@
+// 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.
+
+#include "internal/platform/implementation/linux/test_utils.h"
+#include "internal/platform/implementation/linux/device_info.h"
+
+#include <algorithm>
+#include <sstream>
+#include <codecvt>
+
+#include "absl/strings/str_format.h"
+#include "absl/strings/str_replace.h"
+
+namespace test_utils {
+std::wstring StringToWideString(const std::string& s) {
+  std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
+  return converter.from_bytes(s);
+}
+
+std::string GetPayloadPath(nearby::PayloadId payload_id) {
+    std::filesystem::path path = nearby::linux::DeviceInfo().GetDownloadPath().value_or(std::string(getenv("HOME")).append("Downloads"));
+
+  return path.string();
+}
+
+}  // namespace test_utils
diff --git a/internal/platform/implementation/linux/test_utils.h b/internal/platform/implementation/linux/test_utils.h
new file mode 100644
index 00000000..5abfb07f
--- /dev/null
+++ b/internal/platform/implementation/linux/test_utils.h
@@ -0,0 +1,43 @@
+// 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_LINUX_TEST_UTILS_H_
+#define PLATFORM_IMPL_LINUX_TEST_UTILS_H_
+
+#include <string>
+
+#include "internal/platform/payload_id.h"
+
+#define TEST_BUFFER_SIZE 256
+#define TEST_PAYLOAD_ID 64l
+#define TEST_STRING                                                            \
+  "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas "         \
+  "eleifend nisl at magna maximus, id finibus mauris ultrices. Mauris "        \
+  "interdum efficitur turpis eget auctor. Nullam commodo metus et ante "       \
+  "bibendum molestie. Donec iaculis ante nec diam rutrum egestas. Proin "      \
+  "maximus metus luctus rutrum congue. Integer et eros nunc. Etiam purus "     \
+  "neque, tincidunt eu elementum in, pharetra sit amet magna. Quisque "        \
+  "consequat aliquam aliquam. Vestibulum ante ipsum primis in faucibus orci "  \
+  "luctus et ultrices posuere cubilia curae; Maecenas a semper eros, a "       \
+  "auctor mi. In luctus diam sem, eu pretium nisi porttitor ac. Sed cursus, "  \
+  "arcu in bibendum feugiat, leo erat finibus massa, ut tincidunt magna nunc " \
+  "eu tellus. Cras feugiat ornare vestibulum. Nullam at ipsum vestibulum "     \
+  "sapien luctus dictum ac vel ligula."
+
+namespace test_utils {
+std::wstring StringToWideString(const std::string& s);
+std::string GetPayloadPath(nearby::PayloadId payload_id);
+}  // namespace test_utils
+
+#endif  // PLATFORM_IMPL_LINUX_TEST_UTILS_H_