diff --git a/runtime/dart_isolate_unittests.cc b/runtime/dart_isolate_unittests.cc
index 98644a1fc7c08..a3e03b59b0604 100644
--- a/runtime/dart_isolate_unittests.cc
+++ b/runtime/dart_isolate_unittests.cc
@@ -29,11 +29,11 @@ TEST_F(DartIsolateTest, RootIsolateCreationAndShutdown) {
   ASSERT_TRUE(vm_ref);
   auto vm_data = vm_ref.GetVMData();
   ASSERT_TRUE(vm_data);
-  TaskRunners task_runners(::testing::GetCurrentTestName(),  //
-                           GetCurrentTaskRunner(),           //
-                           GetCurrentTaskRunner(),           //
-                           GetCurrentTaskRunner(),           //
-                           GetCurrentTaskRunner()            //
+  TaskRunners task_runners(GetCurrentTestName(),    //
+                           GetCurrentTaskRunner(),  //
+                           GetCurrentTaskRunner(),  //
+                           GetCurrentTaskRunner(),  //
+                           GetCurrentTaskRunner()   //
   );
   auto weak_isolate = DartIsolate::CreateRootIsolate(
       vm_data->GetSettings(),             // settings
@@ -62,11 +62,11 @@ TEST_F(DartIsolateTest, IsolateShutdownCallbackIsInIsolateScope) {
   ASSERT_TRUE(vm_ref);
   auto vm_data = vm_ref.GetVMData();
   ASSERT_TRUE(vm_data);
-  TaskRunners task_runners(::testing::GetCurrentTestName(),  //
-                           GetCurrentTaskRunner(),           //
-                           GetCurrentTaskRunner(),           //
-                           GetCurrentTaskRunner(),           //
-                           GetCurrentTaskRunner()            //
+  TaskRunners task_runners(GetCurrentTestName(),    //
+                           GetCurrentTaskRunner(),  //
+                           GetCurrentTaskRunner(),  //
+                           GetCurrentTaskRunner(),  //
+                           GetCurrentTaskRunner()   //
   );
   auto weak_isolate = DartIsolate::CreateRootIsolate(
       vm_data->GetSettings(),             // settings
@@ -164,11 +164,11 @@ static void RunDartCodeInIsolate(DartVMRef& vm_ref,
     return;
   }
 
-  TaskRunners task_runners(::testing::GetCurrentTestName(),  //
-                           task_runner,                      //
-                           task_runner,                      //
-                           task_runner,                      //
-                           task_runner                       //
+  TaskRunners task_runners(GetCurrentTestName(),  //
+                           task_runner,           //
+                           task_runner,           //
+                           task_runner,           //
+                           task_runner            //
   );
 
   auto vm_data = vm_ref.GetVMData();
@@ -206,8 +206,8 @@ static void RunDartCodeInIsolate(DartVMRef& vm_ref,
   }
 
   if (!DartVM::IsRunningPrecompiledCode()) {
-    auto kernel_file_path = fml::paths::JoinPaths(
-        {::testing::GetFixturesPath(), "kernel_blob.bin"});
+    auto kernel_file_path =
+        fml::paths::JoinPaths({GetFixturesPath(), "kernel_blob.bin"});
 
     if (!fml::IsFile(kernel_file_path)) {
       FML_LOG(ERROR) << "Could not locate kernel file.";
diff --git a/runtime/runtime_test.cc b/runtime/runtime_test.cc
index 264e619ffdde3..455a52c95a67a 100644
--- a/runtime/runtime_test.cc
+++ b/runtime/runtime_test.cc
@@ -11,7 +11,7 @@ namespace flutter {
 namespace testing {
 
 RuntimeTest::RuntimeTest()
-    : native_resolver_(std::make_shared<::testing::TestDartNativeResolver>()) {}
+    : native_resolver_(std::make_shared<TestDartNativeResolver>()) {}
 
 RuntimeTest::~RuntimeTest() = default;
 
@@ -69,8 +69,8 @@ Settings RuntimeTest::CreateSettingsForFixture() {
 
 // |testing::ThreadTest|
 void RuntimeTest::SetUp() {
-  assets_dir_ = fml::OpenDirectory(::testing::GetFixturesPath(), false,
-                                   fml::FilePermission::kRead);
+  assets_dir_ =
+      fml::OpenDirectory(GetFixturesPath(), false, fml::FilePermission::kRead);
   ThreadTest::SetUp();
 }
 
diff --git a/runtime/runtime_test.h b/runtime/runtime_test.h
index 40f781cf8f97a..8c60a6e858a6c 100644
--- a/runtime/runtime_test.h
+++ b/runtime/runtime_test.h
@@ -15,7 +15,7 @@
 namespace flutter {
 namespace testing {
 
-class RuntimeTest : public ::testing::ThreadTest {
+class RuntimeTest : public ThreadTest {
  public:
   RuntimeTest();
 
@@ -34,7 +34,7 @@ class RuntimeTest : public ::testing::ThreadTest {
 
  private:
   fml::UniqueFD assets_dir_;
-  std::shared_ptr<::testing::TestDartNativeResolver> native_resolver_;
+  std::shared_ptr<TestDartNativeResolver> native_resolver_;
 
   void SetSnapshotsAndAssets(Settings& settings);
 };
diff --git a/shell/common/shell_test.cc b/shell/common/shell_test.cc
index a6c958f7bbfa8..54bbd9d18f79e 100644
--- a/shell/common/shell_test.cc
+++ b/shell/common/shell_test.cc
@@ -14,7 +14,7 @@ namespace flutter {
 namespace testing {
 
 ShellTest::ShellTest()
-    : native_resolver_(std::make_shared<::testing::TestDartNativeResolver>()) {}
+    : native_resolver_(std::make_shared<TestDartNativeResolver>()) {}
 
 ShellTest::~ShellTest() = default;
 
@@ -87,10 +87,10 @@ TaskRunners ShellTest::GetTaskRunnersForFixture() {
 // |testing::ThreadTest|
 void ShellTest::SetUp() {
   ThreadTest::SetUp();
-  assets_dir_ = fml::OpenDirectory(::testing::GetFixturesPath(), false,
-                                   fml::FilePermission::kRead);
+  assets_dir_ =
+      fml::OpenDirectory(GetFixturesPath(), false, fml::FilePermission::kRead);
   thread_host_ = std::make_unique<ThreadHost>(
-      "io.flutter.test." + ::testing::GetCurrentTestName() + ".",
+      "io.flutter.test." + GetCurrentTestName() + ".",
       ThreadHost::Type::Platform | ThreadHost::Type::IO | ThreadHost::Type::UI |
           ThreadHost::Type::GPU);
 }
@@ -107,5 +107,30 @@ void ShellTest::AddNativeCallback(std::string name,
   native_resolver_->AddNativeCallback(std::move(name), callback);
 }
 
+ShellTestPlatformView::ShellTestPlatformView(PlatformView::Delegate& delegate,
+                                             TaskRunners task_runners)
+    : PlatformView(delegate, std::move(task_runners)) {}
+
+ShellTestPlatformView::~ShellTestPlatformView() = default;
+
+// |PlatformView|
+std::unique_ptr<Surface> ShellTestPlatformView::CreateRenderingSurface() {
+  return std::make_unique<GPUSurfaceSoftware>(this);
+}
+
+// |GPUSurfaceSoftwareDelegate|
+sk_sp<SkSurface> ShellTestPlatformView::AcquireBackingStore(
+    const SkISize& size) {
+  SkImageInfo image_info = SkImageInfo::MakeN32Premul(
+      size.width(), size.height(), SkColorSpace::MakeSRGB());
+  return SkSurface::MakeRaster(image_info);
+}
+
+// |GPUSurfaceSoftwareDelegate|
+bool ShellTestPlatformView::PresentBackingStore(
+    sk_sp<SkSurface> backing_store) {
+  return true;
+}
+
 }  // namespace testing
 }  // namespace flutter
diff --git a/shell/common/shell_test.h b/shell/common/shell_test.h
index c88fde85aa812..e011cb6e9d237 100644
--- a/shell/common/shell_test.h
+++ b/shell/common/shell_test.h
@@ -10,14 +10,16 @@
 #include "flutter/common/settings.h"
 #include "flutter/fml/macros.h"
 #include "flutter/shell/common/run_configuration.h"
+#include "flutter/shell/common/shell.h"
 #include "flutter/shell/common/thread_host.h"
+#include "flutter/shell/gpu/gpu_surface_software.h"
 #include "flutter/testing/test_dart_native_resolver.h"
 #include "flutter/testing/thread_test.h"
 
 namespace flutter {
 namespace testing {
 
-class ShellTest : public ::testing::ThreadTest {
+class ShellTest : public ThreadTest {
  public:
   ShellTest();
 
@@ -38,12 +40,33 @@ class ShellTest : public ::testing::ThreadTest {
 
  private:
   fml::UniqueFD assets_dir_;
-  std::shared_ptr<::testing::TestDartNativeResolver> native_resolver_;
+  std::shared_ptr<TestDartNativeResolver> native_resolver_;
   std::unique_ptr<ThreadHost> thread_host_;
 
   void SetSnapshotsAndAssets(Settings& settings);
 };
 
+class ShellTestPlatformView : public PlatformView,
+                              public GPUSurfaceSoftwareDelegate {
+ public:
+  ShellTestPlatformView(PlatformView::Delegate& delegate,
+                        TaskRunners task_runners);
+
+  ~ShellTestPlatformView() override;
+
+ private:
+  // |PlatformView|
+  std::unique_ptr<Surface> CreateRenderingSurface() override;
+
+  // |GPUSurfaceSoftwareDelegate|
+  virtual sk_sp<SkSurface> AcquireBackingStore(const SkISize& size) override;
+
+  // |GPUSurfaceSoftwareDelegate|
+  virtual bool PresentBackingStore(sk_sp<SkSurface> backing_store) override;
+
+  FML_DISALLOW_COPY_AND_ASSIGN(ShellTestPlatformView);
+};
+
 }  // namespace testing
 }  // namespace flutter
 
diff --git a/shell/common/shell_unittests.cc b/shell/common/shell_unittests.cc
index b18cdf2cd1dff..2ad540ee830e2 100644
--- a/shell/common/shell_unittests.cc
+++ b/shell/common/shell_unittests.cc
@@ -14,43 +14,13 @@
 #include "flutter/fml/synchronization/waitable_event.h"
 #include "flutter/shell/common/platform_view.h"
 #include "flutter/shell/common/rasterizer.h"
-#include "flutter/shell/common/shell.h"
 #include "flutter/shell/common/shell_test.h"
 #include "flutter/shell/common/thread_host.h"
-#include "flutter/shell/gpu/gpu_surface_software.h"
 #include "flutter/testing/testing.h"
-#include "gtest/gtest.h"
 
 namespace flutter {
 namespace testing {
 
-class TestPlatformView : public PlatformView,
-                         public GPUSurfaceSoftwareDelegate {
- public:
-  TestPlatformView(PlatformView::Delegate& delegate, TaskRunners task_runners)
-      : PlatformView(delegate, std::move(task_runners)) {}
-
- private:
-  // |PlatformView|
-  std::unique_ptr<Surface> CreateRenderingSurface() override {
-    return std::make_unique<GPUSurfaceSoftware>(this);
-  }
-
-  // |GPUSurfaceSoftwareDelegate|
-  virtual sk_sp<SkSurface> AcquireBackingStore(const SkISize& size) override {
-    SkImageInfo image_info = SkImageInfo::MakeN32Premul(
-        size.width(), size.height(), SkColorSpace::MakeSRGB());
-    return SkSurface::MakeRaster(image_info);
-  }
-
-  // |GPUSurfaceSoftwareDelegate|
-  virtual bool PresentBackingStore(sk_sp<SkSurface> backing_store) override {
-    return true;
-  }
-
-  FML_DISALLOW_COPY_AND_ASSIGN(TestPlatformView);
-};
-
 static bool ValidateShell(Shell* shell) {
   if (!shell) {
     return false;
@@ -90,8 +60,8 @@ TEST_F(ShellTest, InitializeWithInvalidThreads) {
   auto shell = Shell::Create(
       std::move(task_runners), settings,
       [](Shell& shell) {
-        return std::make_unique<TestPlatformView>(shell,
-                                                  shell.GetTaskRunners());
+        return std::make_unique<ShellTestPlatformView>(shell,
+                                                       shell.GetTaskRunners());
       },
       [](Shell& shell) {
         return std::make_unique<Rasterizer>(shell.GetTaskRunners());
@@ -103,10 +73,9 @@ TEST_F(ShellTest, InitializeWithInvalidThreads) {
 TEST_F(ShellTest, InitializeWithDifferentThreads) {
   ASSERT_FALSE(DartVMRef::IsInstanceRunning());
   Settings settings = CreateSettingsForFixture();
-  ThreadHost thread_host(
-      "io.flutter.test." + ::testing::GetCurrentTestName() + ".",
-      ThreadHost::Type::Platform | ThreadHost::Type::GPU |
-          ThreadHost::Type::IO | ThreadHost::Type::UI);
+  ThreadHost thread_host("io.flutter.test." + GetCurrentTestName() + ".",
+                         ThreadHost::Type::Platform | ThreadHost::Type::GPU |
+                             ThreadHost::Type::IO | ThreadHost::Type::UI);
   TaskRunners task_runners("test", thread_host.platform_thread->GetTaskRunner(),
                            thread_host.gpu_thread->GetTaskRunner(),
                            thread_host.ui_thread->GetTaskRunner(),
@@ -114,8 +83,8 @@ TEST_F(ShellTest, InitializeWithDifferentThreads) {
   auto shell = Shell::Create(
       std::move(task_runners), settings,
       [](Shell& shell) {
-        return std::make_unique<TestPlatformView>(shell,
-                                                  shell.GetTaskRunners());
+        return std::make_unique<ShellTestPlatformView>(shell,
+                                                       shell.GetTaskRunners());
       },
       [](Shell& shell) {
         return std::make_unique<Rasterizer>(shell.GetTaskRunners());
@@ -129,17 +98,16 @@ TEST_F(ShellTest, InitializeWithDifferentThreads) {
 TEST_F(ShellTest, InitializeWithSingleThread) {
   ASSERT_FALSE(DartVMRef::IsInstanceRunning());
   Settings settings = CreateSettingsForFixture();
-  ThreadHost thread_host(
-      "io.flutter.test." + ::testing::GetCurrentTestName() + ".",
-      ThreadHost::Type::Platform);
+  ThreadHost thread_host("io.flutter.test." + GetCurrentTestName() + ".",
+                         ThreadHost::Type::Platform);
   auto task_runner = thread_host.platform_thread->GetTaskRunner();
   TaskRunners task_runners("test", task_runner, task_runner, task_runner,
                            task_runner);
   auto shell = Shell::Create(
       std::move(task_runners), settings,
       [](Shell& shell) {
-        return std::make_unique<TestPlatformView>(shell,
-                                                  shell.GetTaskRunners());
+        return std::make_unique<ShellTestPlatformView>(shell,
+                                                       shell.GetTaskRunners());
       },
       [](Shell& shell) {
         return std::make_unique<Rasterizer>(shell.GetTaskRunners());
@@ -160,8 +128,8 @@ TEST_F(ShellTest, InitializeWithSingleThreadWhichIsTheCallingThread) {
   auto shell = Shell::Create(
       std::move(task_runners), settings,
       [](Shell& shell) {
-        return std::make_unique<TestPlatformView>(shell,
-                                                  shell.GetTaskRunners());
+        return std::make_unique<ShellTestPlatformView>(shell,
+                                                       shell.GetTaskRunners());
       },
       [](Shell& shell) {
         return std::make_unique<Rasterizer>(shell.GetTaskRunners());
@@ -177,7 +145,7 @@ TEST_F(ShellTest,
   ASSERT_FALSE(DartVMRef::IsInstanceRunning());
   Settings settings = CreateSettingsForFixture();
   ThreadHost thread_host(
-      "io.flutter.test." + ::testing::GetCurrentTestName() + ".",
+      "io.flutter.test." + GetCurrentTestName() + ".",
       ThreadHost::Type::GPU | ThreadHost::Type::IO | ThreadHost::Type::UI);
   fml::MessageLoop::EnsureInitializedForCurrentThread();
   TaskRunners task_runners("test",
@@ -188,8 +156,8 @@ TEST_F(ShellTest,
   auto shell = Shell::Create(
       std::move(task_runners), settings,
       [](Shell& shell) {
-        return std::make_unique<TestPlatformView>(shell,
-                                                  shell.GetTaskRunners());
+        return std::make_unique<ShellTestPlatformView>(shell,
+                                                       shell.GetTaskRunners());
       },
       [](Shell& shell) {
         return std::make_unique<Rasterizer>(shell.GetTaskRunners());
@@ -204,7 +172,7 @@ TEST_F(ShellTest, InitializeWithGPUAndPlatformThreadsTheSame) {
   ASSERT_FALSE(DartVMRef::IsInstanceRunning());
   Settings settings = CreateSettingsForFixture();
   ThreadHost thread_host(
-      "io.flutter.test." + ::testing::GetCurrentTestName() + ".",
+      "io.flutter.test." + GetCurrentTestName() + ".",
       ThreadHost::Type::Platform | ThreadHost::Type::IO | ThreadHost::Type::UI);
   TaskRunners task_runners(
       "test",
@@ -216,8 +184,8 @@ TEST_F(ShellTest, InitializeWithGPUAndPlatformThreadsTheSame) {
   auto shell = Shell::Create(
       std::move(task_runners), settings,
       [](Shell& shell) {
-        return std::make_unique<TestPlatformView>(shell,
-                                                  shell.GetTaskRunners());
+        return std::make_unique<ShellTestPlatformView>(shell,
+                                                       shell.GetTaskRunners());
       },
       [](Shell& shell) {
         return std::make_unique<Rasterizer>(shell.GetTaskRunners());
@@ -234,8 +202,8 @@ TEST_F(ShellTest, FixturesAreFunctional) {
   auto shell = Shell::Create(
       GetTaskRunnersForFixture(), settings,
       [](Shell& shell) {
-        return std::make_unique<TestPlatformView>(shell,
-                                                  shell.GetTaskRunners());
+        return std::make_unique<ShellTestPlatformView>(shell,
+                                                       shell.GetTaskRunners());
       },
       [](Shell& shell) {
         return std::make_unique<Rasterizer>(shell.GetTaskRunners());
@@ -274,8 +242,8 @@ TEST_F(ShellTest, SecondaryIsolateBindingsAreSetupViaShellSettings) {
   auto shell = Shell::Create(
       GetTaskRunnersForFixture(), settings,
       [](Shell& shell) {
-        return std::make_unique<TestPlatformView>(shell,
-                                                  shell.GetTaskRunners());
+        return std::make_unique<ShellTestPlatformView>(shell,
+                                                       shell.GetTaskRunners());
       },
       [](Shell& shell) {
         return std::make_unique<Rasterizer>(shell.GetTaskRunners());
diff --git a/shell/platform/embedder/tests/embedder_a11y_unittests.cc b/shell/platform/embedder/tests/embedder_a11y_unittests.cc
index 5da4938175bfb..eb83886ae0eed 100644
--- a/shell/platform/embedder/tests/embedder_a11y_unittests.cc
+++ b/shell/platform/embedder/tests/embedder_a11y_unittests.cc
@@ -34,7 +34,7 @@ TEST_F(Embedder11yTest, A11yTreeIsConsistent) {
       })));
 
   // Called by test fixture on UI thread to pass data back to this test.
-  ::testing::NativeEntry callback;
+  NativeEntry callback;
   context.AddNativeCallback(
       "NotifyTestData",
       CREATE_NATIVE_ENTRY(([&callback](Dart_NativeArguments args) {
diff --git a/shell/platform/embedder/tests/embedder_context.cc b/shell/platform/embedder/tests/embedder_context.cc
index eecec06fe8c9a..46b8c2e6f14bd 100644
--- a/shell/platform/embedder/tests/embedder_context.cc
+++ b/shell/platform/embedder/tests/embedder_context.cc
@@ -11,7 +11,7 @@ namespace testing {
 
 EmbedderContext::EmbedderContext(std::string assets_path)
     : assets_path_(std::move(assets_path)),
-      native_resolver_(std::make_shared<::testing::TestDartNativeResolver>()) {
+      native_resolver_(std::make_shared<TestDartNativeResolver>()) {
   auto assets_dir = fml::OpenDirectory(assets_path_.c_str(), false,
                                        fml::FilePermission::kRead);
   vm_snapshot_data_ =
@@ -27,8 +27,8 @@ EmbedderContext::EmbedderContext(std::string assets_path)
   }
 
   isolate_create_callbacks_.push_back(
-      [weak_resolver = std::weak_ptr<::testing::TestDartNativeResolver>{
-           native_resolver_}]() {
+      [weak_resolver =
+           std::weak_ptr<TestDartNativeResolver>{native_resolver_}]() {
         if (auto resolver = weak_resolver.lock()) {
           resolver->SetNativeResolverForIsolate();
         }
diff --git a/shell/platform/embedder/tests/embedder_context.h b/shell/platform/embedder/tests/embedder_context.h
index 3ca774ae54c59..5c166063b4c40 100644
--- a/shell/platform/embedder/tests/embedder_context.h
+++ b/shell/platform/embedder/tests/embedder_context.h
@@ -58,7 +58,7 @@ class EmbedderContext {
   std::unique_ptr<fml::Mapping> isolate_snapshot_data_;
   std::unique_ptr<fml::Mapping> isolate_snapshot_instructions_;
   std::vector<fml::closure> isolate_create_callbacks_;
-  std::shared_ptr<::testing::TestDartNativeResolver> native_resolver_;
+  std::shared_ptr<TestDartNativeResolver> native_resolver_;
   SemanticsNodeCallback update_semantics_node_callback_;
   SemanticsActionCallback update_semantics_custom_action_callback_;
 
diff --git a/shell/platform/embedder/tests/embedder_test.cc b/shell/platform/embedder/tests/embedder_test.cc
index 06ae0d21cfcfa..89ca660ba762c 100644
--- a/shell/platform/embedder/tests/embedder_test.cc
+++ b/shell/platform/embedder/tests/embedder_test.cc
@@ -12,7 +12,7 @@ EmbedderTest::EmbedderTest() = default;
 EmbedderTest::~EmbedderTest() = default;
 
 std::string EmbedderTest::GetFixturesDirectory() const {
-  return ::testing::GetFixturesPath();
+  return GetFixturesPath();
 }
 
 EmbedderContext& EmbedderTest::GetEmbedderContext() {
diff --git a/testing/build/gen_fixtures_location_symbol.py b/testing/build/gen_fixtures_location_symbol.py
index 3b66475d4afb8..01f41d2818759 100644
--- a/testing/build/gen_fixtures_location_symbol.py
+++ b/testing/build/gen_fixtures_location_symbol.py
@@ -19,7 +19,7 @@ def main():
   args = parser.parse_args()
 
   with open(args.fixtures_location_file, 'w') as file:
-    file.write('namespace testing {const char* GetFixturesPath() {return "%s";}}'
+    file.write('namespace flutter {namespace testing {const char* GetFixturesPath() {return "%s";}}}'
       % args.fixtures_location)
 
 
diff --git a/testing/run_all_unittests.cc b/testing/run_all_unittests.cc
index 1fa0019be22b4..6d5d11c584fa4 100644
--- a/testing/run_all_unittests.cc
+++ b/testing/run_all_unittests.cc
@@ -5,6 +5,6 @@
 #include "gtest/gtest.h"
 
 int main(int argc, char** argv) {
-  testing::InitGoogleTest(&argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }
diff --git a/testing/test_dart_native_resolver.cc b/testing/test_dart_native_resolver.cc
index a6d3684ad566b..1a439943358b9 100644
--- a/testing/test_dart_native_resolver.cc
+++ b/testing/test_dart_native_resolver.cc
@@ -12,6 +12,7 @@
 #include "third_party/tonic/logging/dart_error.h"
 #include "tonic/converter/dart_converter.h"
 
+namespace flutter {
 namespace testing {
 
 TestDartNativeResolver::TestDartNativeResolver() = default;
@@ -89,3 +90,4 @@ void TestDartNativeResolver::SetNativeResolverForIsolate() {
 }
 
 }  // namespace testing
+}  // namespace flutter
diff --git a/testing/test_dart_native_resolver.h b/testing/test_dart_native_resolver.h
index 632824142d930..66050def9b221 100644
--- a/testing/test_dart_native_resolver.h
+++ b/testing/test_dart_native_resolver.h
@@ -14,7 +14,7 @@
 
 #define CREATE_NATIVE_ENTRY(native_entry)                                   \
   ([&]() {                                                                  \
-    static ::testing::NativeEntry closure;                                  \
+    static ::flutter::testing::NativeEntry closure;                         \
     static Dart_NativeFunction entrypoint = [](Dart_NativeArguments args) { \
       closure(args);                                                        \
     };                                                                      \
@@ -22,6 +22,7 @@
     return entrypoint;                                                      \
   })()
 
+namespace flutter {
 namespace testing {
 
 using NativeEntry = std::function<void(Dart_NativeArguments)>;
@@ -51,5 +52,6 @@ class TestDartNativeResolver
 };
 
 }  // namespace testing
+}  // namespace flutter
 
 #endif  // FLUTTER_TESTING_TEST_DART_NATIVE_RESOLVER_H_
diff --git a/testing/testing.cc b/testing/testing.cc
index c738219541452..2e2225a568036 100644
--- a/testing/testing.cc
+++ b/testing/testing.cc
@@ -4,10 +4,12 @@
 
 #include "testing.h"
 
+namespace flutter {
 namespace testing {
 
 std::string GetCurrentTestName() {
-  return UnitTest::GetInstance()->current_test_info()->name();
+  return ::testing::UnitTest::GetInstance()->current_test_info()->name();
 }
 
 }  // namespace testing
+}  // namespace flutter
diff --git a/testing/testing.h b/testing/testing.h
index 0662055fea502..00fe3806488dc 100644
--- a/testing/testing.h
+++ b/testing/testing.h
@@ -9,6 +9,7 @@
 
 #include "gtest/gtest.h"
 
+namespace flutter {
 namespace testing {
 
 // Returns the directory containing the test fixture for the target if this
@@ -19,5 +20,6 @@ const char* GetFixturesPath();
 std::string GetCurrentTestName();
 
 }  // namespace testing
+}  // namespace flutter
 
 #endif  // TESTING_TESTING_H_
diff --git a/testing/thread_test.cc b/testing/thread_test.cc
index 978d9af532bb6..986afd4e62fbb 100644
--- a/testing/thread_test.cc
+++ b/testing/thread_test.cc
@@ -6,6 +6,7 @@
 
 #include "flutter/testing/thread_test.h"
 
+namespace flutter {
 namespace testing {
 
 // |testing::Test|
@@ -33,3 +34,4 @@ fml::RefPtr<fml::TaskRunner> ThreadTest::GetThreadTaskRunner() {
 }
 
 }  // namespace testing
+}  // namespace flutter
diff --git a/testing/thread_test.h b/testing/thread_test.h
index e4af5e1241b87..6d168b0d0c01a 100644
--- a/testing/thread_test.h
+++ b/testing/thread_test.h
@@ -13,9 +13,10 @@
 #include "flutter/fml/thread.h"
 #include "gtest/gtest.h"
 
+namespace flutter {
 namespace testing {
 
-class ThreadTest : public Test {
+class ThreadTest : public ::testing::Test {
  public:
   fml::RefPtr<fml::TaskRunner> GetCurrentTaskRunner();
 
@@ -35,5 +36,6 @@ class ThreadTest : public Test {
 };
 
 }  // namespace testing
+}  // namespace flutter
 
 #endif  // FLUTTER_TESTING_THREAD_TEST_H_