diff --git a/audio/2.0/vts/functional/Android.bp b/audio/2.0/vts/functional/Android.bp
index d72fb2cd16..daae7388ea 100644
--- a/audio/2.0/vts/functional/Android.bp
+++ b/audio/2.0/vts/functional/Android.bp
@@ -18,8 +18,7 @@ cc_test {
     name: "VtsHalAudioV2_0TargetTest",
     defaults: ["hidl_defaults"],
     srcs: ["AudioPrimaryHidlHalTest.cpp",
-           "ValidateAudioConfiguration.cpp",
-           "utility/ValidateXml.cpp"],
+           "ValidateAudioConfiguration.cpp"],
     shared_libs: [
         "libbase",
         "liblog",
@@ -30,6 +29,7 @@ cc_test {
         "libxml2",
         "android.hardware.audio@2.0",
         "android.hardware.audio.common@2.0",
+        "android.hardware.audio.common.test.utility",
     ],
     static_libs: ["VtsHalHidlTargetTestBase"],
     cflags: [
diff --git a/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp b/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
index 27479ffd46..eec2b10d84 100644
--- a/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
+++ b/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
@@ -21,9 +21,7 @@
 #include <cstddef>
 #include <cstdio>
 #include <limits>
-#include <list>
 #include <string>
-#include <type_traits>
 #include <vector>
 
 #include <VtsHalHidlTargetTestBase.h>
@@ -37,6 +35,8 @@
 #include <android/hardware/audio/common/2.0/types.h>
 
 #include "utility/AssertOk.h"
+#include "utility/Documentation.h"
+#include "utility/EnvironmentTearDown.h"
 #include "utility/PrettyPrintAudioTypes.h"
 #include "utility/ReturnIn.h"
 
@@ -59,8 +59,7 @@ using ::android::hardware::audio::V2_0::IDevicesFactory;
 using ::android::hardware::audio::V2_0::IStream;
 using ::android::hardware::audio::V2_0::IStreamIn;
 using ::android::hardware::audio::V2_0::TimeSpec;
-using ReadParameters =
-    ::android::hardware::audio::V2_0::IStreamIn::ReadParameters;
+using ReadParameters = ::android::hardware::audio::V2_0::IStreamIn::ReadParameters;
 using ReadStatus = ::android::hardware::audio::V2_0::IStreamIn::ReadStatus;
 using ::android::hardware::audio::V2_0::IStreamOut;
 using ::android::hardware::audio::V2_0::IStreamOutCallback;
@@ -81,61 +80,8 @@ using ::android::hardware::audio::common::V2_0::AudioOutputFlag;
 using ::android::hardware::audio::common::V2_0::AudioSource;
 using ::android::hardware::audio::common::V2_0::ThreadInfo;
 
-using utility::returnIn;
+using namespace ::android::hardware::audio::common::test::utility;
 
-const char* getTestName() {
-    return ::testing::UnitTest::GetInstance()->current_test_info()->name();
-}
-
-namespace doc {
-/** Document the current test case.
- * Eg: calling `doc::test("Dump the state of the hal")` in the "debugDump" test
- * will output:
- *   <testcase name="debugDump" status="run" time="6"
- *             classname="AudioPrimaryHidlTest"
-               description="Dump the state of the hal." />
- * see
- https://github.com/google/googletest/blob/master/googletest/docs/AdvancedGuide.md#logging-additional-information
- */
-void test(const std::string& testCaseDocumentation) {
-    ::testing::Test::RecordProperty("description", testCaseDocumentation);
-}
-
-/** Document why a test was not fully run. Usually due to an optional feature
- * not implemented. */
-void partialTest(const std::string& reason) {
-    LOG(INFO) << "Test " << getTestName() << " partially run: " << reason;
-    ::testing::Test::RecordProperty("partialyRunTest", reason);
-}
-
-/** Add a note to the test. */
-void note(const std::string& note) {
-    LOG(INFO) << "Test " << getTestName() << " noted: " << note;
-    ::testing::Test::RecordProperty("note", note);
-}
-}
-
-// Register callback for static object destruction
-// Avoid destroying static objects after main return.
-// Post main return destruction leads to incorrect gtest timing measurements as
-// well as harder
-// debuging if anything goes wrong during destruction.
-class Environment : public ::testing::Environment {
-   public:
-    using TearDownFunc = std::function<void()>;
-    void registerTearDown(TearDownFunc&& tearDown) {
-        tearDowns.push_back(std::move(tearDown));
-    }
-
-   private:
-    void TearDown() override {
-        // Call the tear downs in reverse order of insertion
-        for (auto& tearDown : tearDowns) {
-            tearDown();
-        }
-    }
-    std::list<TearDownFunc> tearDowns;
-};
 // Instance to register global tearDown
 static Environment* environment;
 
@@ -1402,6 +1348,5 @@ int main(int argc, char** argv) {
     ::testing::AddGlobalTestEnvironment(environment);
     ::testing::InitGoogleTest(&argc, argv);
     int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
     return status;
 }
diff --git a/audio/Android.bp b/audio/Android.bp
index c3c2be1dbd..8046672abf 100644
--- a/audio/Android.bp
+++ b/audio/Android.bp
@@ -4,6 +4,7 @@ subdirs = [
     "2.0/vts/functional",
     "common/2.0",
     "common/2.0/default",
+    "common/test/utility",
     "effect/2.0",
     "effect/2.0/vts/functional",
 ]
diff --git a/audio/common/test/utility/Android.bp b/audio/common/test/utility/Android.bp
new file mode 100644
index 0000000000..cca56f6b6f
--- /dev/null
+++ b/audio/common/test/utility/Android.bp
@@ -0,0 +1,32 @@
+//
+// Copyright (C) 2017 The Android Open Source Project
+//
+// 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
+//
+//      http://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.
+//
+
+cc_library_shared {
+    name: "android.hardware.audio.common.test.utility",
+    defaults : ["hidl_defaults"],
+    srcs: ["src/ValidateXml.cpp"],
+    cflags: [
+        "-O0",
+        "-g",
+        "-Wextra",
+    ],
+    local_include_dirs: ["include/utility"],
+    export_include_dirs: ["include"],
+    shared_libs: ["libxml2", "liblog"],
+    static_libs: ["libgtest"],
+    export_static_lib_headers: ["libgtest"],
+}
+
diff --git a/audio/2.0/vts/functional/utility/AssertOk.h b/audio/common/test/utility/include/utility/AssertOk.h
similarity index 55%
rename from audio/2.0/vts/functional/utility/AssertOk.h
rename to audio/common/test/utility/include/utility/AssertOk.h
index 4c8440e18c..d8aa451005 100644
--- a/audio/2.0/vts/functional/utility/AssertOk.h
+++ b/audio/common/test/utility/include/utility/AssertOk.h
@@ -13,12 +13,21 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#ifndef ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ASSERTOK_H
+#define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ASSERTOK_H
 
 #include <algorithm>
 #include <vector>
 
 #include <hidl/Status.h>
 
+namespace android {
+namespace hardware {
+namespace audio {
+namespace common {
+namespace test {
+namespace utility {
+
 namespace detail {
 
 // This is a detail namespace, thus it is OK to import a class as nobody else is
@@ -27,81 +36,65 @@ using ::android::hardware::Return;
 using ::android::hardware::audio::V2_0::Result;
 
 template <class T>
-inline ::testing::AssertionResult assertIsOk(const char* expr,
-                                             const Return<T>& ret) {
+inline ::testing::AssertionResult assertIsOk(const char* expr, const Return<T>& ret) {
     return ::testing::AssertionResult(ret.isOk())
-           << "Expected: " << expr
-           << "\n to be an OK Return but it is not: " << ret.description();
+           << "Expected: " << expr << "\n to be an OK Return but it is not: " << ret.description();
 }
 
 // Call continuation if the provided result isOk
 template <class T, class Continuation>
-inline ::testing::AssertionResult continueIfIsOk(const char* expr,
-                                                 const Return<T>& ret,
+inline ::testing::AssertionResult continueIfIsOk(const char* expr, const Return<T>& ret,
                                                  Continuation continuation) {
     auto isOkStatus = assertIsOk(expr, ret);
     return !isOkStatus ? isOkStatus : continuation();
 }
 
 // Expect two equal Results
-inline ::testing::AssertionResult assertResult(const char* e_expr,
-                                               const char* r_expr,
+inline ::testing::AssertionResult assertResult(const char* e_expr, const char* r_expr,
                                                Result expected, Result result) {
     return ::testing::AssertionResult(expected == result)
-           << "Value of: " << r_expr
-           << "\n  Actual: " << ::testing::PrintToString(result)
-           << "\nExpected: " << e_expr
-           << "\nWhich is: " << ::testing::PrintToString(expected);
+           << "Value of: " << r_expr << "\n  Actual: " << ::testing::PrintToString(result)
+           << "\nExpected: " << e_expr << "\nWhich is: " << ::testing::PrintToString(expected);
 }
 
 // Expect two equal Results one being wrapped in an OK Return
-inline ::testing::AssertionResult assertResult(const char* e_expr,
-                                               const char* r_expr,
-                                               Result expected,
-                                               const Return<Result>& ret) {
-    return continueIfIsOk(r_expr, ret, [&] {
-        return assertResult(e_expr, r_expr, expected, Result{ret});
-    });
+inline ::testing::AssertionResult assertResult(const char* e_expr, const char* r_expr,
+                                               Result expected, const Return<Result>& ret) {
+    return continueIfIsOk(r_expr, ret,
+                          [&] { return assertResult(e_expr, r_expr, expected, Result{ret}); });
 }
 
 // Expect a Result to be part of a list of Results
-inline ::testing::AssertionResult assertResult(
-    const char* e_expr, const char* r_expr, const std::vector<Result>& expected,
-    Result result) {
+inline ::testing::AssertionResult assertResult(const char* e_expr, const char* r_expr,
+                                               const std::vector<Result>& expected, Result result) {
     if (std::find(expected.begin(), expected.end(), result) != expected.end()) {
         return ::testing::AssertionSuccess();  // result is in expected
     }
     return ::testing::AssertionFailure()
-           << "Value of: " << r_expr
-           << "\n  Actual: " << ::testing::PrintToString(result)
+           << "Value of: " << r_expr << "\n  Actual: " << ::testing::PrintToString(result)
            << "\nExpected one of: " << e_expr
            << "\n       Which is: " << ::testing::PrintToString(expected);
 }
 
 // Expect a Result wrapped in an OK Return to be part of a list of Results
-inline ::testing::AssertionResult assertResult(
-    const char* e_expr, const char* r_expr, const std::vector<Result>& expected,
-    const Return<Result>& ret) {
-    return continueIfIsOk(r_expr, ret, [&] {
-        return assertResult(e_expr, r_expr, expected, Result{ret});
-    });
+inline ::testing::AssertionResult assertResult(const char* e_expr, const char* r_expr,
+                                               const std::vector<Result>& expected,
+                                               const Return<Result>& ret) {
+    return continueIfIsOk(r_expr, ret,
+                          [&] { return assertResult(e_expr, r_expr, expected, Result{ret}); });
 }
 
-inline ::testing::AssertionResult assertOk(const char* expr,
-                                           const Return<void>& ret) {
+inline ::testing::AssertionResult assertOk(const char* expr, const Return<void>& ret) {
     return assertIsOk(expr, ret);
 }
 
 inline ::testing::AssertionResult assertOk(const char* expr, Result result) {
     return ::testing::AssertionResult(result == Result::OK)
-           << "Expected success: " << expr
-           << "\nActual: " << ::testing::PrintToString(result);
+           << "Expected success: " << expr << "\nActual: " << ::testing::PrintToString(result);
 }
 
-inline ::testing::AssertionResult assertOk(const char* expr,
-                                           const Return<Result>& ret) {
-    return continueIfIsOk(expr, ret,
-                          [&] { return assertOk(expr, Result{ret}); });
+inline ::testing::AssertionResult assertOk(const char* expr, const Return<Result>& ret) {
+    return continueIfIsOk(expr, ret, [&] { return assertOk(expr, Result{ret}); });
 }
 }
 
@@ -112,7 +105,14 @@ inline ::testing::AssertionResult assertOk(const char* expr,
 #define ASSERT_OK(ret) ASSERT_PRED_FORMAT1(detail::assertOk, ret)
 #define EXPECT_OK(ret) EXPECT_PRED_FORMAT1(detail::assertOk, ret)
 
-#define ASSERT_RESULT(expected, ret) \
-    ASSERT_PRED_FORMAT2(detail::assertResult, expected, ret)
-#define EXPECT_RESULT(expected, ret) \
-    EXPECT_PRED_FORMAT2(detail::assertResult, expected, ret)
+#define ASSERT_RESULT(expected, ret) ASSERT_PRED_FORMAT2(detail::assertResult, expected, ret)
+#define EXPECT_RESULT(expected, ret) EXPECT_PRED_FORMAT2(detail::assertResult, expected, ret)
+
+}  // utility
+}  // test
+}  // common
+}  // audio
+}  // test
+}  // utility
+
+#endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ASSERTOK_H
diff --git a/audio/common/test/utility/include/utility/Documentation.h b/audio/common/test/utility/include/utility/Documentation.h
new file mode 100644
index 0000000000..a45cad6aff
--- /dev/null
+++ b/audio/common/test/utility/include/utility/Documentation.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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
+ *
+ *      http://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 ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ENVIRONMENT_TEARDOWN
+#define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ENVIRONMENT_TEARDOWN
+
+#include <android-base/logging.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace common {
+namespace test {
+namespace utility {
+
+namespace doc {
+namespace detail {
+const char* getTestName() {
+    return ::testing::UnitTest::GetInstance()->current_test_info()->name();
+}
+}  // namespace detail
+
+/** Document the current test case.
+ * Eg: calling `doc::test("Dump the state of the hal")` in the "debugDump" test
+ * will output:
+ *   <testcase name="debugDump" status="run" time="6"
+ *             classname="AudioPrimaryHidlTest"
+               description="Dump the state of the hal." />
+ * see
+ https://github.com/google/googletest/blob/master/googletest/docs/AdvancedGuide.md#logging-additional-information
+ */
+void test(const std::string& testCaseDocumentation) {
+    ::testing::Test::RecordProperty("description", testCaseDocumentation);
+}
+
+/** Document why a test was not fully run. Usually due to an optional feature
+ * not implemented. */
+void partialTest(const std::string& reason) {
+    LOG(INFO) << "Test " << detail::getTestName() << " partially run: " << reason;
+    ::testing::Test::RecordProperty("partialyRunTest", reason);
+}
+
+/** Add a note to the test. */
+void note(const std::string& note) {
+    LOG(INFO) << "Test " << detail::getTestName() << " noted: " << note;
+    ::testing::Test::RecordProperty("note", note);
+}
+}  // namespace doc
+
+}  // utility
+}  // test
+}  // common
+}  // audio
+}  // test
+}  // utility
+
+#endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ENVIRONMENT_TEARDOWN
diff --git a/audio/common/test/utility/include/utility/EnvironmentTearDown.h b/audio/common/test/utility/include/utility/EnvironmentTearDown.h
new file mode 100644
index 0000000000..15b0bd81fc
--- /dev/null
+++ b/audio/common/test/utility/include/utility/EnvironmentTearDown.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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
+ *
+ *      http://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 ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ENVIRONMENT_TEARDOWN_H
+#define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ENVIRONMENT_TEARDOWN_H
+
+#include <functional>
+#include <list>
+
+#include <gtest/gtest.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace common {
+namespace test {
+namespace utility {
+
+/** Register callback for static object destruction
+ * Avoid destroying static objects after main return.
+ * Post main return destruction leads to incorrect gtest timing measurements as
+ * well as harder debuging if anything goes wrong during destruction. */
+class Environment : public ::testing::Environment {
+   public:
+    using TearDownFunc = std::function<void()>;
+    void registerTearDown(TearDownFunc&& tearDown) { tearDowns.push_back(std::move(tearDown)); }
+
+   private:
+    void TearDown() override {
+        // Call the tear downs in reverse order of insertion
+        for (auto& tearDown : tearDowns) {
+            tearDown();
+        }
+    }
+    std::list<TearDownFunc> tearDowns;
+};
+
+}  // utility
+}  // test
+}  // common
+}  // audio
+}  // test
+}  // utility
+
+#endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ENVIRONMENT_TEARDOWN_H
diff --git a/audio/2.0/vts/functional/utility/PrettyPrintAudioTypes.h b/audio/common/test/utility/include/utility/PrettyPrintAudioTypes.h
similarity index 65%
rename from audio/2.0/vts/functional/utility/PrettyPrintAudioTypes.h
rename to audio/common/test/utility/include/utility/PrettyPrintAudioTypes.h
index 025cd1c6a4..37059e748a 100644
--- a/audio/2.0/vts/functional/utility/PrettyPrintAudioTypes.h
+++ b/audio/common/test/utility/include/utility/PrettyPrintAudioTypes.h
@@ -13,11 +13,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+#ifndef ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
+#define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
+
+#include <iosfwd>
 #include <type_traits>
 
+#include <android/hardware/audio/2.0/types.h>
+#include <android/hardware/audio/common/2.0/types.h>
+
 /** @file Use HIDL generated toString methods to pretty print gtest errors */
 
-namespace detail {
+namespace prettyPrintAudioTypesDetail {
 
 // Print the value of an enum as hex
 template <class Enum>
@@ -25,7 +33,7 @@ inline void printUnderlyingValue(Enum value, ::std::ostream* os) {
     *os << std::hex << " (0x" << static_cast<std::underlying_type_t<Enum>>(value) << ")";
 }
 
-} // namespace detail
+}  // namespace detail
 
 namespace android {
 namespace hardware {
@@ -34,10 +42,10 @@ namespace V2_0 {
 
 inline void PrintTo(const Result& result, ::std::ostream* os) {
     *os << toString(result);
-    detail::printUnderlyingValue(result, os);
+    prettyPrintAudioTypesDetail::printUnderlyingValue(result, os);
 }
 
-} // namespace V2_0
+}  // namespace V2_0
 namespace common {
 namespace V2_0 {
 
@@ -47,16 +55,18 @@ inline void PrintTo(const AudioConfig& config, ::std::ostream* os) {
 
 inline void PrintTo(const AudioDevice& device, ::std::ostream* os) {
     *os << toString(device);
-    detail::printUnderlyingValue(device, os);
+    prettyPrintAudioTypesDetail::printUnderlyingValue(device, os);
 }
 
 inline void PrintTo(const AudioChannelMask& channelMask, ::std::ostream* os) {
     *os << toString(channelMask);
-    detail::printUnderlyingValue(channelMask, os);
+    prettyPrintAudioTypesDetail::printUnderlyingValue(channelMask, os);
 }
 
-} // namespace V2_0
-} // namespace common
-} // namespace audio
-} // namespace hardware
-} // namespace android
+}  // namespace V2_0
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
diff --git a/audio/2.0/vts/functional/utility/ReturnIn.h b/audio/common/test/utility/include/utility/ReturnIn.h
similarity index 75%
rename from audio/2.0/vts/functional/utility/ReturnIn.h
rename to audio/common/test/utility/include/utility/ReturnIn.h
index bb2389a2fc..08d502f2d4 100644
--- a/audio/2.0/vts/functional/utility/ReturnIn.h
+++ b/audio/common/test/utility/include/utility/ReturnIn.h
@@ -14,29 +14,37 @@
  * limitations under the License.
  */
 
+#ifndef ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_RETURN_IN_H
+#define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_RETURN_IN_H
+
 #include <tuple>
 
+namespace android {
+namespace hardware {
+namespace audio {
+namespace common {
+namespace test {
 namespace utility {
 
 namespace detail {
 // Helper class to generate the HIDL synchronous callback
 template <class... ResultStore>
 class ReturnIn {
- public:
+   public:
     // Provide to the constructor the variables where the output parameters must be copied
     // TODO: take pointers to match google output parameter style ?
     ReturnIn(ResultStore&... ts) : results(ts...) {}
     // Synchronous callback
     template <class... Results>
-    void operator() (Results&&...results) {
+    void operator()(Results&&... results) {
         set(std::forward<Results>(results)...);
     }
- private:
+
+   private:
     // Recursively set all output parameters
     template <class Head, class... Tail>
     void set(Head&& head, Tail&&... tail) {
-        std::get<sizeof...(ResultStore) - sizeof...(Tail) - 1>(results)
-                  = std::forward<Head>(head);
+        std::get<sizeof...(ResultStore) - sizeof...(Tail) - 1>(results) = std::forward<Head>(head);
         set(tail...);
     }
     // Trivial case
@@ -45,7 +53,7 @@ class ReturnIn {
     // All variables to set are stored here
     std::tuple<ResultStore&...> results;
 };
-} // namespace detail
+}  // namespace detail
 
 // Generate the HIDL synchronous callback with a copy policy
 // Input: the variables (lvalue reference) where to save the return values
@@ -53,6 +61,15 @@ class ReturnIn {
 // The output parameters *will be copied* do not use this function if you have
 // a zero copy policy
 template <class... ResultStore>
-detail::ReturnIn<ResultStore...> returnIn(ResultStore&... ts) { return {ts...};}
-
+detail::ReturnIn<ResultStore...> returnIn(ResultStore&... ts) {
+    return {ts...};
 }
+
+}  // utility
+}  // test
+}  // common
+}  // audio
+}  // test
+}  // utility
+
+#endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_RETURN_IN_H
diff --git a/audio/2.0/vts/functional/utility/ValidateXml.h b/audio/common/test/utility/include/utility/ValidateXml.h
similarity index 68%
rename from audio/2.0/vts/functional/utility/ValidateXml.h
rename to audio/common/test/utility/include/utility/ValidateXml.h
index edb09bf313..fdfa50666e 100644
--- a/audio/2.0/vts/functional/utility/ValidateXml.h
+++ b/audio/common/test/utility/include/utility/ValidateXml.h
@@ -14,15 +14,17 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_AUDIO_TEST_VALIDATEXML
-#define ANDROID_HARDWARE_AUDIO_TEST_VALIDATEXML
+#ifndef ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_VALIDATE_XML_H
+#define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_VALIDATE_XML_H
 
 #include <gtest/gtest.h>
 
 namespace android {
 namespace hardware {
 namespace audio {
+namespace common {
 namespace test {
+namespace utility {
 
 /** Validate the provided XmlFile with the provided xsdFile.
  * Intended to use with ASSERT_PRED_FORMAT2 as such:
@@ -33,12 +35,15 @@ namespace test {
                                        const char* xmlFilePath, const char* xsdPathName);
 
 /** Helper gtest ASSERT to test xml validity against an xsd. */
-#define ASSERT_VALID_XML(xmlFilePath, xsdFilePath) \
-    ASSERT_PRED_FORMAT2(::android::hardware::audio::test::validateXml, xmlFilePath, xsdFilePath)
+#define ASSERT_VALID_XML(xmlFilePath, xsdFilePath)                                      \
+    ASSERT_PRED_FORMAT2(::android::hardware::audio::common::test::utility::validateXml, \
+                        xmlFilePath, xsdFilePath)
 
-}  // namespace test
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+}  // utility
+}  // test
+}  // common
+}  // audio
+}  // test
+}  // utility
 
-#endif  // ANDROID_HARDWARE_AUDIO_TEST_VALIDATEXML
+#endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_VALIDATE_XML_H
diff --git a/audio/2.0/vts/functional/utility/ValidateXml.cpp b/audio/common/test/utility/src/ValidateXml.cpp
similarity index 97%
rename from audio/2.0/vts/functional/utility/ValidateXml.cpp
rename to audio/common/test/utility/src/ValidateXml.cpp
index 2fb828e307..784f9401ec 100644
--- a/audio/2.0/vts/functional/utility/ValidateXml.cpp
+++ b/audio/common/test/utility/src/ValidateXml.cpp
@@ -30,7 +30,9 @@
 namespace android {
 namespace hardware {
 namespace audio {
+namespace common {
 namespace test {
+namespace utility {
 
 /** Map libxml2 structures to their corresponding deleters. */
 template <class T>
@@ -125,7 +127,9 @@ struct Libxml2Global {
     return ::testing::AssertionSuccess();
 }
 
-}  // namespace test
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+}  // utility
+}  // test
+}  // common
+}  // audio
+}  // test
+}  // utility