diff --git a/fs_mgr/liblp/builder_test.cpp b/fs_mgr/liblp/builder_test.cpp
index ecad7d4..dde6d07 100644
--- a/fs_mgr/liblp/builder_test.cpp
+++ b/fs_mgr/liblp/builder_test.cpp
@@ -19,29 +19,20 @@
 #include <liblp/builder.h>
 
 #include "liblp_test.h"
-#include "mock_property_fetcher.h"
 #include "utility.h"
 
 using namespace std;
 using namespace android::fs_mgr;
-using ::android::fs_mgr::MockPropertyFetcher;
+using namespace android::fs_mgr::testing;
 using ::testing::_;
 using ::testing::AnyNumber;
 using ::testing::ElementsAre;
 using ::testing::NiceMock;
 using ::testing::Return;
 
-void ResetPropertyFetcher() {
-    IPropertyFetcher::OverrideForTesting(std::make_unique<NiceMock<MockPropertyFetcher>>());
-}
-
-MockPropertyFetcher* GetMockedPropertyFetcher() {
-    return static_cast<MockPropertyFetcher*>(IPropertyFetcher::GetInstance());
-}
-
 class Environment : public ::testing::Environment {
   public:
-    void SetUp() override { ResetPropertyFetcher(); }
+    void SetUp() override { ResetMockPropertyFetcher(); }
 };
 
 int main(int argc, char** argv) {
diff --git a/fs_mgr/liblp/device_test.cpp b/fs_mgr/liblp/device_test.cpp
index b759fd1..382d53d 100644
--- a/fs_mgr/liblp/device_test.cpp
+++ b/fs_mgr/liblp/device_test.cpp
@@ -24,9 +24,9 @@
 #include <liblp/property_fetcher.h>
 
 #include "liblp_test.h"
-#include "mock_property_fetcher.h"
 
 using namespace android::fs_mgr;
+using namespace android::fs_mgr::testing;
 using ::testing::Return;
 
 // Compliance test on the actual device with dynamic partitions.
diff --git a/fs_mgr/liblp/mock_property_fetcher.h b/fs_mgr/liblp/include/liblp/mock_property_fetcher.h
similarity index 79%
rename from fs_mgr/liblp/mock_property_fetcher.h
rename to fs_mgr/liblp/include/liblp/mock_property_fetcher.h
index 4612c52..f15611b 100644
--- a/fs_mgr/liblp/mock_property_fetcher.h
+++ b/fs_mgr/liblp/include/liblp/mock_property_fetcher.h
@@ -22,6 +22,7 @@
 
 namespace android {
 namespace fs_mgr {
+namespace testing {
 
 class MockPropertyFetcher : public IPropertyFetcher {
   public:
@@ -41,8 +42,15 @@
     }
 };
 
+static inline void ResetMockPropertyFetcher() {
+    IPropertyFetcher::OverrideForTesting(
+            std::make_unique<::testing::NiceMock<MockPropertyFetcher>>());
+}
+
+static inline MockPropertyFetcher* GetMockedPropertyFetcher() {
+    return static_cast<MockPropertyFetcher*>(IPropertyFetcher::GetInstance());
+}
+
+}  // namespace testing
 }  // namespace fs_mgr
 }  // namespace android
-
-android::fs_mgr::MockPropertyFetcher* GetMockedPropertyFetcher();
-void ResetPropertyFetcher();
diff --git a/fs_mgr/liblp/io_test.cpp b/fs_mgr/liblp/io_test.cpp
index 4d00944..df89e9c 100644
--- a/fs_mgr/liblp/io_test.cpp
+++ b/fs_mgr/liblp/io_test.cpp
@@ -27,7 +27,6 @@
 
 #include "images.h"
 #include "liblp_test.h"
-#include "mock_property_fetcher.h"
 #include "reader.h"
 #include "test_partition_opener.h"
 #include "utility.h"
@@ -35,6 +34,7 @@
 
 using namespace std;
 using namespace android::fs_mgr;
+using namespace android::fs_mgr::testing;
 using ::testing::_;
 using ::testing::Return;
 using unique_fd = android::base::unique_fd;
diff --git a/fs_mgr/liblp/liblp_test.h b/fs_mgr/liblp/liblp_test.h
index 892f43d..c61aaa5 100644
--- a/fs_mgr/liblp/liblp_test.h
+++ b/fs_mgr/liblp/liblp_test.h
@@ -18,10 +18,18 @@
 
 #include <gtest/gtest.h>
 
-#include "mock_property_fetcher.h"
+#include <liblp/mock_property_fetcher.h>
+
+namespace android {
+namespace fs_mgr {
+namespace testing {
 
 class LiblpTest : public ::testing::Test {
   public:
-    void SetUp() override { ResetPropertyFetcher(); }
-    void TearDown() override { ResetPropertyFetcher(); }
+    void SetUp() override { ResetMockPropertyFetcher(); }
+    void TearDown() override { ResetMockPropertyFetcher(); }
 };
+
+}  // namespace testing
+}  // namespace fs_mgr
+}  // namespace android