diff --git a/tests/unit/Android.bp b/tests/unit/Android.bp
index 5eb43f3..a7f57e8 100644
--- a/tests/unit/Android.bp
+++ b/tests/unit/Android.bp
@@ -45,21 +45,21 @@
     ],
 }
 
-android_test {
-    name: "FrameworksNetTests",
+android_library {
+    name: "FrameworksNetTestsLib",
+    min_sdk_version: "30",
     defaults: [
         "framework-connectivity-test-defaults",
-        "FrameworksNetTests-jni-defaults",
     ],
     srcs: [
         "java/**/*.java",
         "java/**/*.kt",
     ],
-    test_suites: ["device-tests"],
     jarjar_rules: "jarjar-rules.txt",
     static_libs: [
         "androidx.test.rules",
         "bouncycastle-repackaged-unbundled",
+        "core-tests-support",
         "FrameworksNetCommonTests",
         "frameworks-base-testutils",
         "frameworks-net-integration-testutils",
@@ -78,7 +78,21 @@
         "android.test.mock",
         "ServiceConnectivityResources",
     ],
+    visibility: ["//packages/modules/Connectivity/tests:__subpackages__"],
+}
+
+android_test {
+    name: "FrameworksNetTests",
+    min_sdk_version: "30",
+    defaults: [
+        "framework-connectivity-test-defaults",
+        "FrameworksNetTests-jni-defaults",
+    ],
+    test_suites: ["device-tests"],
+    static_libs: [
+        "FrameworksNetTestsLib",
+    ],
     jni_libs: [
         "libservice-connectivity",
-    ],
+    ]
 }
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsFactoryTest.java b/tests/unit/java/com/android/server/net/NetworkStatsFactoryTest.java
index 93599f3..40d4446 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsFactoryTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsFactoryTest.java
@@ -43,10 +43,10 @@
 import androidx.test.runner.AndroidJUnit4;
 
 import com.android.frameworks.tests.net.R;
-import com.android.internal.util.test.FsUtil;
 
 import libcore.io.IoUtils;
 import libcore.io.Streams;
+import libcore.testing.io.TestIoUtils;
 
 import org.junit.After;
 import org.junit.Before;
@@ -70,10 +70,7 @@
 
     @Before
     public void setUp() throws Exception {
-        mTestProc = new File(InstrumentationRegistry.getContext().getFilesDir(), "proc");
-        if (mTestProc.exists()) {
-            FsUtil.deleteContents(mTestProc);
-        }
+        mTestProc = TestIoUtils.createTemporaryDirectory("proc");
 
         // The libandroid_servers which have the native method is not available to
         // applications. So in order to have a test support native library, the native code
@@ -86,10 +83,6 @@
     @After
     public void tearDown() throws Exception {
         mFactory = null;
-
-        if (mTestProc.exists()) {
-            FsUtil.deleteContents(mTestProc);
-        }
     }
 
     @Test
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
index 3dd6598..ee94ae9 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -118,12 +118,13 @@
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.test.BroadcastInterceptingContext;
-import com.android.internal.util.test.FsUtil;
 import com.android.server.net.NetworkStatsService.NetworkStatsSettings;
 import com.android.server.net.NetworkStatsService.NetworkStatsSettings.Config;
 import com.android.testutils.HandlerUtils;
 import com.android.testutils.TestableNetworkStatsProviderBinder;
 
+import libcore.testing.io.TestIoUtils;
+
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Ignore;
@@ -238,10 +239,7 @@
         MockitoAnnotations.initMocks(this);
         final Context context = InstrumentationRegistry.getContext();
         mServiceContext = new MockContext(context);
-        mStatsDir = context.getFilesDir();
-        if (mStatsDir.exists()) {
-            FsUtil.deleteContents(mStatsDir);
-        }
+        mStatsDir = TestIoUtils.createTemporaryDirectory(getClass().getSimpleName());
 
         PowerManager powerManager = (PowerManager) mServiceContext.getSystemService(
                 Context.POWER_SERVICE);
@@ -310,8 +308,6 @@
 
     @After
     public void tearDown() throws Exception {
-        FsUtil.deleteContents(mStatsDir);
-
         mServiceContext = null;
         mStatsDir = null;