diff --git a/tests/unit/src/com/android/settings/network/telephony/TelephonyTogglePreferenceControllerTest.java b/tests/unit/src/com/android/settings/network/telephony/TelephonyTogglePreferenceControllerTest.java
new file mode 100644
index 00000000000..e80a76e8187
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+++ b/tests/unit/src/com/android/settings/network/telephony/TelephonyTogglePreferenceControllerTest.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package com.android.settings.network.telephony;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class TelephonyTogglePreferenceControllerTest {
+
+    private Context mContext;
+    private FakeTelephonyToggle mFakeTelephonyToggle;
+
+    @Before
+    public void setUp() {
+        mContext = ApplicationProvider.getApplicationContext();
+        mFakeTelephonyToggle = new FakeTelephonyToggle(mContext, "key");
+    }
+
+    @Test
+    public void isSliceable_byDefault_shouldReturnFalse() {
+        assertThat(mFakeTelephonyToggle.isSliceable()).isFalse();
+    }
+
+    private static class FakeTelephonyToggle extends TelephonyTogglePreferenceController {
+
+        private FakeTelephonyToggle(Context context, String preferenceKey) {
+            super(context, preferenceKey);
+        }
+
+        @Override
+        public boolean isChecked() {
+            return false;
+        }
+
+        @Override
+        public boolean setChecked(boolean isChecked) {
+            return false;
+        }
+
+        @Override
+        public int getAvailabilityStatus(int subId) {
+            return 0;
+        }
+    }
+}