diff --git a/packages/SettingsLib/tests/integ/Android.bp b/packages/SettingsLib/tests/integ/Android.bp
index 2ccff1e..f6f9dba 100644
--- a/packages/SettingsLib/tests/integ/Android.bp
+++ b/packages/SettingsLib/tests/integ/Android.bp
@@ -33,10 +33,12 @@
     test_suites: ["device-tests"],
 
     static_libs: [
+        "androidx.test.core",
         "androidx.test.rules",
         "androidx.test.espresso.core",
         "mockito-target-minus-junit4",
         "truth-prebuilt",
+        "SettingsLibUsageProgressBarPreference",
     ],
 
     dxflags: ["--multi-dex"],
diff --git a/packages/SettingsLib/tests/integ/src/com/android/settingslib/widget/UsageProgressBarPreferenceTest.java b/packages/SettingsLib/tests/integ/src/com/android/settingslib/widget/UsageProgressBarPreferenceTest.java
new file mode 100644
index 0000000..85e2174
--- /dev/null
+++ b/packages/SettingsLib/tests/integ/src/com/android/settingslib/widget/UsageProgressBarPreferenceTest.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2021 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.settingslib.widget;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.text.SpannedString;
+import android.text.style.RelativeSizeSpan;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.LinearLayout;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import androidx.preference.PreferenceViewHolder;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class UsageProgressBarPreferenceTest {
+
+    private UsageProgressBarPreference mUsageProgressBarPreference;
+    private PreferenceViewHolder mViewHolder;
+
+    @Before
+    public void setUp() {
+        final Context context = ApplicationProvider.getApplicationContext();
+        mUsageProgressBarPreference = new UsageProgressBarPreference(context);
+        final LayoutInflater inflater = LayoutInflater.from(context);
+        final View rootView = inflater.inflate(mUsageProgressBarPreference.getLayoutResource(),
+                new LinearLayout(context), false /* attachToRoot */);
+        mViewHolder = PreferenceViewHolder.createInstanceForTests(rootView);
+    }
+
+    @Test
+    public void setUsageSummary_noNumber_noRelativeSizeSpan() {
+        mUsageProgressBarPreference.setUsageSummary("test");
+
+        mUsageProgressBarPreference.onBindViewHolder(mViewHolder);
+
+        final TextView usageSummary = (TextView) mViewHolder.findViewById(R.id.usage_summary);
+        final SpannedString summary = new SpannedString(usageSummary.getText());
+        assertThat(summary.getSpans(0, summary.length(), RelativeSizeSpan.class).length)
+                .isEqualTo(0);
+    }
+
+    @Test
+    public void setUsageSummary_integerNumber_findRelativeSizeSpan() {
+        mUsageProgressBarPreference.setUsageSummary("10Test");
+
+        mUsageProgressBarPreference.onBindViewHolder(mViewHolder);
+
+        final TextView usageSummary = (TextView) mViewHolder.findViewById(R.id.usage_summary);
+        final SpannedString summary = new SpannedString(usageSummary.getText());
+        assertThat(summary.getSpans(0, summary.length(), RelativeSizeSpan.class).length)
+                .isEqualTo(1);
+    }
+
+    @Test
+    public void setUsageSummary_floatNumber_findRelativeSizeSpan() {
+        mUsageProgressBarPreference.setUsageSummary("3.14Test");
+
+        mUsageProgressBarPreference.onBindViewHolder(mViewHolder);
+
+        final TextView usageSummary = (TextView) mViewHolder.findViewById(R.id.usage_summary);
+        final SpannedString summary = new SpannedString(usageSummary.getText());
+        assertThat(summary.getSpans(0, summary.length(), RelativeSizeSpan.class).length)
+                .isEqualTo(1);
+    }
+
+    @Test
+    public void setPercent_getCorrectProgress() {
+        mUsageProgressBarPreference.setPercent(31, 80);
+
+        mUsageProgressBarPreference.onBindViewHolder(mViewHolder);
+
+        final ProgressBar progressBar = (ProgressBar) mViewHolder
+                .findViewById(android.R.id.progress);
+        assertThat(progressBar.getProgress()).isEqualTo((int) (31.0f / 80 * 100));
+    }
+}