diff --git a/tests/UpdatableSystemFontTest/Android.bp b/tests/UpdatableSystemFontTest/Android.bp
index ea5a431..76f7967 100644
--- a/tests/UpdatableSystemFontTest/Android.bp
+++ b/tests/UpdatableSystemFontTest/Android.bp
@@ -36,15 +36,19 @@
         "vts",
     ],
     data: [
-        ":NotoColorEmojiTtf",
+        ":NotoColorEmoji.ttf",
+        ":NotoSerif-Regular.ttf",
+        ":NotoSerif-Bold.ttf",
         ":UpdatableSystemFontTestCertDer",
-        ":UpdatableSystemFontTestNotoColorEmojiTtfFsvSig",
-        ":UpdatableSystemFontTestNotoColorEmojiV0Ttf",
-        ":UpdatableSystemFontTestNotoColorEmojiV0TtfFsvSig",
-        ":UpdatableSystemFontTestNotoColorEmojiVPlus1Ttf",
-        ":UpdatableSystemFontTestNotoColorEmojiVPlus1TtfFsvSig",
-        ":UpdatableSystemFontTestNotoColorEmojiVPlus2Ttf",
-        ":UpdatableSystemFontTestNotoColorEmojiVPlus2TtfFsvSig",
+        ":UpdatableSystemFontTest_NotoColorEmoji.sig",
+        ":UpdatableSystemFontTest_NotoColorEmojiV0.ttf",
+        ":UpdatableSystemFontTest_NotoColorEmojiV0.sig",
+        ":UpdatableSystemFontTest_NotoColorEmojiVPlus1.ttf",
+        ":UpdatableSystemFontTest_NotoColorEmojiVPlus1.sig",
+        ":UpdatableSystemFontTest_NotoColorEmojiVPlus2.ttf",
+        ":UpdatableSystemFontTest_NotoColorEmojiVPlus2.sig",
+        ":UpdatableSystemFontTest_NotoSerif-Regular.sig",
+        ":UpdatableSystemFontTest_NotoSerif-Bold.sig",
     ],
     sdk_version: "test_current",
 }
diff --git a/tests/UpdatableSystemFontTest/AndroidTest.xml b/tests/UpdatableSystemFontTest/AndroidTest.xml
index 4f6487e..6effa7b 100644
--- a/tests/UpdatableSystemFontTest/AndroidTest.xml
+++ b/tests/UpdatableSystemFontTest/AndroidTest.xml
@@ -29,13 +29,17 @@
         <option name="cleanup" value="true" />
         <option name="push" value="UpdatableSystemFontTestCert.der->/data/local/tmp/UpdatableSystemFontTestCert.der" />
         <option name="push" value="NotoColorEmoji.ttf->/data/local/tmp/NotoColorEmoji.ttf" />
-        <option name="push" value="UpdatableSystemFontTestNotoColorEmoji.ttf.fsv_sig->/data/local/tmp/UpdatableSystemFontTestNotoColorEmoji.ttf.fsv_sig" />
-        <option name="push" value="UpdatableSystemFontTestNotoColorEmojiV0.ttf->/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiV0.ttf" />
-        <option name="push" value="UpdatableSystemFontTestNotoColorEmojiV0.ttf.fsv_sig->/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiV0.ttf.fsv_sig" />
-        <option name="push" value="UpdatableSystemFontTestNotoColorEmojiVPlus1.ttf->/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiVPlus1.ttf" />
-        <option name="push" value="UpdatableSystemFontTestNotoColorEmojiVPlus1.ttf.fsv_sig->/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiVPlus1.ttf.fsv_sig" />
-        <option name="push" value="UpdatableSystemFontTestNotoColorEmojiVPlus2.ttf->/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiVPlus2.ttf" />
-        <option name="push" value="UpdatableSystemFontTestNotoColorEmojiVPlus2.ttf.fsv_sig->/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiVPlus2.ttf.fsv_sig" />
+        <option name="push" value="NotoSerif-Regular.ttf->/data/local/tmp/NotoSerif-Regular.ttf" />
+        <option name="push" value="NotoSerif-Bold.ttf->/data/local/tmp/NotoSerif-Bold.ttf" />
+        <option name="push" value="UpdatableSystemFontTest_NotoSerif-Regular.sig->/data/local/tmp/UpdatableSystemFontTest_NotoSerif-Regular.sig" />
+        <option name="push" value="UpdatableSystemFontTest_NotoSerif-Bold.sig->/data/local/tmp/UpdatableSystemFontTest_NotoSerif-Bold.sig" />
+        <option name="push" value="UpdatableSystemFontTest_NotoColorEmoji.sig->/data/local/tmp/UpdatableSystemFontTest_NotoColorEmoji.sig" />
+        <option name="push" value="UpdatableSystemFontTest_NotoColorEmojiV0.ttf->/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiV0.ttf" />
+        <option name="push" value="UpdatableSystemFontTest_NotoColorEmojiV0.sig->/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiV0.sig" />
+        <option name="push" value="UpdatableSystemFontTest_NotoColorEmojiVPlus1.ttf->/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiVPlus1.ttf" />
+        <option name="push" value="UpdatableSystemFontTest_NotoColorEmojiVPlus1.sig->/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiVPlus1.sig" />
+        <option name="push" value="UpdatableSystemFontTest_NotoColorEmojiVPlus2.ttf->/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiVPlus2.ttf" />
+        <option name="push" value="UpdatableSystemFontTest_NotoColorEmojiVPlus2.sig->/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiVPlus2.sig" />
     </target_preparer>
 
     <test class="com.android.tradefed.testtype.AndroidJUnitTest">
diff --git a/tests/UpdatableSystemFontTest/EmojiRenderingTestApp/src/com/android/emojirenderingtestapp/EmojiRenderingTestActivity.java b/tests/UpdatableSystemFontTest/EmojiRenderingTestApp/src/com/android/emojirenderingtestapp/EmojiRenderingTestActivity.java
index 947e9c2..a8c27fb0 100644
--- a/tests/UpdatableSystemFontTest/EmojiRenderingTestApp/src/com/android/emojirenderingtestapp/EmojiRenderingTestActivity.java
+++ b/tests/UpdatableSystemFontTest/EmojiRenderingTestApp/src/com/android/emojirenderingtestapp/EmojiRenderingTestActivity.java
@@ -20,6 +20,7 @@
 import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
 
 import android.app.Activity;
+import android.graphics.Typeface;
 import android.os.Bundle;
 import android.widget.LinearLayout;
 import android.widget.TextView;
@@ -27,14 +28,20 @@
 /** Test app to render an emoji. */
 public class EmojiRenderingTestActivity extends Activity {
 
+    private static final String TEST_NOTO_SERIF = "test-noto-serif";
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         LinearLayout container = new LinearLayout(this);
         container.setOrientation(LinearLayout.VERTICAL);
-        TextView textView = new TextView(this);
-        textView.setText("\uD83E\uDD72"); // 🥲
-        container.addView(textView, new LinearLayout.LayoutParams(MATCH_PARENT, WRAP_CONTENT));
+        TextView emojiTextView = new TextView(this);
+        emojiTextView.setText("\uD83E\uDD72"); // 🥲
+        container.addView(emojiTextView, new LinearLayout.LayoutParams(MATCH_PARENT, WRAP_CONTENT));
+        TextView serifTextView = new TextView(this);
+        serifTextView.setTypeface(Typeface.create(TEST_NOTO_SERIF, Typeface.NORMAL));
+        serifTextView.setText(TEST_NOTO_SERIF);
+        container.addView(serifTextView, new LinearLayout.LayoutParams(MATCH_PARENT, WRAP_CONTENT));
         setContentView(container);
     }
 }
diff --git a/tests/UpdatableSystemFontTest/src/com/android/updatablesystemfont/UpdatableSystemFontTest.java b/tests/UpdatableSystemFontTest/src/com/android/updatablesystemfont/UpdatableSystemFontTest.java
index 80b0dfe..108063e 100644
--- a/tests/UpdatableSystemFontTest/src/com/android/updatablesystemfont/UpdatableSystemFontTest.java
+++ b/tests/UpdatableSystemFontTest/src/com/android/updatablesystemfont/UpdatableSystemFontTest.java
@@ -16,6 +16,9 @@
 
 package com.android.updatablesystemfont;
 
+import static android.graphics.fonts.FontStyle.FONT_SLANT_UPRIGHT;
+import static android.graphics.fonts.FontStyle.FONT_WEIGHT_BOLD;
+import static android.graphics.fonts.FontStyle.FONT_WEIGHT_NORMAL;
 import static android.os.ParcelFileDescriptor.MODE_READ_ONLY;
 
 import static com.google.common.truth.Truth.assertThat;
@@ -30,6 +33,7 @@
 import android.graphics.fonts.FontFamilyUpdateRequest;
 import android.graphics.fonts.FontFileUpdateRequest;
 import android.graphics.fonts.FontManager;
+import android.graphics.fonts.FontStyle;
 import android.os.ParcelFileDescriptor;
 import android.platform.test.annotations.RootPermissionTest;
 import android.security.FileIntegrityManager;
@@ -74,31 +78,45 @@
     private static final String SYSTEM_FONTS_DIR = "/system/fonts/";
     private static final String DATA_FONTS_DIR = "/data/fonts/files/";
     private static final String CERT_PATH = "/data/local/tmp/UpdatableSystemFontTestCert.der";
-    private static final String NOTO_COLOR_EMOJI_POSTSCRIPT_NAME = "NotoColorEmoji";
 
-    private static final String ORIGINAL_NOTO_COLOR_EMOJI_TTF =
+    private static final String NOTO_COLOR_EMOJI_POSTSCRIPT_NAME = "NotoColorEmoji";
+    private static final String NOTO_COLOR_EMOJI_TTF =
             "/data/local/tmp/NotoColorEmoji.ttf";
-    private static final String ORIGINAL_NOTO_COLOR_EMOJI_TTF_FSV_SIG =
-            "/data/local/tmp/UpdatableSystemFontTestNotoColorEmoji.ttf.fsv_sig";
+    private static final String NOTO_COLOR_EMOJI_SIG =
+            "/data/local/tmp/UpdatableSystemFontTest_NotoColorEmoji.sig";
     // A font with revision == 0.
     private static final String TEST_NOTO_COLOR_EMOJI_V0_TTF =
-            "/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiV0.ttf";
-    private static final String TEST_NOTO_COLOR_EMOJI_V0_TTF_FSV_SIG =
-            "/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiV0.ttf.fsv_sig";
+            "/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiV0.ttf";
+    private static final String TEST_NOTO_COLOR_EMOJI_V0_SIG =
+            "/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiV0.sig";
     // A font with revision == original + 1
     private static final String TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF =
-            "/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiVPlus1.ttf";
-    private static final String TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG =
-            "/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiVPlus1.ttf.fsv_sig";
+            "/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiVPlus1.ttf";
+    private static final String TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG =
+            "/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiVPlus1.sig";
     // A font with revision == original + 2
     private static final String TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF =
-            "/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiVPlus2.ttf";
-    private static final String TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF_FSV_SIG =
-            "/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiVPlus2.ttf.fsv_sig";
+            "/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiVPlus2.ttf";
+    private static final String TEST_NOTO_COLOR_EMOJI_VPLUS2_SIG =
+            "/data/local/tmp/UpdatableSystemFontTest_NotoColorEmojiVPlus2.sig";
+
+    private static final String NOTO_SERIF_REGULAR_POSTSCRIPT_NAME = "NotoSerif";
+    private static final String NOTO_SERIF_REGULAR_TTF =
+            "/data/local/tmp/NotoSerif-Regular.ttf";
+    private static final String NOTO_SERIF_REGULAR_SIG =
+            "/data/local/tmp/UpdatableSystemFontTest_NotoSerif-Regular.sig";
+
+    private static final String NOTO_SERIF_BOLD_POSTSCRIPT_NAME = "NotoSerif-Bold";
+    private static final String NOTO_SERIF_BOLD_TTF =
+            "/data/local/tmp/NotoSerif-Bold.ttf";
+    private static final String NOTO_SERIF_BOLD_SIG =
+            "/data/local/tmp/UpdatableSystemFontTest_NotoSerif-Bold.sig";
 
     private static final String EMOJI_RENDERING_TEST_APP_ID = "com.android.emojirenderingtestapp";
     private static final String EMOJI_RENDERING_TEST_ACTIVITY =
             EMOJI_RENDERING_TEST_APP_ID + "/.EmojiRenderingTestActivity";
+    // This should be the same as the one in EmojiRenderingTestActivity.
+    private static final String TEST_NOTO_SERIF = "test-noto-serif";
     private static final long ACTIVITY_TIMEOUT_MILLIS = SECONDS.toMillis(10);
 
     private static final Pattern PATTERN_FONT_FILES = Pattern.compile("\\.(ttf|otf|ttc|otc)$");
@@ -133,11 +151,20 @@
 
     @Test
     public void updateFont() throws Exception {
+        FontConfig oldFontConfig =
+                SystemUtil.callWithShellPermissionIdentity(mFontManager::getFontConfig);
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG))
                 .isEqualTo(FontManager.RESULT_SUCCESS);
+        // Check that font config is updated.
         String fontPath = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(fontPath).startsWith(DATA_FONTS_DIR);
+        FontConfig newFontConfig =
+                SystemUtil.callWithShellPermissionIdentity(mFontManager::getFontConfig);
+        assertThat(newFontConfig.getConfigVersion())
+                .isGreaterThan(oldFontConfig.getConfigVersion());
+        assertThat(newFontConfig.getLastModifiedTimeMillis())
+                .isGreaterThan(oldFontConfig.getLastModifiedTimeMillis());
         // The updated font should be readable and unmodifiable.
         expectCommandToSucceed("dd status=none if=" + fontPath + " of=/dev/null");
         expectCommandToFail("dd status=none if=" + CERT_PATH + " of=" + fontPath);
@@ -146,11 +173,11 @@
     @Test
     public void updateFont_twice() throws Exception {
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG))
                 .isEqualTo(FontManager.RESULT_SUCCESS);
         String fontPath = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS2_SIG))
                 .isEqualTo(FontManager.RESULT_SUCCESS);
         String fontPath2 = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(fontPath2).startsWith(DATA_FONTS_DIR);
@@ -165,16 +192,16 @@
     public void updateFont_allowSameVersion() throws Exception {
         // Update original font to the same version
         assertThat(updateFontFile(
-                ORIGINAL_NOTO_COLOR_EMOJI_TTF, ORIGINAL_NOTO_COLOR_EMOJI_TTF_FSV_SIG))
+                NOTO_COLOR_EMOJI_TTF, NOTO_COLOR_EMOJI_SIG))
                 .isEqualTo(FontManager.RESULT_SUCCESS);
         String fontPath = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG))
                 .isEqualTo(FontManager.RESULT_SUCCESS);
         String fontPath2 = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         // Update updated font to the same version
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG))
                 .isEqualTo(FontManager.RESULT_SUCCESS);
         String fontPath3 = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(fontPath).startsWith(DATA_FONTS_DIR);
@@ -187,28 +214,58 @@
     @Test
     public void updateFont_invalidCert() throws Exception {
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS2_SIG))
                 .isEqualTo(FontManager.RESULT_ERROR_VERIFICATION_FAILURE);
     }
 
     @Test
     public void updateFont_downgradeFromSystem() throws Exception {
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_V0_TTF, TEST_NOTO_COLOR_EMOJI_V0_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_V0_TTF, TEST_NOTO_COLOR_EMOJI_V0_SIG))
                 .isEqualTo(FontManager.RESULT_ERROR_DOWNGRADING);
     }
 
     @Test
     public void updateFont_downgradeFromData() throws Exception {
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS2_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS2_SIG))
                 .isEqualTo(FontManager.RESULT_SUCCESS);
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG))
                 .isEqualTo(FontManager.RESULT_ERROR_DOWNGRADING);
     }
 
     @Test
+    public void updateFontFamily() throws Exception {
+        assertThat(updateNotoSerifAs("serif")).isEqualTo(FontManager.RESULT_SUCCESS);
+        FontConfig.FontFamily family = findFontFamilyOrThrow("serif");
+        assertThat(family.getFontList()).hasSize(2);
+        assertThat(family.getFontList().get(0).getPostScriptName())
+                .isEqualTo(NOTO_SERIF_REGULAR_POSTSCRIPT_NAME);
+        assertThat(family.getFontList().get(0).getFile().getAbsolutePath())
+                .startsWith(DATA_FONTS_DIR);
+        assertThat(family.getFontList().get(0).getStyle().getWeight())
+                .isEqualTo(FONT_WEIGHT_NORMAL);
+        assertThat(family.getFontList().get(1).getPostScriptName())
+                .isEqualTo(NOTO_SERIF_BOLD_POSTSCRIPT_NAME);
+        assertThat(family.getFontList().get(1).getFile().getAbsolutePath())
+                .startsWith(DATA_FONTS_DIR);
+        assertThat(family.getFontList().get(1).getStyle().getWeight()).isEqualTo(FONT_WEIGHT_BOLD);
+    }
+
+    @Test
+    public void updateFontFamily_asNewFont() throws Exception {
+        assertThat(updateNotoSerifAs("UpdatableSystemFontTest-serif"))
+                .isEqualTo(FontManager.RESULT_SUCCESS);
+        FontConfig.FontFamily family = findFontFamilyOrThrow("UpdatableSystemFontTest-serif");
+        assertThat(family.getFontList()).hasSize(2);
+        assertThat(family.getFontList().get(0).getPostScriptName())
+                .isEqualTo(NOTO_SERIF_REGULAR_POSTSCRIPT_NAME);
+        assertThat(family.getFontList().get(1).getPostScriptName())
+                .isEqualTo(NOTO_SERIF_BOLD_POSTSCRIPT_NAME);
+    }
+
+    @Test
     public void launchApp() throws Exception {
         String fontPath = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(fontPath).startsWith(SYSTEM_FONTS_DIR);
@@ -223,22 +280,25 @@
         String originalFontPath = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(originalFontPath).startsWith(SYSTEM_FONTS_DIR);
         assertThat(updateFontFile(
-                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG))
+                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG))
                 .isEqualTo(FontManager.RESULT_SUCCESS);
         String updatedFontPath = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(updatedFontPath).startsWith(DATA_FONTS_DIR);
+        updateNotoSerifAs(TEST_NOTO_SERIF);
+        String notoSerifPath = getFontPath(NOTO_SERIF_REGULAR_POSTSCRIPT_NAME);
         startActivity(EMOJI_RENDERING_TEST_APP_ID, EMOJI_RENDERING_TEST_ACTIVITY);
         // The original font should NOT be opened by the app.
         SystemUtil.eventually(() -> {
             assertThat(isFileOpenedBy(updatedFontPath, EMOJI_RENDERING_TEST_APP_ID)).isTrue();
             assertThat(isFileOpenedBy(originalFontPath, EMOJI_RENDERING_TEST_APP_ID)).isFalse();
+            assertThat(isFileOpenedBy(notoSerifPath, EMOJI_RENDERING_TEST_APP_ID)).isTrue();
         }, ACTIVITY_TIMEOUT_MILLIS);
     }
 
     @Test
     public void reboot() throws Exception {
         expectCommandToSucceed(String.format("cmd font update %s %s",
-                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG));
+                TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG));
         String fontPath = getFontPath(NOTO_COLOR_EMOJI_POSTSCRIPT_NAME);
         assertThat(fontPath).startsWith(DATA_FONTS_DIR);
 
@@ -256,7 +316,7 @@
                 Pattern.compile(Pattern.quote(TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF));
         for (int i = 0; i < 10; i++) {
             assertThat(updateFontFile(
-                    TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG))
+                    TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF, TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG))
                     .isEqualTo(FontManager.RESULT_SUCCESS);
             List<String> openFiles = getOpenFiles("system_server");
             for (Pattern p : Arrays.asList(PATTERN_FONT_FILES, PATTERN_SYSTEM_FONT_FILES,
@@ -277,7 +337,7 @@
     public void fdLeakTest_withoutPermission() throws Exception {
         Pattern patternEmojiVPlus1 =
                 Pattern.compile(Pattern.quote(TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF));
-        byte[] signature = Files.readAllBytes(Paths.get(TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF_FSV_SIG));
+        byte[] signature = Files.readAllBytes(Paths.get(TEST_NOTO_COLOR_EMOJI_VPLUS1_SIG));
         try (ParcelFileDescriptor fd = ParcelFileDescriptor.open(
                 new File(TEST_NOTO_COLOR_EMOJI_VPLUS1_TTF), MODE_READ_ONLY)) {
             assertThrows(SecurityException.class,
@@ -319,18 +379,56 @@
                 configVersion);
     }
 
+    private int updateNotoSerifAs(String familyName) throws IOException {
+        List<FontFamilyUpdateRequest.Font> fonts = Arrays.asList(
+                new FontFamilyUpdateRequest.Font.Builder(NOTO_SERIF_REGULAR_POSTSCRIPT_NAME,
+                        new FontStyle(FONT_WEIGHT_NORMAL, FONT_SLANT_UPRIGHT)).build(),
+                new FontFamilyUpdateRequest.Font.Builder(NOTO_SERIF_BOLD_POSTSCRIPT_NAME,
+                        new FontStyle(FONT_WEIGHT_BOLD, FONT_SLANT_UPRIGHT)).build());
+        FontFamilyUpdateRequest.FontFamily fontFamily =
+                new FontFamilyUpdateRequest.FontFamily.Builder(familyName, fonts).build();
+        byte[] regularSig = Files.readAllBytes(Paths.get(NOTO_SERIF_REGULAR_SIG));
+        byte[] boldSig = Files.readAllBytes(Paths.get(NOTO_SERIF_BOLD_SIG));
+        try (ParcelFileDescriptor regularFd = ParcelFileDescriptor.open(
+                    new File(NOTO_SERIF_REGULAR_TTF), MODE_READ_ONLY);
+             ParcelFileDescriptor boldFd = ParcelFileDescriptor.open(
+                    new File(NOTO_SERIF_BOLD_TTF), MODE_READ_ONLY)) {
+            return SystemUtil.runWithShellPermissionIdentity(() -> {
+                FontConfig fontConfig = mFontManager.getFontConfig();
+                return mFontManager.updateFontFamily(new FontFamilyUpdateRequest.Builder()
+                        .addFontFileUpdateRequest(
+                                new FontFileUpdateRequest(regularFd, regularSig))
+                        .addFontFileUpdateRequest(
+                                new FontFileUpdateRequest(boldFd, boldSig))
+                        .addFontFamily(fontFamily)
+                        .build(), fontConfig.getConfigVersion());
+            });
+        }
+    }
+
     private String getFontPath(String psName) {
-        return SystemUtil.runWithShellPermissionIdentity(() -> {
-            FontConfig fontConfig = mFontManager.getFontConfig();
-            for (FontConfig.FontFamily family : fontConfig.getFontFamilies()) {
-                for (FontConfig.Font font : family.getFontList()) {
-                    if (psName.equals(font.getPostScriptName())) {
-                        return font.getFile().getAbsolutePath();
-                    }
-                }
-            }
-            throw new AssertionError("Font not found: " + psName);
-        });
+        FontConfig fontConfig =
+                SystemUtil.runWithShellPermissionIdentity(mFontManager::getFontConfig);
+        return fontConfig.getFontFamilies().stream()
+                .flatMap(family -> family.getFontList().stream())
+                .filter(font -> psName.equals(font.getPostScriptName()))
+                // Return the last match, because the latter family takes precedence if two families
+                // have the same name.
+                .reduce((first, second) -> second)
+                .orElseThrow(() -> new AssertionError("Font not found: " + psName))
+                .getFile()
+                .getAbsolutePath();
+    }
+
+    private FontConfig.FontFamily findFontFamilyOrThrow(String familyName) {
+        FontConfig fontConfig =
+                SystemUtil.runWithShellPermissionIdentity(mFontManager::getFontConfig);
+        return fontConfig.getFontFamilies().stream()
+                .filter(family -> familyName.equals(family.getName()))
+                // Return the last match, because the latter family takes precedence if two families
+                // have the same name.
+                .reduce((first, second) -> second)
+                .orElseThrow(() -> new AssertionError("Family not found: " + familyName));
     }
 
     private static void startActivity(String appId, String activityId) throws Exception {
diff --git a/tests/UpdatableSystemFontTest/testdata/Android.bp b/tests/UpdatableSystemFontTest/testdata/Android.bp
index 0f01be0..1e6cb5e 100644
--- a/tests/UpdatableSystemFontTest/testdata/Android.bp
+++ b/tests/UpdatableSystemFontTest/testdata/Android.bp
@@ -41,9 +41,9 @@
 }
 
 genrule {
-    name: "UpdatableSystemFontTestNotoColorEmojiV0Ttf",
-    srcs: [":NotoColorEmojiTtf"],
-    out: ["UpdatableSystemFontTestNotoColorEmojiV0.ttf"],
+    name: "UpdatableSystemFontTest_NotoColorEmojiV0.ttf",
+    srcs: [":NotoColorEmoji.ttf"],
+    out: ["UpdatableSystemFontTest_NotoColorEmojiV0.ttf"],
     tools: ["update_font_metadata"],
     cmd: "$(location update_font_metadata) " +
         "--input=$(in) " +
@@ -52,9 +52,9 @@
 }
 
 genrule {
-    name: "UpdatableSystemFontTestNotoColorEmojiVPlus1Ttf",
-    srcs: [":NotoColorEmojiTtf"],
-    out: ["UpdatableSystemFontTestNotoColorEmojiVPlus1.ttf"],
+    name: "UpdatableSystemFontTest_NotoColorEmojiVPlus1.ttf",
+    srcs: [":NotoColorEmoji.ttf"],
+    out: ["UpdatableSystemFontTest_NotoColorEmojiVPlus1.ttf"],
     tools: ["update_font_metadata"],
     cmd: "$(location update_font_metadata) " +
         "--input=$(in) " +
@@ -63,9 +63,9 @@
 }
 
 genrule {
-    name: "UpdatableSystemFontTestNotoColorEmojiVPlus2Ttf",
-    srcs: [":NotoColorEmojiTtf"],
-    out: ["UpdatableSystemFontTestNotoColorEmojiVPlus2.ttf"],
+    name: "UpdatableSystemFontTest_NotoColorEmojiVPlus2.ttf",
+    srcs: [":NotoColorEmoji.ttf"],
+    out: ["UpdatableSystemFontTest_NotoColorEmojiVPlus2.ttf"],
     tools: ["update_font_metadata"],
     cmd: "$(location update_font_metadata) " +
         "--input=$(in) " +
@@ -87,29 +87,43 @@
 }
 
 genrule {
-    name: "UpdatableSystemFontTestNotoColorEmojiTtfFsvSig",
+    name: "UpdatableSystemFontTest_NotoColorEmoji.sig",
     defaults: ["updatable_system_font_sig_gen_default"],
-    srcs: [":NotoColorEmojiTtf"],
-    out: ["UpdatableSystemFontTestNotoColorEmoji.ttf.fsv_sig"],
+    srcs: [":NotoColorEmoji.ttf"],
+    out: ["UpdatableSystemFontTest_NotoColorEmoji.sig"],
 }
 
 genrule {
-    name: "UpdatableSystemFontTestNotoColorEmojiV0TtfFsvSig",
+    name: "UpdatableSystemFontTest_NotoColorEmojiV0.sig",
     defaults: ["updatable_system_font_sig_gen_default"],
-    srcs: [":UpdatableSystemFontTestNotoColorEmojiV0Ttf"],
-    out: ["UpdatableSystemFontTestNotoColorEmojiV0.ttf.fsv_sig"],
+    srcs: [":UpdatableSystemFontTest_NotoColorEmojiV0.ttf"],
+    out: ["UpdatableSystemFontTest_NotoColorEmojiV0.sig"],
 }
 
 genrule {
-    name: "UpdatableSystemFontTestNotoColorEmojiVPlus1TtfFsvSig",
+    name: "UpdatableSystemFontTest_NotoColorEmojiVPlus1.sig",
     defaults: ["updatable_system_font_sig_gen_default"],
-    srcs: [":UpdatableSystemFontTestNotoColorEmojiVPlus1Ttf"],
-    out: ["UpdatableSystemFontTestNotoColorEmojiVPlus1.ttf.fsv_sig"],
+    srcs: [":UpdatableSystemFontTest_NotoColorEmojiVPlus1.ttf"],
+    out: ["UpdatableSystemFontTest_NotoColorEmojiVPlus1.sig"],
 }
 
 genrule {
-    name: "UpdatableSystemFontTestNotoColorEmojiVPlus2TtfFsvSig",
+    name: "UpdatableSystemFontTest_NotoColorEmojiVPlus2.sig",
     defaults: ["updatable_system_font_sig_gen_default"],
-    srcs: [":UpdatableSystemFontTestNotoColorEmojiVPlus2Ttf"],
-    out: ["UpdatableSystemFontTestNotoColorEmojiVPlus2.ttf.fsv_sig"],
+    srcs: [":UpdatableSystemFontTest_NotoColorEmojiVPlus2.ttf"],
+    out: ["UpdatableSystemFontTest_NotoColorEmojiVPlus2.sig"],
+}
+
+genrule {
+    name: "UpdatableSystemFontTest_NotoSerif-Regular.sig",
+    defaults: ["updatable_system_font_sig_gen_default"],
+    srcs: [":NotoSerif-Regular.ttf"],
+    out: ["UpdatableSystemFontTest_NotoSerif-Regular.sig"],
+}
+
+genrule {
+    name: "UpdatableSystemFontTest_NotoSerif-Bold.sig",
+    defaults: ["updatable_system_font_sig_gen_default"],
+    srcs: [":NotoSerif-Bold.ttf"],
+    out: ["UpdatableSystemFontTest_NotoSerif-Bold.sig"],
 }