Use case-insensitive match for action label.

The label can be as-is ("Test reply") or all-caps ("TEST REPLY")
depending on the system config.

Bug: 227712564
Bug: 227424350
Test: atest InputMethodStressTest
Change-Id: Id64793f572bec06c84a235fc7688870f44013723

tests/InputMethodStressTest/src/com/android/inputmethod/stresstest/NotificationTest.java

@@ -48,6 +48,7 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import java.util.concurrent.TimeUnit;
+import java.util.regex.Pattern;
 
 @RootPermissionTest
 @RunWith(AndroidJUnit4.class)
@@ -99,7 +100,9 @@ public final class NotificationTest {
     public void testDirectReply() {
         postMessagingNotification();
         mUiDevice.openNotification();
-        mUiDevice.wait(Until.findObject(By.text(REPLY_ACTION_LABEL)), TIMEOUT).click();
+        // The text can be shown as-is, or all-caps, depending on the system.
+        Pattern actionLabelPattern = Pattern.compile(REPLY_ACTION_LABEL, Pattern.CASE_INSENSITIVE);
+        mUiDevice.wait(Until.findObject(By.text(actionLabelPattern)), TIMEOUT).click();
         // Verify that IME is visible.
         assertThat(mUiDevice.wait(Until.findObject(By.pkg(getImePackage(mContext))), TIMEOUT))
                 .isNotNull();