Avoid IPCs to check for checking enrollment status of face and fp.

This was introduced in the previous change that stops face auth on
bouncer. This uses cached enrollment status for face and fp.

Bug: 242022358
Bug: 241631135
Test: atest KeyguardUpdateMonitorTest
Change-Id: Ic46266a89adc7a7548a164dee244ac5746ae8ffd
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java b/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
index 6bac7dc..6976e3e 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
@@ -2580,8 +2580,8 @@
     }
 
     private boolean isOnlyFaceEnrolled() {
-        return isFaceAuthEnabledForUser(getCurrentUser())
-                && !isUnlockWithFingerprintPossible(getCurrentUser());
+        return isFaceEnrolled()
+                && !getCachedIsUnlockWithFingerprintPossible(sCurrentUser);
     }
 
     private void maybeLogListenerModelData(KeyguardListenModel model) {
@@ -2696,7 +2696,9 @@
         return isUnlockWithFacePossible(userId) || isUnlockWithFingerprintPossible(userId);
     }
 
-    private boolean isUnlockWithFingerprintPossible(int userId) {
+    @VisibleForTesting
+    boolean isUnlockWithFingerprintPossible(int userId) {
+        // TODO (b/242022358), make this rely on onEnrollmentChanged event and update it only once.
         mIsUnlockWithFingerprintPossible.put(userId, mFpm != null && mFpm.isHardwareDetected()
                 && !isFingerprintDisabled(userId) && mFpm.hasEnrolledTemplates(userId));
         return mIsUnlockWithFingerprintPossible.get(userId);
@@ -2718,6 +2720,7 @@
      * If face hardware is available, user has enrolled and enabled auth via setting.
      */
     public boolean isFaceAuthEnabledForUser(int userId) {
+        // TODO (b/242022358), make this rely on onEnrollmentChanged event and update it only once.
         updateFaceEnrolled(userId);
         return mIsFaceEnrolled;
     }
diff --git a/packages/SystemUI/tests/src/com/android/keyguard/KeyguardUpdateMonitorTest.java b/packages/SystemUI/tests/src/com/android/keyguard/KeyguardUpdateMonitorTest.java
index c677371..c281965 100644
--- a/packages/SystemUI/tests/src/com/android/keyguard/KeyguardUpdateMonitorTest.java
+++ b/packages/SystemUI/tests/src/com/android/keyguard/KeyguardUpdateMonitorTest.java
@@ -581,6 +581,7 @@
     @Test
     public void testTriesToAuthenticate_whenBouncer() {
         fingerprintIsNotEnrolled();
+        faceAuthEnabled();
         setKeyguardBouncerVisibility(true);
 
         verify(mFaceManager).authenticate(any(), any(), any(), any(), anyInt(), anyBoolean());
@@ -1218,6 +1219,7 @@
     public void testShouldListenForFace_whenFaceIsAlreadyAuthenticated_returnsFalse()
             throws RemoteException {
         // Face auth should run when the following is true.
+        faceAuthEnabled();
         bouncerFullyVisibleAndNotGoingToSleep();
         fingerprintIsNotEnrolled();
         keyguardNotGoingAway();
@@ -1284,6 +1286,7 @@
     public void testShouldListenForFace_whenBiometricsDisabledForUser_returnsFalse()
             throws RemoteException {
         // Preconditions for face auth to run
+        faceAuthEnabled();
         keyguardNotGoingAway();
         bouncerFullyVisibleAndNotGoingToSleep();
         fingerprintIsNotEnrolled();
@@ -1307,6 +1310,7 @@
     public void testShouldListenForFace_whenUserCurrentlySwitching_returnsFalse()
             throws RemoteException {
         // Preconditions for face auth to run
+        faceAuthEnabled();
         keyguardNotGoingAway();
         bouncerFullyVisibleAndNotGoingToSleep();
         fingerprintIsNotEnrolled();
@@ -1329,6 +1333,7 @@
     public void testShouldListenForFace_whenSecureCameraLaunched_returnsFalse()
             throws RemoteException {
         // Preconditions for face auth to run
+        faceAuthEnabled();
         keyguardNotGoingAway();
         bouncerFullyVisibleAndNotGoingToSleep();
         fingerprintIsNotEnrolled();
@@ -1374,6 +1379,7 @@
     public void testShouldListenForFace_whenBouncerShowingAndDeviceIsAwake_returnsTrue()
             throws RemoteException {
         // Preconditions for face auth to run
+        faceAuthEnabled();
         keyguardNotGoingAway();
         currentUserIsPrimary();
         currentUserDoesNotHaveTrust();
@@ -1539,8 +1545,19 @@
         assertThat(mKeyguardUpdateMonitor.shouldListenForFingerprint(anyBoolean())).isEqualTo(true);
     }
 
+    private void faceAuthEnabled() {
+        // this ensures KeyguardUpdateMonitor updates the cached mIsFaceEnrolled flag using the
+        // face manager mock wire-up in setup()
+        mKeyguardUpdateMonitor.isFaceAuthEnabledForUser(mCurrentUserId);
+    }
+
     private void fingerprintIsNotEnrolled() {
         when(mFingerprintManager.hasEnrolledTemplates(mCurrentUserId)).thenReturn(false);
+        // This updates the cached fingerprint state.
+        // There is no straightforward API to update the fingerprint state.
+        // It currently works updates after enrollment changes because something else invokes
+        // startListeningForFingerprint(), which internally calls this method.
+        mKeyguardUpdateMonitor.isUnlockWithFingerprintPossible(mCurrentUserId);
     }
 
     private void statusBarShadeIsNotLocked() {