Revert "Fix failing unit tests (#352)"

This reverts commit d66cafc.

android/src/main/java/com/oblador/keychain/DeviceAvailability.java

@@ -5,14 +5,11 @@
 import android.app.KeyguardManager;
 import android.content.Context;
 import android.content.pm.PackageManager;
-import android.hardware.fingerprint.FingerprintManager;
 import android.os.Build;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.RequiresApi;
 import androidx.biometric.BiometricManager;
 
-import static android.content.Context.FINGERPRINT_SERVICE;
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static androidx.biometric.BiometricManager.BIOMETRIC_SUCCESS;
 
@@ -26,45 +23,13 @@ public static boolean isBiometricAuthAvailable(@NonNull final Context context) {
   }
 
   public static boolean isFingerprintAuthAvailable(@NonNull final Context context) {
-    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
-      return false;
-    } else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.M) {
-      // -----------------------------------------------------------------------------------------------
-      // WARNING: hasSystemFeature(PackageManager.FEATURE_FINGERPRINT) cannot be reliably used on API23.
-      // -----------------------------------------------------------------------------------------------
-      return isFingerprintHardwareDetected_Api23_Workaround(context);
-    } else {
-      return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_FINGERPRINT);
-    }
-  }
-
-  /**
-   * On API23, hasSystemFeature(PackageManager.FEATURE_FINGERPRINT) will return false on *some* devices,
-   * even though the fingerprint HW is present and usable.
-   *
-   * This Google Issue Tracker ticket https://issuetracker.google.com/issues/124066957 reported that this check was
-   * problematic and they had to remove it in the support lib:
-   *
-   *   | mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_FINGERPRINT) which can return false,
-   *   | even if scanner exists and fingerprint is configured, and FingerprintManager can be used for authentication. ...
-   *   | We need to update FingerprintManagerCompat which also checks PackageManager.
-   *   | The flag exists on API23, but OEMs were not setting it properly. I believe we started enforcing this after 23.
-   *
-   * @deprecated TODO Remove this method once API23 support is phased out.
-   */
-  @RequiresApi(Build.VERSION_CODES.M)
-  @Deprecated
-  private static boolean isFingerprintHardwareDetected_Api23_Workaround(@NonNull final Context context) {
-    final FingerprintManager manager = (FingerprintManager) context.getSystemService(FINGERPRINT_SERVICE);
-    return (manager != null) && manager.isHardwareDetected();
+    return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_FINGERPRINT);
   }
 
-  @TargetApi(Build.VERSION_CODES.Q)
   public static boolean isFaceAuthAvailable(@NonNull final Context context) {
     return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_FACE);
   }
 
-    @TargetApi(Build.VERSION_CODES.Q)
     public static boolean isIrisAuthAvailable(@NonNull final Context context) {
         return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_IRIS);
     }

android/src/test/java/com/oblador/keychain/KeychainModuleTest.java → android/src/test/java/com/oblador/keychain/KeychainModuleTests.java

@@ -59,7 +59,7 @@
 import static org.robolectric.Shadows.shadowOf;
 
 @RunWith(RobolectricTestRunner.class)
-public class KeychainModuleTest {
+public class KeychainModuleTests {
   public static final byte[] BYTES_USERNAME = "username".getBytes();
   public static final byte[] BYTES_PASSWORD = "password".getBytes();
   /**