api28Fingerprints.java

  @Test
  @Config(sdk = Build.VERSION_CODES.P)
  public void testFingerprintConfigured_api28() throws Exception {
    // GIVEN:
    //   API28 android version
    //   for api24+ system feature should be enabled
    //   fingerprints are configured
    ReactApplicationContext context = getRNContext();
    shadowOf(context.getPackageManager()).setSystemFeature(PackageManager.FEATURE_FINGERPRINT, true);

    // set that hardware is available
    FingerprintManager fm = (FingerprintManager) context.getSystemService(Context.FINGERPRINT_SERVICE);
    shadowOf(fm).setIsHardwareDetected(true);
    shadowOf(fm).setDefaultFingerprints(5); // 5 fingerprints are available

    // WHEN: verify availability
    final int result = BiometricManager.from(context).canAuthenticate();
    final KeychainModule module = new KeychainModule(context);
    final boolean isFingerprintWorking = module.isFingerprintAuthAvailable();

    // THEN: biometrics works
    assertThat(result, is(BiometricManager.BIOMETRIC_SUCCESS));
    assertThat(isFingerprintWorking, is(true));
  }