feat: Add Samsung Knox integration and biometric fallback to device passcode

KeychainExample/.detoxrc.js

@@ -56,7 +56,7 @@ module.exports = {
       type: 'android.emulator',
       headless: Boolean(process.env.CI),
       device: {
-        avdName: 'TestingAVD',
+        avdName: 'Medium_Phone_API_36.1',
       },
     },
   },

KeychainExample/android/build.gradle

@@ -55,7 +55,7 @@ allprojects {
                 testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
 
                 ndk {
-                    abiFilters 'arm64-v8a', 'x86', 'x86_64'
+                    abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
                 }
             }
 

KeychainExample/e2e/testCases/knoxTest.spec.js

@@ -0,0 +1,52 @@
+import { by, element, expect, device } from 'detox';
+import { enterBiometrics, waitForAuthValidity } from '../utils/authHelpers';
+
+import {
+    expectCredentialsLoadedMessage,
+    expectCredentialsSavedMessage,
+} from '../utils/statusMessageHelpers';
+
+describe(':android:Knox Storage', () => {
+    beforeEach(async () => {
+        await device.launchApp({ newInstance: true });
+    });
+
+    it(':android:should save with Knox storage', async () => {
+        // Check if Knox option is available
+        const isKnoxAvailable = await element(by.text('Knox')).atIndex(0).exists();
+
+        if (!isKnoxAvailable) {
+            console.warn('Knox option not found, skipping test.');
+            return; // Skip the test if Knox is not available
+        }
+
+        await expect(element(by.text('Keychain Example'))).toExist();
+        await element(by.id('usernameInput')).typeText('testUsernameKnox');
+        await element(by.id('passwordInput')).typeText('testPasswordKnox');
+        // Hide keyboard
+        await element(by.text('Keychain Example')).tap();
+
+        // Select Knox Storage
+        await element(by.text('Knox')).tap();
+
+        await expect(element(by.text('Save'))).toBeVisible();
+        await element(by.text('Save')).tap();
+
+        // Knox usually requires auth, so we might need to enter biometrics depending on implementation
+        // But based on App.tsx, we are using the default Access Control (Biometry + Passcode)
+        // which requires auth.
+        await enterBiometrics();
+
+        await expectCredentialsSavedMessage();
+        await waitForAuthValidity();
+
+        await element(by.text('Load')).tap();
+        await enterBiometrics();
+
+        await expectCredentialsLoadedMessage(
+            'testUsernameKnox',
+            'testPasswordKnox',
+            'KnoxAES'
+        );
+    });
+});