Feature/better testing

.gitignore

@@ -4,8 +4,13 @@
 
 # npm / yarn
 node_modules/
-npm-debug.log
-yarn-error.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Testing
+coverage/
+.nyc_output
 
 # Xcode
 #
@@ -32,4 +37,14 @@ android/build
 .idea
 .gradle
 local.properties
-*.iml
+*.iml
+
+# React Native
+*.jsbundle
+ios/Pods/
+
+# Test apps (these are generated and shouldn't be committed)
+CryptoTestApp/
+
+# asdf
+.tool-versions

README.md

@@ -116,9 +116,47 @@ All methods are asynchronous and return promises (except for convert utils)
 >
 > `"Raw" (RSA-only) | "SHA1" | "SHA224" | "SHA256" | "SHA384" | "SHA512"`
 
-## Example
+## Testing
+
+This library includes comprehensive unit tests and E2E testing capabilities.
+
+### Unit Tests
+
+```bash
+# Install dependencies
+npm install
+
+# Run all unit tests
+npm test
+
+# Run tests in watch mode (recommended for development)
+npm run test:watch
+
+# Run tests with coverage report
+npm run test:coverage
+```
+
+### E2E Testing
+
+For end-to-end testing with real native modules, create a test app:
+
+```bash
+# Use the automated setup script
+./scripts/create-test-app.sh
+
+# Or manually create a test app
+npx @react-native-community/cli@latest init CryptoTestApp --skip-install
+cd CryptoTestApp
+npm install
+npm install ../
+npm install base64-js hex-lite
+cd ios && bundle install && bundle exec pod install && cd ..
+npm run ios
+```
 
-Testing [repository](https://github.com/ghbutton/react-native-simple-crypto-test).
+The test app provides interactive testing of all crypto functions on real simulators/emulators and is ready to use immediately.
+
+## Example
 
 ```javascript
 import RNSimpleCrypto from "react-native-simple-crypto";