Add tests

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["react-native"]
+}

.eslintignore

@@ -0,0 +1 @@
+coverage/*

.eslintrc.js

@@ -6,5 +6,8 @@ module.exports = {
     "prettier",
     "prettier/react"
   ],
-  root: true
+  root: true,
+  rules: {
+    "callback-return": "off"
+  }
 };

README.md

@@ -1,6 +1,7 @@
 # redux-persist-sensitive-storage
 
 [![npm version](https://badge.fury.io/js/redux-persist-sensitive-storage.svg)](https://www.npmjs.com/package/redux-persist-sensitive-storage)
+[![CircleCI](https://circleci.com/gh/CodingZeal/redux-persist-sensitive-storage.svg?style=shield)](https://circleci.com/gh/CodingZeal/redux-persist-sensitive-storage)
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://opensource.org/licenses/MIT)
 
 redux-persist storage engine for react-native-sensitive-info
@@ -16,7 +17,7 @@ More details coming soon!
   - [ ] Mention that storage is not (yet) secure on Android, but point at branch on r-n-s-i that adds that.
   - [ ] Contributing
 
-- [ ] Add tests
+- [x] Add tests
 
 - [ ] Test on both iOS and Android
 

circle.yml

@@ -0,0 +1,15 @@
+machine:
+  environment:
+    PATH: "${PATH:${HOME}/${CIRCLE_PROJECT_REPONAME}/node_modules/.bin"
+  node:
+    version: 6.11.0
+
+dependencies:
+  cache_directories:
+    - ~/.cache/yarn
+  override:
+    - yarn
+
+test:
+  override:
+    - yarn validate

index.js

@@ -28,50 +28,55 @@ export default function(options = {}) {
     android: Object.keys
   });
 
+  const noop = () => null;
+
   return {
-    /* eslint-disable callback-return */
-    async getItem(key, callback) {
+    async getItem(key, callback = noop) {
       try {
         // getItem() returns `null` on Android and `undefined` on iOS;
         // explicitly return `null` here as `undefined` causes an exception
         // upstream.
-        const result = (await sensitiveInfo.getItem(key, options)) || null;
+        let result = await sensitiveInfo.getItem(key, options);
+
+        if (typeof result === "undefined") {
+          result = null;
+        }
 
-        callback && callback(null, result);
+        callback(null, result);
 
         return result;
       } catch (error) {
-        callback && callback(error);
+        callback(error);
         throw error;
       }
     },
 
-    async setItem(key, value, callback) {
+    async setItem(key, value, callback = noop) {
       try {
         await sensitiveInfo.setItem(key, value, options);
-        callback && callback(null);
+        callback(null);
       } catch (error) {
         callback(error);
         throw error;
       }
     },
 
-    async removeItem(key, callback) {
+    async removeItem(key, callback = noop) {
       try {
         await sensitiveInfo.deleteItem(key, options);
-        callback && callback(null);
+        callback(null);
       } catch (error) {
         callback(error);
         throw error;
       }
     },
 
-    async getAllKeys(callback) {
+    async getAllKeys(callback = noop) {
       try {
         const values = await sensitiveInfo.getAllItems(options);
         const result = extractKeys(values);
 
-        callback && callback(null, result);
+        callback(null, result);
 
         return result;
       } catch (error) {

package.json

@@ -3,12 +3,16 @@
   "version": "0.1.0",
   "description": "redux-persist storage engine for react-native-sensitive-info",
   "main": "index.js",
-  "files": ["index.js"],
+  "files": [
+    "index.js"
+  ],
   "scripts": {
     "format": "prettier --write '**/*.js'",
     "lint": "eslint '**/*.js' --max-warnings 0",
     "precommit": "lint-staged",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "jest --coverage",
+    "test:watch": "jest --watch",
+    "validate": "npm-run-all -p lint test"
   },
   "repository": {
     "type": "git",
@@ -37,17 +41,27 @@
   },
   "devDependencies": {
     "babel-eslint": "^7.2.3",
+    "babel-jest": "^20.0.3",
     "eslint": "3.19.0",
     "eslint-config-prettier": "^2.1.1",
     "eslint-config-zeal": "^1.0.0",
     "eslint-plugin-import": "^2.3.0",
+    "eslint-plugin-jest": "^20.0.3",
     "eslint-plugin-react": "^7.1.0",
     "eslint-plugin-react-native": "^2.3.2",
     "husky": "^0.13.4",
+    "jest": "^20.0.4",
     "lint-staged": "^3.6.1",
+    "npm-run-all": "^4.0.2",
     "prettier": "^1.4.4",
     "react": "16.0.0-alpha.12",
-    "react-native": "^0.45.1"
+    "react-native": "^0.45.1",
+    "react-native-sensitive-info": "^5.1.0",
+    "testdouble": "^3.0.0"
+  },
+  "jest": {
+    "preset": "react-native",
+    "setupTestFrameworkScriptFile": "<rootDir>/test/setupTests.js"
   },
   "lint-staged": {
     "*.js": "prettier --list-different"

test/.eslintrc.json

@@ -0,0 +1,7 @@
+{
+  "extends": ["zeal/jest"],
+  "rules": {
+    "arrow-body-style": "off",
+    "global-require": "off"
+  }
+}