[ReactNative] Add AsyncStorageTest

IntegrationTests/AsyncStorageTest.js

@@ -0,0 +1,148 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ */
+'use strict';
+
+var RCTTestModule = require('NativeModules').TestModule;
+var React = require('react-native');
+var {
+  AsyncStorage,
+  Text,
+  View,
+} = React;
+
+var DEBUG = false;
+
+var KEY_1 = 'key_1';
+var VAL_1 = 'val_1';
+var KEY_2 = 'key_2';
+var VAL_2 = 'val_2';
+
+// setup in componentDidMount
+var done;
+var updateMessage;
+
+function runTestCase(description, fn) {
+  updateMessage(description);
+  fn();
+}
+
+function expectTrue(condition, message) {
+  if (!condition) {
+    throw new Error(message);
+  }
+}
+
+function expectEqual(lhs, rhs, testname) {
+  expectTrue(
+    lhs === rhs,
+    'Error in test ' + testname + ': expected ' + rhs + ', got ' + lhs
+  );
+}
+
+function expectAsyncNoError(err) {
+  expectTrue(err === null, 'Unexpected Async error: ' + JSON.stringify(err));
+}
+
+function testSetAndGet() {
+  AsyncStorage.setItem(KEY_1, VAL_1, (err1) => {
+    expectAsyncNoError(err1);
+    AsyncStorage.getItem(KEY_1, (err2, result) => {
+      expectAsyncNoError(err2);
+      expectEqual(result, VAL_1, 'testSetAndGet setItem');
+      updateMessage('get(key_1) correctly returned ' + result);
+      runTestCase('should get null for missing key', testMissingGet);
+    });
+  });
+}
+
+function testMissingGet() {
+  AsyncStorage.getItem(KEY_2, (err, result) => {
+    expectAsyncNoError(err);
+    expectEqual(result, null, 'testMissingGet');
+    updateMessage('missing get(key_2) correctly returned ' + result);
+    runTestCase('check set twice results in a single key', testSetTwice);
+  });
+}
+
+function testSetTwice() {
+  AsyncStorage.setItem(KEY_1, VAL_1, ()=>{
+    AsyncStorage.setItem(KEY_1, VAL_1, ()=>{
+      AsyncStorage.getItem(KEY_1, (err, result) => {
+        expectAsyncNoError(err);
+        expectEqual(result, VAL_1, 'testSetTwice');
+        updateMessage('setTwice worked as expected');
+        runTestCase('test removeItem', testRemoveItem);
+      });
+    });
+  });
+}
+
+function testRemoveItem() {
+  AsyncStorage.setItem(KEY_1, VAL_1, ()=>{
+    AsyncStorage.setItem(KEY_2, VAL_2, ()=>{
+      AsyncStorage.getAllKeys((err, result) => {
+        expectAsyncNoError(err);
+        expectTrue(
+          result.indexOf(KEY_1) >= 0 && result.indexOf(KEY_2) >= 0,
+          'Missing KEY_1 or KEY_2 in ' + '(' + result + ')'
+        );
+        updateMessage('testRemoveItem - add two items');
+        AsyncStorage.removeItem(KEY_1, (err) => {
+          expectAsyncNoError(err);
+          updateMessage('delete successful ');
+          AsyncStorage.getItem(KEY_1, (err, result) => {
+            expectAsyncNoError(err);
+            expectEqual(
+              result,
+              null,
+              'testRemoveItem: key_1 present after delete'
+            );
+            updateMessage('key properly removed ');
+            AsyncStorage.getAllKeys((err, result2) => {
+             expectAsyncNoError(err);
+             expectTrue(
+               result2.indexOf(KEY_1) === -1,
+               'Unexpected: KEY_1 present in ' + result2
+             );
+             updateMessage('proper length returned.\nDone!');
+             done();
+            });
+          });
+        });
+      });
+    });
+  });
+}
+
+var AsyncStorageTest = React.createClass({
+  getInitialState() {
+    return {
+      messages: 'Initializing...',
+      done: false,
+    };
+  },
+
+  componentDidMount() {
+    done = () => this.setState({done: true}, RCTTestModule.markTestCompleted);
+    updateMessage = (msg) => {
+      this.setState({messages: this.state.messages.concat('\n' + msg)});
+      DEBUG && console.log(msg);
+    };
+    AsyncStorage.clear(testSetAndGet);
+  },
+
+  render() {
+    return (
+      <View style={{backgroundColor: 'white', padding: 40}}>
+        <Text>
+          {this.constructor.displayName + ': '}
+          {this.state.done ? 'Done' : 'Testing...'}
+          {'\n\n' + this.state.messages}
+        </Text>
+      </View>
+    );
+  }
+});
+
+module.exports = AsyncStorageTest;

IntegrationTests/IntegrationTestsApp.js

@@ -19,6 +19,7 @@ var {
 var TESTS = [
   require('./IntegrationTestHarnessTest'),
   require('./TimersTest'),
+  require('./AsyncStorageTest'),
 ];
 
 TESTS.forEach(

IntegrationTests/IntegrationTestsTests/IntegrationTestsTests.m

@@ -42,4 +42,9 @@
   [_runner runTest:@"TimersTest"];
 }
 
+- (void)testAsyncStorage
+{
+  [_runner runTest:@"AsyncStorageTest"];
+}
+
 @end