react-native/IntegrationTests/AsyncStorageTest.js

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
'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;