react-native/IntegrationTests/AsyncStorageTest.js

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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow
*/
'use strict';
var React = require('react');
var ReactNative = require('react-native');
var {AsyncStorage, Text, View} = ReactNative;
var {TestModule} = ReactNative.NativeModules;
var deepDiffer = require('deepDiffer');
var DEBUG = false;
var KEY_1 = 'key_1';
var VAL_1 = 'val_1';
var KEY_2 = 'key_2';
var VAL_2 = 'val_2';
var KEY_MERGE = 'key_merge';
var VAL_MERGE_1 = {foo: 1, bar: {hoo: 1, boo: 1}, moo: {a: 3}};
var VAL_MERGE_2 = {bar: {hoo: 2}, baz: 2, moo: {a: 3}};
var VAL_MERGE_EXPECT = {foo: 1, bar: {hoo: 2, boo: 1}, baz: 2, moo: {a: 3}};
// setup in componentDidMount
var done = (result: ?boolean) => {};
var updateMessage = (message: string) => {};
function runTestCase(description: string, fn) {
updateMessage(description);
fn();
}
function expectTrue(condition: boolean, message: string) {
if (!condition) {
throw new Error(message);
}
}
function expectEqual(lhs, rhs, testname: string) {
expectTrue(
!deepDiffer(lhs, rhs),
'Error in test ' +
testname +
': expected\n' +
JSON.stringify(rhs) +
'\ngot\n' +
JSON.stringify(lhs),
);
}
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function expectAsyncNoError(place, err) {
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if (err instanceof Error) {
err = err.message;
}
expectTrue(
err === null,
'Unexpected error in ' + place + ': ' + JSON.stringify(err),
);
}
function testSetAndGet() {
AsyncStorage.setItem(KEY_1, VAL_1, err1 => {
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expectAsyncNoError('testSetAndGet/setItem', err1);
AsyncStorage.getItem(KEY_1, (err2, result) => {
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expectAsyncNoError('testSetAndGet/getItem', 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) => {
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expectAsyncNoError('testMissingGet/setItem', 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) => {
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expectAsyncNoError('testSetTwice/setItem', 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) => {
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expectAsyncNoError('testRemoveItem/getAllKeys', 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, err2 => {
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expectAsyncNoError('testRemoveItem/removeItem', err2);
updateMessage('delete successful ');
AsyncStorage.getItem(KEY_1, (err3, result2) => {
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expectAsyncNoError('testRemoveItem/getItem', err3);
expectEqual(
result2,
null,
'testRemoveItem: key_1 present after delete',
);
updateMessage('key properly removed ');
AsyncStorage.getAllKeys((err4, result3) => {
expectAsyncNoError('testRemoveItem/getAllKeys', err4);
expectTrue(
result3.indexOf(KEY_1) === -1,
'Unexpected: KEY_1 present in ' + result3,
);
updateMessage('proper length returned.');
runTestCase('should merge values', testMerge);
});
});
});
});
});
});
}
function testMerge() {
AsyncStorage.setItem(KEY_MERGE, JSON.stringify(VAL_MERGE_1), err1 => {
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expectAsyncNoError('testMerge/setItem', err1);
AsyncStorage.mergeItem(KEY_MERGE, JSON.stringify(VAL_MERGE_2), err2 => {
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expectAsyncNoError('testMerge/mergeItem', err2);
AsyncStorage.getItem(KEY_MERGE, (err3, result) => {
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expectAsyncNoError('testMerge/setItem', err3);
expectEqual(JSON.parse(result), VAL_MERGE_EXPECT, 'testMerge');
updateMessage('objects deeply merged\nDone!');
runTestCase('multi set and get', testOptimizedMultiGet);
});
});
});
}
function testOptimizedMultiGet() {
let batch = [[KEY_1, VAL_1], [KEY_2, VAL_2]];
let keys = batch.map(([key, value]) => key);
AsyncStorage.multiSet(batch, err1 => {
// yes, twice on purpose
[1, 2].forEach(i => {
expectAsyncNoError(`${i} testOptimizedMultiGet/multiSet`, err1);
AsyncStorage.multiGet(keys, (err2, result) => {
expectAsyncNoError(`${i} testOptimizedMultiGet/multiGet`, err2);
expectEqual(result, batch, `${i} testOptimizedMultiGet multiGet`);
updateMessage(
'multiGet([key_1, key_2]) correctly returned ' +
JSON.stringify(result),
);
done();
});
});
});
}
class AsyncStorageTest extends React.Component<{}, $FlowFixMeState> {
state = {
messages: 'Initializing...',
done: false,
};
componentDidMount() {
done = () =>
this.setState({done: true}, () => {
TestModule.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>
{/* $FlowFixMe(>=0.54.0 site=react_native_fb,react_native_oss) This
* comment suppresses an error found when Flow v0.54 was deployed.
* To see the error delete this comment and run Flow. */
this.constructor.displayName + ': '}
{this.state.done ? 'Done' : 'Testing...'}
{'\n\n' + this.state.messages}
</Text>
</View>
);
}
}
AsyncStorageTest.displayName = 'AsyncStorageTest';
module.exports = AsyncStorageTest;