/
firebase-query.html
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firebase-query.html
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<!doctype html>
<!--
@license
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file or at
https://github.com/firebase/polymerfire/blob/master/LICENSE
-->
<html>
<head>
<meta charset="UTF-8">
<title>firebase-query tests</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">
<script src="../../webcomponentsjs/webcomponents-lite.js"></script>
<script src="../../web-component-tester/browser.js"></script>
<link rel="import" href="../firebase-app.html">
<link rel="import" href="../firebase-query.html">
</head>
<body>
<firebase-app
name="test"
api-key="AIzaSyBzKhxNa2k9pA3m9_Ji3POFAKyGGFnyshI"
auth-domain="note-app-firebase-3a483.firebaseapp.com"
database-url="https://note-app-firebase-3a483.firebaseio.com">
</firebase-app>
<test-fixture id="BasicQuery">
<template>
<firebase-query app-name="test"></firebase-query>
</template>
</test-fixture>
<dom-module id="dom-repeat-query">
<template>
<firebase-query id="query" app-name="test" path="/list" data="{{data}}"></firebase-query>
<template id="domRepeat" is="dom-repeat" items="[[data]]">
<div>[[item.val]]</div>
</template>
</template>
</template>
<script>
Polymer({
is: 'dom-repeat-query'
});
</script>
</dom-module>
<test-fixture id="DomRepeatQuery">
<template>
<dom-repeat-query></dom-repeat-query>
</template>
</test-fixture>
<test-fixture id="TwoQueries">
<template>
<firebase-query app-name="test"></firebase-query>
<firebase-query app-name="test"></firebase-query>
</template>
</test-fixture>
<script>
function expectFirebasePathValueToEql(path, value) {
return getFirebaseValue(path).then(function(fbValue) {
var key = value.$key;
if (key) {
delete value.$key;
}
expect(value).to.be.eql(fbValue);
if (key) {
value.$key = key;
}
});
}
function pushFirebaseValue(path, value) {
return firebase.app('test').database().ref(path).push(value);
}
function setFirebaseValue(path, value) {
return firebase.app('test').database().ref(path).set(value);
}
function clearFirebaseValue(path) {
return firebase.app('test').database().ref(path).set(null);
}
function getFirebaseValue(path) {
return new Promise(function(resolve, reject) {
var ref = firebase.app('test').database().ref(path);
ref.on('value', function(snapshot) {
ref.off();
resolve(snapshot.val());
});
ref.on('error', function(error) {
ref.off();
reject(error);
});
});
}
suite('<firebase-query>', function() {
var makeObject;
var root;
setup(function() {
var objectId = 0;
makeObject = function(value) {
return {
val: value || objectId++
};
};
return pushFirebaseValue('/test', { ignore: 'me' }).then(function(snapshot) {
root = '/test/' + snapshot.key;
});
});
teardown(function() {
return clearFirebaseValue(root);
});
suite('ordered query', function() {
var query;
setup(function() {
query = fixture('BasicQuery');
query.path = root + '/list';
return query.transactionsComplete;
});
test('can order by child', function() {
var values = [makeObject(2), makeObject(1), makeObject(0)];
query.orderByChild = 'val';
return setFirebaseValue(query.path, values).then(function() {
values.reverse();
query.data.forEach(function(value, index) {
expect(value.val).to.be.equal(values[index].val);
});
});
});
test('correctly orders newly added items', function() {
var values = [makeObject(1), makeObject(3)];
query.orderByChild = 'val';
return setFirebaseValue(query.path, values).then(function() {
query.data.forEach(function(value, index) {
expect(value.val).to.be.equal(values[index].val);
});
values.splice(1, 0, makeObject(2));
return setFirebaseValue(query.path + '/2', values[1])
.then(function() {
query.data.forEach(function(value, index) {
expect(value.val).to.be.equal(values[index].val);
});
});
});
});
});
suite('basic query', function() {
var query;
setup(function() {
query = fixture('BasicQuery');
query.path = root + '/list';
return query.transactionsComplete;
});
test('updates data array child values', function() {
var object = makeObject();
return pushFirebaseValue(query.path, object).then(function() {
expect(query.exists).to.be.equal(true);
expect(query.data.length).to.be.equal(1);
expect(query.data[0]).to.be.ok;
expect(query.data[0].val).to.be.equal(object.val);
});
});
test('adds new children as they appear', function() {
var promiseChain = Promise.resolve();
[makeObject(), makeObject(), makeObject()].forEach(function(object, index) {
promiseChain = promiseChain.then(function() {
return pushFirebaseValue(query.path, object).then(function() {
expect(query.data.length).to.be.equal(index + 1);
expect(query.data[index]).to.be.ok;
expect(query.data[index].val).to.be.equal(object.val);
});
});
});
return promiseChain;
});
test('removes data items as children are removed', function() {
return Promise.all([makeObject(), makeObject(), makeObject()]
.map(function(object) {
return pushFirebaseValue(query.path, object);
})).then(function(results) {
return clearFirebaseValue(query.path + '/' + results[1].key).then(function() {
expect(query.data.length).to.be.equal(2);
return Promise.all([
expectFirebasePathValueToEql(
query.path + '/' + results[0].key, query.data[0]),
expectFirebasePathValueToEql(
query.path + '/' + results[2].key, query.data[1])
]);
});
});
});
test('updates values when array items change', function() {
var object = makeObject();
return pushFirebaseValue(query.path, object).then(function() {
query.set('data.0.val', object.val + 1);
return query.transactionsComplete;
}).then(function() {
return expectFirebasePathValueToEql(
query.path + '/' + query.data[0].$key, query.data[0]);
});
});
test('removes sub-properties as they are removed from children', function() {
var object = makeObject();
object.foo = true;
return pushFirebaseValue(query.path, object).then(function() {
expect(query.data[0].foo).to.be.eql(true);
return setFirebaseValue(
query.path + '/' + query.data[0].$key + '/foo', null);
}).then(function() {
expect(query.data[0].foo).to.be.eql(undefined);
});
});
test('exists is null when template is stamped', function() {
expect(query.exists).to.be.equal(null);
})
test('exists is true when we have data false when we remove it.', function() {
var object = makeObject();
return pushFirebaseValue(query.path, object).then(function() {
expect(query.exists).to.be.equal(true);
}).then(function(){
clearFirebaseValue(query.path);
}).then(function() {
expect(query.exists).to.be.equal(false);
});
});
});
suite('querying against leaf node collections', function() {
var query;
setup(function() {
query = fixture('BasicQuery');
query.path = root + '/leafNodes';
return query.transactionsComplete;
});
test('should set leaf value as $val on the resulting object', function() {
return setFirebaseValue(query.path, {a: 1, b: 2, c: 3}).then(function() {
expect(query.data[1].$key).to.be.eql('b');
expect(query.data[1].$val).to.be.eql(2);
});
});
test('should persist changes to leaf $val back to db', function() {
return setFirebaseValue(query.path, {a: 1, b: 2, c: 3}).then(function() {
expect(query.data[1].$val).to.be.eql(2);
query.set('data.1.$val', 22);
return query.transactionsComplete;
}).then(function() {
return expectFirebasePathValueToEql(query.path + '/' + query.data[1].$key, query.data[1].$val);
});
});
});
suite('equalTo query', function() {
var query;
setup(function() {
query = fixture('BasicQuery');
query.path = root + '/equalTo';
return query.transactionsComplete;
});
test('should allow an equalTo query with a `false` value', function() {
query.orderByChild = 'thing';
query.equalTo = false;
return setFirebaseValue(query.path, {
a: {thing: true},
b: {thing: false},
c: {thing: false}
}).then(function() {
expect(query.data[0].$key).to.be.eql('b');
expect(query.data.length).to.be.eql(2);
});
});
});
suite('instance isolation', function() {
var queryOne;
var queryTwo;
var path;
setup(function() {
var queries = fixture('TwoQueries');
path = root + '/common';
queryOne = queries[0];
queryTwo = queries[1];
queryOne.path = path;
queryTwo.path = path;
return pushFirebaseValue(path, {
value: 'initial'
});
});
teardown(function() {
return clearFirebaseValue(path);
});
test('queries have the same initial value', function() {
expect(queryOne.data.length).to.be.equal(1);
expect(queryTwo.data.length).to.be.equal(1);
expect(queryOne.data[0].value).to.be.equal(queryTwo.data[0].value);
});
suite('removing one instance from the DOM', function() {
test('preserves listeners on the remaining instance', function() {
queryOne.parentNode.removeChild(queryOne);
return pushFirebaseValue(path, {
value: 'new'
}).then(function() {
expect(queryOne.data.length).to.be.equal(0);
expect(queryTwo.data.length).to.be.equal(2);
});
});
});
});
suite('coordinating with dom-repeat', function() {
var query;
var domRepeat;
setup(function() {
var elements = fixture('DomRepeatQuery');
elements.data = [];
domRepeat = elements.$.domRepeat;
query = elements.$.query;
query.path = root + '/list';
return query.transactionsComplete;
});
test('updates repeated items when values change remotely', function() {
var object = makeObject();
return pushFirebaseValue(query.path, object).then(function() {
return setFirebaseValue(
query.path + '/' + query.data[0].$key + '/val', object.val + 1);
}).then(function() {
var instances = domRepeat._instances || domRepeat.__instances;
expect(instances[0].item).to.be.eql(query.data[0]);
});
});
});
});
</script>
</body>