Adding mapbox-gl branch
This commit is contained in:
Andreas Hocevar
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// Copyright 2008 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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goog.provide('goog.testing.PropertyReplacerTest');
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goog.setTestOnly('goog.testing.PropertyReplacerTest');
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goog.require('goog.testing.PropertyReplacer');
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goog.require('goog.testing.asserts');
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goog.require('goog.testing.jsunit');
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// Test PropertyReplacer with JavaScript objects.
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function testSetJsProperties() {
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var stubs = new goog.testing.PropertyReplacer();
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var x = {a: 1, b: undefined};
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// Setting simple values.
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stubs.set(x, 'num', 1);
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assertEquals('x.num = 1', 1, x.num);
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stubs.set(x, 'undef', undefined);
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assertTrue('x.undef = undefined', 'undef' in x && x.undef === undefined);
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stubs.set(x, 'null', null);
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assertTrue('x["null"] = null', x['null'] === null);
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// Setting a simple value that existed originally.
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stubs.set(x, 'b', null);
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assertTrue('x.b = null', x.b === null);
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// Setting a complex value.
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stubs.set(x, 'obj', {});
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assertEquals('x.obj = {}', 'object', typeof x.obj);
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stubs.set(x.obj, 'num', 2);
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assertEquals('x.obj.num = 2', 2, x.obj.num);
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// Overwriting a leaf.
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stubs.set(x.obj, 'num', 3);
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assertEquals('x.obj.num = 3', 3, x.obj.num);
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// Overwriting a non-leaf.
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stubs.set(x, 'obj', {});
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assertFalse('x.obj = {} again', 'num' in x.obj);
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// Setting a function.
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stubs.set(x, 'func', function(n) { return n + 1; });
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assertEquals('x.func = lambda n: n+1', 11, x.func(10));
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// Setting a constructor and a prototype method.
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stubs.set(x, 'Class', function(num) { this.num = num; });
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stubs.set(x.Class.prototype, 'triple', function() { return this.num * 3; });
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assertEquals('prototype method', 12, (new x.Class(4)).triple());
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// Cleaning up with UnsetAll() twice. The second run should have no effect.
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for (var i = 0; i < 2; i++) {
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stubs.reset();
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assertEquals('x.a preserved', 1, x.a);
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assertTrue('x.b reset', 'b' in x && x.b === undefined);
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assertFalse('x.num removed', 'num' in x);
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assertFalse('x.undef removed', 'undef' in x);
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assertFalse('x["null"] removed', 'null' in x);
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assertFalse('x.obj removed', 'obj' in x);
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assertFalse('x.func removed', 'func' in x);
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assertFalse('x.Class removed', 'Class' in x);
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}
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}
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// Test removing JavaScript object properties.
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function testRemoveJsProperties() {
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var stubs = new goog.testing.PropertyReplacer();
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var orig = {'a': 1, 'b': undefined};
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var x = {'a': 1, 'b': undefined};
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stubs.remove(x, 'a');
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assertFalse('x.a removed', 'a' in x);
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assertTrue('x.b not removed', 'b' in x);
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stubs.reset();
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assertObjectEquals('x.a reset', x, orig);
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stubs.remove(x, 'b');
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assertFalse('x.b removed', 'b' in x);
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stubs.reset();
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assertObjectEquals('x.b reset', x, orig);
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stubs.set(x, 'c', 2);
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stubs.remove(x, 'c');
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assertObjectEquals('x.c added then removed', x, orig);
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stubs.reset();
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assertObjectEquals('x.c reset', x, orig);
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stubs.remove(x, 'b');
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stubs.set(x, 'b', undefined);
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assertObjectEquals('x.b removed then added', x, orig);
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stubs.reset();
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assertObjectEquals('x.b reset', x, orig);
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stubs.remove(x, 'd');
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assertObjectEquals('removing non-existing key', x, orig);
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stubs.reset();
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assertObjectEquals('reset removing non-existing key', x, orig);
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}
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// Test PropertyReplacer with prototype chain.
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function testPrototype() {
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var stubs = new goog.testing.PropertyReplacer();
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// Simple inheritance.
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var a = {a: 0};
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function B() {};
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B.prototype = a;
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var b = new B();
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stubs.set(a, 0, 1);
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stubs.set(b, 0, 2);
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stubs.reset();
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assertEquals('a.a == 0', 0, a['a']);
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assertEquals('b.a == 0', 0, b['a']);
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// Inheritance with goog.inherits.
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var c = {a: 0};
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function C() {};
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C.prototype = c;
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function D() {};
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goog.inherits(D, C);
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var d = new D();
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var stubs = new goog.testing.PropertyReplacer();
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stubs.set(c, 'a', 1);
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stubs.set(d, 'a', 2);
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stubs.reset();
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assertEquals('c.a == 0', 0, c['a']);
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assertEquals('d.a == 0', 0, d['a']);
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// Setting prototype fields.
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stubs.set(B.prototype, 'c', 'z');
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assertEquals('b.c=="z"', 'z', b.c);
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stubs.reset();
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assertFalse('b.c deleted', 'c' in b);
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// Setting Object.prototype's fields.
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stubs.set(Object.prototype, 'one', 1);
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assertEquals('b.one==1', 1, b.one);
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stubs.reset();
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assertFalse('b.one deleted', 'one' in b);
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stubs.set(Object.prototype, 'two', 2);
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stubs.remove(b, 'two');
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assertEquals('b.two==2', 2, b.two);
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stubs.remove(Object.prototype, 'two');
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assertFalse('b.two deleted', 'two' in b);
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stubs.reset();
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assertFalse('Object prototype reset', 'two' in b);
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}
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// Test replacing function properties.
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function testFunctionProperties() {
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var stubs = new goog.testing.PropertyReplacer();
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stubs.set(Array, 'x', 1);
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assertEquals('Array.x==1', 1, Array.x);
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stubs.reset();
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assertFalse('Array.x deleted', 'x' in Array);
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stubs.set(Math.random, 'x', 1);
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assertEquals('Math.random.x==1', 1, Math.random.x);
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stubs.reset();
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assertFalse('Math.random.x deleted', 'x' in Math.random);
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}
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// Test the hasKey_ private method.
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function testHasKey() {
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f = goog.testing.PropertyReplacer.hasKey_;
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assertFalse('{}.a', f({}, 'a'));
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assertTrue('{a:0}.a', f({a: 0}, 'a'));
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function C() {};
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C.prototype.a = 0;
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assertFalse('C.prototype.a set, is C.a own?', f(C, 'a'));
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assertTrue('C.prototype.a', f(C.prototype, 'a'));
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assertFalse('C.a not set', f(C, 'a'));
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C.a = 0;
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assertTrue('C.a set', f(C, 'a'));
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var c = new C();
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assertFalse('C().a, inherited', f(c, 'a'));
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c.a = 0;
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assertTrue('C().a, own', f(c, 'a'));
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assertFalse('window, invalid key', f(window, 'no such key'));
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assertTrue('window, global variable', f(window, 'goog'));
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assertTrue('window, build-in key', f(window, 'location'));
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assertFalse('document, invalid key', f(document, 'no such key'));
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assertTrue('document.body', f(document, 'body'));
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var div = document.createElement('div');
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assertFalse('div, invalid key', f(div, 'no such key'));
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assertTrue('div.className', f(div, 'className'));
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div['a'] = 0;
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assertTrue('div, key added by JS', f(div, 'a'));
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assertFalse('Date().getTime', f(new Date(), 'getTime'));
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assertTrue('Date.prototype.getTime', f(Date.prototype, 'getTime'));
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assertFalse('Math, invalid key', f(Math, 'no such key'));
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assertTrue('Math.random', f(Math, 'random'));
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function Parent() {};
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Parent.prototype.a = 0;
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function Child() {};
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goog.inherits(Child, Parent);
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assertFalse('goog.inherits, parent prototype', f(new Child, 'a'));
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Child.prototype.a = 1;
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assertFalse('goog.inherits, child prototype', f(new Child, 'a'));
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function OverwrittenProto() {};
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OverwrittenProto.prototype = {a: 0};
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assertFalse(f(new OverwrittenProto, 'a'));
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}
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// Test PropertyReplacer with DOM objects' built in attributes.
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function testDomBuiltInAttributes() {
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var div = document.createElement('div');
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div.id = 'old-id';
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var stubs = new goog.testing.PropertyReplacer();
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stubs.set(div, 'id', 'new-id');
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stubs.set(div, 'className', 'test-class');
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assertEquals('div.id == "new-id"', 'new-id', div.id);
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assertEquals('div.className == "test-class"', 'test-class', div.className);
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stubs.remove(div, 'className');
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// '' in Firefox, undefined in Chrome.
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assertEvaluatesToFalse('div.className is empty', div.className);
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stubs.reset();
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assertEquals('div.id == "old-id"', 'old-id', div.id);
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assertEquals('div.name == ""', '', div.className);
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}
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// Test PropertyReplacer with DOM objects' custom attributes.
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function testDomCustomAttributes() {
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var div = document.createElement('div');
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div.attr1 = 'old';
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var stubs = new goog.testing.PropertyReplacer();
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stubs.set(div, 'attr1', 'new');
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stubs.set(div, 'attr2', 'new');
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assertEquals('div.attr1 == "new"', 'new', div.attr1);
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assertEquals('div.attr2 == "new"', 'new', div.attr2);
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stubs.set(div, 'attr3', 'new');
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stubs.remove(div, 'attr3');
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assertEquals('div.attr3 == undefined', undefined, div.attr3);
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stubs.reset();
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assertEquals('div.attr1 == "old"', 'old', div.attr1);
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assertEquals('div.attr2 == undefined', undefined, div.attr2);
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}
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// Test PropertyReplacer overriding Math.random.
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function testMathRandom() {
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var stubs = new goog.testing.PropertyReplacer();
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stubs.set(Math, 'random', function() { return -1; });
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assertEquals('mocked Math.random', -1, Math.random());
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stubs.reset();
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assertNotEquals('original Math.random', -1, Math.random());
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}
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// Tests the replace method of PropertyReplacer.
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function testReplace() {
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var stubs = new goog.testing.PropertyReplacer();
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function C() {
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this.a = 1;
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};
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C.prototype.b = 1;
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C.prototype.toString = function() {
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return 'obj';
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};
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var obj = new C();
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stubs.replace(obj, 'a', 2);
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assertEquals('successfully replaced the own property of an object', 2, obj.a);
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stubs.replace(obj, 'b', 2);
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assertEquals('successfully replaced the property in the prototype', 2, obj.b);
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var error = assertThrows('cannot replace missing key',
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goog.bind(stubs.replace, stubs, obj, 'unknown', 1));
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// Using assertContains instead of assertEquals because Opera 10.0 adds
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// the stack trace to the error message.
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assertEquals('error message for missing key',
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'Cannot replace missing property "unknown" in obj', error.message);
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assertFalse('object not touched', 'unknown' in obj);
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var error = assertThrows('cannot change value type',
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goog.bind(stubs.replace, stubs, obj, 'a', '3'));
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assertContains('error message for type mismatch',
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'Cannot replace property "a" in obj with a value of different type',
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error.message);
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}
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// Tests altering complete namespace paths.
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function testSetPath() {
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goog.global.a = {b: {}};
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var stubs = new goog.testing.PropertyReplacer();
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stubs.setPath('a.b.c.d', 1);
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assertObjectEquals('a.b.c.d=1', {b: {c: {d: 1}}}, goog.global.a);
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stubs.setPath('a.b.e', 2);
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assertObjectEquals('a.b.e=2', {b: {c: {d: 1}, e: 2}}, goog.global.a);
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stubs.setPath('a.f', 3);
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assertObjectEquals('a.f=3', {b: {c: {d: 1}, e: 2}, f: 3}, goog.global.a);
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stubs.setPath('a.f.g', 4);
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assertObjectEquals('a.f.g=4', {b: {c: {d: 1}, e: 2}, f: {g: 4}},
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goog.global.a);
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stubs.setPath('a', 5);
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assertEquals('a=5', 5, goog.global.a);
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stubs.setPath('x.y.z', 5);
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assertObjectEquals('x.y.z=5', {y: {z: 5}}, goog.global.x);
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stubs.reset();
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assertObjectEquals('a.* reset', {b: {}}, goog.global.a);
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// NOTE: it's impossible to delete global variables in Internet Explorer,
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// so ('x' in goog.global) would be true.
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assertUndefined('x.* reset', goog.global.x);
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}
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// Tests altering paths with functions in them.
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function testSetPathWithFunction() {
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var f = function() {};
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goog.global.a = {b: f};
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var stubs = new goog.testing.PropertyReplacer();
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stubs.setPath('a.b.c', 1);
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assertEquals('a.b.c=1, f kept', f, goog.global.a.b);
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assertEquals('a.b.c=1, c set', 1, goog.global.a.b.c);
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stubs.setPath('a.b.prototype.d', 2);
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assertEquals('a.b.prototype.d=2, b kept', f, goog.global.a.b);
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assertEquals('a.b.prototype.d=2, c kept', 1, goog.global.a.b.c);
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assertFalse('a.b.prototype.d=2, a.b.d not set', 'd' in goog.global.a.b);
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assertTrue('a.b.prototype.d=2, proto set', 'd' in goog.global.a.b.prototype);
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assertEquals('a.b.prototype.d=2, d set', 2, new goog.global.a.b().d);
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var invalidSetPath = function() {
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stubs.setPath('a.prototype.e', 3);
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};
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assertThrows('setting the prototype of a non-function', invalidSetPath);
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stubs.reset();
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assertObjectEquals('a.b.c reset', {b: f}, goog.global.a);
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assertObjectEquals('a.b.prototype reset', {}, goog.global.a.b.prototype);
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}
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