# Prophecy
[![Stable release](https://poser.pugx.org/phpspec/prophecy/version.svg)](https://packagist.org/packages/phpspec/prophecy)
[![Build Status](https://travis-ci.org/phpspec/prophecy.svg?branch=master)](https://travis-ci.org/phpspec/prophecy)
Prophecy is a highly opinionated yet very powerful and flexible PHP object mocking
framework. Though initially it was created to fulfil phpspec2 needs, it is flexible
enough to be used inside any testing framework out there with minimal effort.
## A simple example
```php
<?php
class UserTest extends PHPUnit_Framework_TestCase
{
private $prophet;
public function testPasswordHashing()
{
$hasher = $this->prophet->prophesize('App\Security\Hasher');
$user = new App\Entity\User($hasher->reveal());
$hasher->generateHash($user, 'qwerty')->willReturn('hashed_pass');
$user->setPassword('qwerty');
$this->assertEquals('hashed_pass', $user->getPassword());
}
protected function setup()
{
$this->prophet = new \Prophecy\Prophet;
}
protected function tearDown()
{
$this->prophet->checkPredictions();
}
}
```
## Installation
### Prerequisites
Prophecy requires PHP 5.3.3 or greater.
### Setup through composer
First, add Prophecy to the list of dependencies inside your `composer.json`:
```json
{
"require-dev": {
"phpspec/prophecy": "~1.0"
}
}
```
Then simply install it with composer:
```bash
$> composer install --prefer-dist
```
You can read more about Composer on its [official webpage](http://getcomposer.org).
## How to use it
First of all, in Prophecy every word has a logical meaning, even the name of the library
itself (Prophecy). When you start feeling that, you'll become very fluid with this
tool.
For example, Prophecy has been named that way because it concentrates on describing the future
behavior of objects with very limited knowledge about them. But as with any other prophecy,
those object prophecies can't create themselves - there should be a Prophet:
```php
$prophet = new Prophecy\Prophet;
```
The Prophet creates prophecies by *prophesizing* them:
```php
$prophecy = $prophet->prophesize();
```
The result of the `prophesize()` method call is a new object of class `ObjectProphecy`. Yes,
that's your specific object prophecy, which describes how your object would behave
in the near future. But first, you need to specify which object you're talking about,
right?
```php
$prophecy->willExtend('stdClass');
$prophecy->willImplement('SessionHandlerInterface');
```
There are 2 interesting calls - `willExtend` and `willImplement`. The first one tells
object prophecy that our object should extend specific class, the second one says that
it should implement some interface. Obviously, objects in PHP can implement multiple
interfaces, but extend only one parent class.
### Dummies
Ok, now we have our object prophecy. What can we do with it? First of all, we can get
our object *dummy* by revealing its prophecy:
```php
$dummy = $prophecy->reveal();
```
The `$dummy` variable now holds a special dummy object. Dummy objects are objects that extend
and/or implement preset classes/interfaces by overriding all their public methods. The key
point about dummies is that they do not hold any logic - they just do nothing. Any method
of the dummy will always return `null` and the dummy will never throw any exceptions.
Dummy is your friend if you don't care about the actual behavior of this double and just need
a token object to satisfy a method typehint.
You need to understand one thing - a dummy is not a prophecy. Your object prophecy is still
assigned to `$prophecy` variable and in order to manipulate with your expectations, you
should work with it. `$dummy` is a dummy - a simple php object that tries to fulfil your
prophecy.
### Stubs
Ok, now we know how to create basic prophecies and reveal dummies from them. That's
awesome if we don't care about our _doubles_ (objects that reflect originals)
interactions. If we do, we need to use *stubs* or *mocks*.
A stub is an object double, which doesn't have any expectations about the object behavior,
but when put in specific environment, behaves in specific way. Ok, I know, it's cryptic,
but bear with me for a minute. Simply put, a stub is a dummy, which depending on the called
method signature does different things (has logic). To create stubs in Prophecy:
```php
$prophecy->read('123')->willReturn('value');
```
Oh wow. We've just made an arbitrary call on the object prophecy? Yes, we did. And this
call returned us a new object instance of class `MethodProphecy`. Yep, that's a specific
method with arguments prophecy. Method prophecies give you the ability to create method
promises or predictions. We'll talk about method predictions later in the _Mocks_ section.
#### Promises
Promises are logical blocks, that represent your fictional methods in prophecy terms
and they are handled by the `MethodProphecy::will(PromiseInterface $promise)` method.
As a matter of fact, the call that we made earlier (`willReturn('value')`) is a simple
shortcut to:
```php
$prophecy->read('123')->will(new Prophecy\Promise\ReturnPromise(array('value')));
```
This promise will cause any call to our double's `read()` method with exactly one
argument - `'123'` to always return `'value'`. But that's only for this
promise, there's plenty others you can use:
- `ReturnPromise` or `->willReturn(1)` - returns a value from a method call
- `ReturnArgumentPromise` or `->willReturnArgument($index)` - returns the nth method argument from call
- `ThrowPromise` or `->willThrow` - causes the method to throw specific exception
- `CallbackPromise` or `->will($callback)` - gives you a quick way to define your own custom logic
Keep in mind, that you can always add even more promises by implementing
`Prophecy\Promise\PromiseInterface`.
#### Method prophecies idempotency
Prophecy enforces same method prophecies and, as a consequence, same promises and
predictions for the same method calls with the same arguments. This means:
```php
$methodProphecy1 = $prophecy->read('123');
$methodProphecy2 = $prophecy->read('123');
$methodProphecy3 = $prophecy->read('321');
$methodProphecy1 === $methodProphecy2;
$methodProphecy1 !== $methodProphecy3;
```
That's interesting, right? Now you might ask me how would you define more complex
behaviors where some method call changes behavior of others. In PHPUnit or Mockery
you do that by predicting how many times your method will be called. In Prophecy,
you'll use promises for that:
```php
$user->getName()->willReturn(null);
// For PHP 5.4
$user->setName('everzet')->will(function () {
$this->getName()->willReturn('everzet');
});
// For PHP 5.3
$user->setName('everzet')->will(function ($args, $user) {
$user->getName()->willReturn('everzet');
});
// Or
$user->setName('everzet')->will(function ($args) use ($user) {
$user->getName()->willReturn('everzet');
});
```
And now it doesn't matter how many times or in which order your methods are called.
What matters is their behaviors and how well you faked it.
#### Arguments wildcarding
The previous example is awesome (at least I hope it is for you), but that's not
optimal enough. We hardcoded `'everzet'` in our expectation. Isn't there a better
way? In fact there is, but it involves understanding what this `'everzet'`
actually is.
You see, even if method arguments used during method prophecy creation look
like simple method arguments, in reality they are not. They are argument token
wildcards. As a matter of fact, `->setName('everzet')` looks like a simple call just
because Prophecy automatically transforms it under the hood into:
```php
$user->setName(new Prophecy\Argument\Token\ExactValueToken('everzet'));
```
Those argument tokens are simple PHP classes, that implement
`Prophecy\Argument\Token\TokenInterface` and tell Prophecy how to compare real arguments
with your expectations. And yes, those cl
没有合适的资源?快使用搜索试试~ 我知道了~
58商铺源码 带红包+试用+分销
共26458个文件
html:7621个
png:7041个
php:4006个
1.该资源内容由用户上传,如若侵权请联系客服进行举报
2.虚拟产品一经售出概不退款(资源遇到问题,请及时私信上传者)
2.虚拟产品一经售出概不退款(资源遇到问题,请及时私信上传者)
版权申诉
0 下载量 131 浏览量
2022-07-08
11:51:24
上传
评论
收藏 516.53MB ZIP 举报
温馨提示
58商铺源码 带红包+试用+分销
资源推荐
资源详情
资源评论
收起资源包目录
58商铺源码 带红包+试用+分销 (26458个子文件)
login_centerleft.jpg.bak 77KB
php_xxtea.c 6KB
xxtea.c 2KB
jQuery forValidator4.1.3шпИюВТчТБшЭ╢ч╗▓чЭС.CHM 333KB
jQuery forValidator4.1.3х╕охКйцЦЗцбг.CHM 333KB
thinkphp.conf 8KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
config 1KB
COPYING 1KB
CREDITS 51B
home.6335dba.css 592KB
app.css 459KB
ionic.css 247KB
ionic.css 218KB
ionic.css 218KB
ionic.min.css 195KB
index.css 187KB
index.css 187KB
ionic.min.css 172KB
ionic.min.css 172KB
user_index.css 170KB
ionic.css 158KB
bootstrap.css 145KB
bootstrap.css 143KB
style.css 123KB
ling_index.css 123KB
ling_index.css 123KB
ling_index.css 123KB
ling_index.css 123KB
ling_index.css 123KB
ling_index.css 123KB
ling_index.css 123KB
bootstrap.min.css 118KB
bootstrap.min.css 115KB
layui.css 58KB
main.css 51KB
user.css 48KB
taskall.css 45KB
ueditor.css 43KB
head.css 40KB
head.css 39KB
styles.css 37KB
styles.css 37KB
styles.css 36KB
styles.css 36KB
styles.css 36KB
styles.css 35KB
styles.css 35KB
styles.css 35KB
ueditor.min.css 34KB
ypzan.css 33KB
n_businessman.css 33KB
n_businessman.css 33KB
n_businessman.css 33KB
jquery.ui.css 31KB
index.css 31KB
register.css 30KB
trial_details.css 30KB
trial_details.css 30KB
default_blue.css 30KB
icon.css 29KB
editor.css 29KB
sd.css 28KB
sd.css 28KB
sd.css 28KB
trial_details.css 28KB
saved_resource2.css 28KB
saved_resource2.css 28KB
loveit_home.css 28KB
saved_resource.css 25KB
saved_resource.css 25KB
head.css 25KB
docs.css 25KB
n_businessman#.css 24KB
businessman.css 24KB
businessman.css 24KB
businessman.css 24KB
siteV2.css 24KB
stylemain.css 23KB
stylemain.css 23KB
bootstrap-responsive.css 23KB
user_style.css 23KB
vms.css 23KB
user_style.css 23KB
共 26458 条
- 1
- 2
- 3
- 4
- 5
- 6
- 265
资源评论
智慧浩海
- 粉丝: 1w+
- 资源: 5119
下载权益
C知道特权
VIP文章
课程特权
开通VIP
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
最新资源
- pta题库答案c语言之复杂度1最大子列和问题.zip
- 三维装箱问题(Three-Dimensional Bin Packing Problem,3D-BPP)是一个经典的组合优化问题
- 以下是一些关于Linux线程同步的基本概念和方法.txt
- 以下是一个简化的示例,它使用pygame库来模拟烟花动画的框架.txt
- Linux线程同步机制深度解析与实用指南.zip
- PTA题库C语言解题策略与实战.rar
- SVPWM控制技术的simulink建模与仿真【包括simulink模型,参考文献,操作步骤】
- AI高清修复图片画质易语言易语言源码易语言填表
- 映射窗口.ec易语言易语言模块CPU占用0%游戏监控窗口监控
- 易语言 361窗口模块高效、便捷、自封装、自用
资源上传下载、课程学习等过程中有任何疑问或建议,欢迎提出宝贵意见哦~我们会及时处理!
点击此处反馈
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功