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# What is HTTPretty ?
Once upon a time a python developer wanted to use a RESTful api,
everything was fine but until the day he needed to test the code that
hits the RESTful API: what if the API server is down? What if its
content has changed ?
Don't worry, HTTPretty is here for you:
```python
import requests
from sure import expect
import httpretty
@httpretty.activate
def test_yipit_api_returning_deals():
httpretty.register_uri(httpretty.GET, "http://api.yipit.com/v1/deals/",
body='[{"title": "Test Deal"}]',
content_type="application/json")
response = requests.get('http://api.yipit.com/v1/deals/')
expect(response.json()).to.equal([{"title": "Test Deal"}])
```
## A more technical description
HTTPretty is a HTTP client mock library for Python 100% inspired on ruby's [FakeWeb](http://fakeweb.rubyforge.org/).
If you come from ruby this would probably sound familiar :smiley:
## Installing
Installing httpretty is as easy as:
```bash
pip install HTTPretty
```
# Demo
## expecting a simple response body
```python
import requests
import httpretty
def test_one():
httpretty.enable() # enable HTTPretty so that it will monkey patch the socket module
httpretty.register_uri(httpretty.GET, "http://yipit.com/",
body="Find the best daily deals")
response = requests.get('http://yipit.com')
assert response.text == "Find the best daily deals"
httpretty.disable() # disable afterwards, so that you will have no problems in code that uses that socket module
httpretty.reset() # reset HTTPretty state (clean up registered urls and request history)
```
# Motivation
When building systems that access external resources such as RESTful
webservices, XMLRPC or even simple HTTP requests, we stumble in the
problem:
"I'm gonna need to mock all those requests"
It brings a lot of hassle, you will need to use a generic mocking
tool, mess with scope and so on.
## The idea behind HTTPretty (how it works)
HTTPretty [monkey patches](http://en.wikipedia.org/wiki/Monkey_patch)
Python's [socket](http://docs.python.org/library/socket.html) core
module, reimplementing the HTTP protocol, by mocking requests and
responses.
As for how it works this way, you don't need to worry what http library
you're gonna use.
HTTPretty will mock the response for you :) *(and also give you the latest requests so that you can check them)*
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