Airborne
RSpec driven API testing framework
Installation
Install Airborne:
$ gem install airborne
Or add it to your Gemfile:
gem 'airborne'
##Creating Tests
require 'airborne'
describe 'sample spec' do
it 'should validate types' do
get 'http://example.com/api/v1/simple_get' #json api that returns { "name" : "John Doe" }
expect_json_types(name: :string)
end
it 'should validate values' do
get 'http://example.com/api/v1/simple_get' #json api that returns { "name" : "John Doe" }
expect_json(name: 'John Doe')
end
end
When calling expect_json_types, these are the valid types that can be tested against:
:int
or:integer
:float
:bool
or:boolean
:string
:date
:object
:null
:array
:array_of_integers
or:array_of_ints
:array_of_floats
:array_of_strings
:array_of_booleans
or:array_of_bools
:array_of_objects
:array_of_arrays
If the properties are optional and may not appear in the response, you can append _or_null
to the types above.
describe 'sample spec' do
it 'should validate types' do
get 'http://example.com/api/v1/simple_get' #json api that returns { "name" : "John Doe" } or { "name" : "John Doe", "age" : 45 }
expect_json_types(name: :string, age: :int_or_null)
end
end
Additionally, if an entire object could be null, but you'd still want to test the types if it does exist, you can wrap the expectations in a call to optional
:
it 'should allow optional nested hash' do
get '/simple_path_get' #may or may not return coordinates
expect_json_types('address.coordinates', optional(latitude: :float, longitude: :float))
end
Additionally, when calling expect_json
, you can provide a regex pattern in a call to regex
:
describe 'sample spec' do
it 'should validate types' do
get 'http://example.com/api/v1/simple_get' #json api that returns { "name" : "John Doe" }
expect_json(name: regex("^John"))
end
end
When calling expect_json
or expect_json_types
, you can optionally provide a block and run your own rspec
expectations:
describe 'sample spec' do
it 'should validate types' do
get 'http://example.com/api/v1/simple_get' #json api that returns { "name" : "John Doe" }
expect_json(name: -> (name){ expect(name.length).to eq(8) })
end
end
Calling expect_json_sizes
actually make use of the above feature and call expect_json
under the hood:
describe 'sample spec' do
it 'should validate types' do
get 'http://example.com/api/v1/simple_get_collection' #json api that returns { "ids" : [1, 2, 3, 4] }
expect_json_sizes(ids: 4)
end
end
##Making requests
Airborne uses rest_client
to make the HTTP request, and supports all HTTP verbs. When creating a test, you can call any of the following methods: get
, post
, put
, patch
, delete
, head
, options
. This will then give you access the following properties:
response
- The HTTP response returned from the requestheaders
- A symbolized hash of the response headers returned by the requestbody
- The raw HTTP body returned from the requestjson_body
- A symbolized hash representation of the JSON returned by the request
For example:
it 'should validate types' do
get 'http://example.com/api/v1/simple_get' #json api that returns { "name" : "John Doe" }
name = json_body[:name] #name will equal "John Doe"
body_as_string = body
end
When calling any of the methods above, you can pass request headers to be used.
get 'http://example.com/api/v1/my_api', { 'x-auth-token' => 'my_token' }
For requests that require a body (post
, put
, patch
) you can pass the body as a hash as well:
post 'http://example.com/api/v1/my_api', { :name => 'John Doe' }, { 'x-auth-token' => 'my_token' }
For requests that require Query params you can pass a params hash into headers.
post 'http://example.com/api/v1/my_api', { }, { 'params' => {'param_key' => 'param_value' }
##Testing Rack Applications
If you have an existing Rack application like sinatra
or grape
you can run Airborne against your application and test without actually having a server running. To do that, just specify your rack application in your Airborne configuration:
Airborne.configure do |config|
config.rack_app = MySinatraApp
end
Under the covers, Airborne uses rack-test to make the requests.
##Rails Applications
If you're testing an API you've written in Rails, Airborne plays along with rspec-rails
:
require 'rails_helper'
RSpec.describe HomeController, :type => :controller do
describe 'GET index' do
it 'returns correct types' do
get :index, :format => 'json' #if your route responds to both html and json
expect_json_types(foo: :string)
end
end
end
##API
expect_json_types
- Tests the types of the JSON property values returnedexpect_json
- Tests the values of the JSON property values returnedexpect_json_keys
- Tests the existence of the specified keys in the JSON objectexpect_json_sizes
- Tests the sizes of the JSON property values returned, also test if the values are arraysexpect_status
- Tests the HTTP status code returnedexpect_header
- Tests for a specified header in the responseexpect_header_contains
- Partial match test on a specified header
##Path Matching
When calling expect_json_types
, expect_json
, expect_json_keys
or expect_json_sizes
you can optionally specify a path as a first parameter.
For example, if our API returns the following JSON:
{
"name": "Alex",
"address": {
"street": "Area 51",
"city": "Roswell",
"state": "NM",
"coordinates": {
"latitude": 33.3872,
"longitude": 104.5281
}
}
}
This test would only test the address object:
describe 'path spec' do
it 'should allow simple path and verify only that path' do
get 'http://example.com/api/v1/simple_path_get'
expect_json_types('address', street: :string, city: :string, state: :string, coordinates: :object)
#or this
expect_json_types('address', street: :string, city: :string, state: :string, coordinates: { latitude: :float, longitude: :float })
end
end
Or, to test the existence of specific keys:
it 'should allow nested paths' do
get 'http://example.com/api/v1/simple_path_get'
expect_json_keys('address', [:street, :city, :state, :coordinates])
end
Alternativley, if we only want to test coordinates
we can dot into just the coordinates
:
it 'should allow nested paths' do
get 'http://example.com/api/v1/simple_path_get'
expect_json('address.coordinates', latitude: 33.3872, longitude: 104.5281)
end
When dealing with arrays
, we can optionally test all (*
) or a single (?
- any, 0
- index) element of the array:
Given the following JSON:
{
"cars": [
{
"make": "Tesla",
"model": "Model S"
},
{
"make": "Lamborghini",
"model": "Aventador"
}
]
}
We can test against just the first car like this:
it 'should index into array and test against specific element' do
get '/array_api'
expect_json('cars.0', make: 'Tesla', model: 'Model S')
end
To test the types of all elements in the array:
it 'should test all elements of the array' do
get 'http://example.com/api/v1/array_api'
expect_json('cars.?', make: 'Tesla', model: 'Model S') # tests that one car in array matches the tesla
expect_json_types('cars.*', make: :string, model: :string) # tests all cars in array for make and model of type string
end
*
and ?
work for nested arrays as well. Given the following JSON:
{
"cars": [
{
"make": "Tesla",
"model": "Model S",
"owners": [
{
"name": "Bart Simpson"
}
]
},
{
"make": "Lamborghini",
"model": "Aventador",
"owners": [
{
"name": "Peter Griffin"
}
]
}
]
}
===
it 'should check all nested arrays for specified elements' do
get 'http://example.com/api/v1/array_with_nested'
expect_json_types('cars.*.owners.*', name: :string)
end
##Dates
JSON has no support for dates, however airborne gives you the ability to check for dates using the following. For expect_json_types
you would use it as you would for any of the other types:
it 'should verify date type' do
get '/get_date' #api that returns {createdAt: "Mon Oct 20 2014 16:10:42 GMT-0400 (EDT)"}
expect_json_types(createdAt: :date)
end
However if you want to check the actual date data with expect_json
, you need to call the date
function:
it 'should verify correct date value' do
get '/get_date' #api that returns {createdAt: "Mon Oct 20 2014 16:10:42 GMT-0400 (EDT)"}
prev_day = DateTime.new(2014,10,19)
next_day = DateTime.new(2014,10,21)
#within the date callback, you can use regular RSpec expectations that work with dates
expect_json(createdAt: date { |value| expect(value).to be_between(prev_day, next_day) })
end
##Configuration
When setting up Airborne, you can call configure
just like you would with rspec
:
#config is the RSpec configuration and can be used just like it
Airborne.configure do |config|
config.include MyModule
end
Additionally, you can specify a base_url
and default headers
to be used on every request (unless overridden in the actual request):
Airborne.configure do |config|
config.base_url = 'http://example.com/api/v1'
config.headers = { 'x-auth-token' => 'my_token' }
end
describe 'spec' do
it 'now we no longer need the full url' do
get '/simple_get'
expect_json_types(name: :string)
end
end
You can also control the strictness of expect_json
and expect_json_types
with the global settings match_expected_default
and match_actual_default
like this.
Airborne.configure do |config|
config.match_expected_default = true
config.match_actual_default = false
end
Airborne sets match_expected_default
to true
and match_actual_default
to false
by default.
You can use the match_expected
and match_actual
settings to override your global defaults in test blocks like this.
describe 'test something', match_expected: true, match_actual: false do
end
OR
describe 'test something' do
Airborne.configuration.match_expected = true
Airborne.configuration.match_actual = false
end
Run it from the CLI
$ cd your/project
$ rspec spec
Authors
Contributors
https://github.com/brooklynDev/airborne/graphs/contributors
Inspired by frisby.js
License
The MIT License
Copyright (c) 2014 brooklyndev, sethpollack
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.