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# frozen_string_literal: true
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# Requires Ruby with rspec and faraday gems.
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# rspec client_spec.rb
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require 'faraday'
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require 'json'
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# Example API client
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class Client
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def initialize(conn)
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@conn = conn
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end
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def httpbingo(jname, params: {})
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res = @conn.get("/#{jname}", params)
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data = JSON.parse(res.body)
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data['origin']
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end
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def foo(params)
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res = @conn.post('/foo', JSON.dump(params))
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res.status
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end
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end
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RSpec.describe Client do
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let(:stubs) { Faraday::Adapter::Test::Stubs.new }
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let(:conn) { Faraday.new { |b| b.adapter(:test, stubs) } }
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let(:client) { Client.new(conn) }
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it 'parses origin' do
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stubs.get('/ip') do |env|
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# optional: you can inspect the Faraday::Env
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expect(env.url.path).to eq('/ip')
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[
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200,
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{ 'Content-Type': 'application/javascript' },
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'{"origin": "127.0.0.1"}'
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]
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end
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# uncomment to trigger stubs.verify_stubbed_calls failure
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# stubs.get('/unused') { [404, {}, ''] }
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expect(client.httpbingo('ip')).to eq('127.0.0.1')
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stubs.verify_stubbed_calls
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end
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it 'handles 404' do
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stubs.get('/api') do
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[
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404,
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{ 'Content-Type': 'application/javascript' },
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'{}'
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]
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end
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expect(client.httpbingo('api')).to be_nil
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stubs.verify_stubbed_calls
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end
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it 'handles exception' do
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stubs.get('/api') do
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raise Faraday::ConnectionFailed
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end
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expect { client.httpbingo('api') }.to raise_error(Faraday::ConnectionFailed)
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stubs.verify_stubbed_calls
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end
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context 'When the test stub is run in strict_mode' do
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let(:stubs) { Faraday::Adapter::Test::Stubs.new(strict_mode: true) }
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it 'verifies the all parameter values are identical' do
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stubs.get('/api?abc=123') do
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[
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200,
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{ 'Content-Type': 'application/javascript' },
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'{"origin": "127.0.0.1"}'
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]
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end
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# uncomment to raise Stubs::NotFound
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# expect(client.httpbingo('api', params: { abc: 123, foo: 'Kappa' })).to eq('127.0.0.1')
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expect(client.httpbingo('api', params: { abc: 123 })).to eq('127.0.0.1')
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stubs.verify_stubbed_calls
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end
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end
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context 'When the Faraday connection is configured with FlatParamsEncoder' do
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let(:conn) { Faraday.new(request: { params_encoder: Faraday::FlatParamsEncoder }) { |b| b.adapter(:test, stubs) } }
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it 'handles the same multiple URL parameters' do
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stubs.get('/api?a=x&a=y&a=z') { [200, { 'Content-Type' => 'application/json' }, '{"origin": "127.0.0.1"}'] }
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# uncomment to raise Stubs::NotFound
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# expect(client.httpbingo('api', params: { a: %w[x y] })).to eq('127.0.0.1')
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expect(client.httpbingo('api', params: { a: %w[x y z] })).to eq('127.0.0.1')
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stubs.verify_stubbed_calls
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end
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end
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context 'When you want to test the body, you can use a proc as well as string' do
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it 'tests with a string' do
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stubs.post('/foo', '{"name":"YK"}') { [200, {}, ''] }
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expect(client.foo(name: 'YK')).to eq 200
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stubs.verify_stubbed_calls
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end
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it 'tests with a proc' do
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check = ->(request_body) { JSON.parse(request_body).slice('name') == { 'name' => 'YK' } }
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stubs.post('/foo', check) { [200, {}, ''] }
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expect(client.foo(name: 'YK', created_at: Time.now)).to eq 200
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stubs.verify_stubbed_calls
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end
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end
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end
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