faraday/test/connection_test.rb

require File.expand_path('../helper', __FILE__)

class TestConnection < Faraday::TestCase
  def teardown
    Faraday.default_connection_options = nil
  end

  def with_test_conn
    old_conn = Faraday.default_connection
    Faraday.default_connection = Faraday::Connection.new do |builder|
      builder.adapter :test do |stub|
        stub.get('/') do |_|
          [200, nil, nil]
        end
      end
    end

    begin
      yield
    ensure
      Faraday.default_connection = old_conn
    end
  end

  def with_env_proxy_disabled
    Faraday.ignore_env_proxy = true

    begin
      yield
    ensure
      Faraday.ignore_env_proxy = false
    end
  end

  def with_env(new_env)
    old_env = {}

    new_env.each do |key, value|
      old_env[key] = ENV.fetch(key, false)
      ENV[key] = value
    end

    begin
      yield
    ensure
      old_env.each do |key, value|
        if value == false
          ENV.delete key
        else
          ENV[key] = value
        end
      end
    end
  end

  def test_initialize_parses_host_out_of_given_url
    conn = Faraday::Connection.new 'http://sushi.com'
    assert_equal 'sushi.com', conn.host
  end

  def test_initialize_inherits_default_port_out_of_given_url
    conn = Faraday::Connection.new 'http://sushi.com'
    assert_equal 80, conn.port
  end

  def test_initialize_parses_scheme_out_of_given_url
    conn = Faraday::Connection.new 'http://sushi.com'
    assert_equal 'http', conn.scheme
  end

  def test_initialize_parses_port_out_of_given_url
    conn = Faraday::Connection.new 'http://sushi.com:815'
    assert_equal 815, conn.port
  end

  def test_initialize_parses_nil_path_prefix_out_of_given_url
    conn = Faraday::Connection.new 'http://sushi.com'
    assert_equal '/', conn.path_prefix
  end

  def test_initialize_parses_path_prefix_out_of_given_url
    conn = Faraday::Connection.new 'http://sushi.com/fish'
    assert_equal '/fish', conn.path_prefix
  end

  def test_initialize_parses_path_prefix_out_of_given_url_option
    conn = Faraday::Connection.new :url => 'http://sushi.com/fish'
    assert_equal '/fish', conn.path_prefix
  end

  def test_initialize_stores_default_params_from_options
    conn = Faraday::Connection.new :params => {:a => 1}
    assert_equal({'a' => 1}, conn.params)
  end

  def test_initialize_stores_default_params_from_uri
    conn = Faraday::Connection.new 'http://sushi.com/fish?a=1'
    assert_equal({'a' => '1'}, conn.params)
  end

  def test_initialize_stores_default_params_from_uri_and_options
    conn = Faraday::Connection.new 'http://sushi.com/fish?a=1&b=2', :params => {'a' => 3}
    assert_equal({'a' => 3, 'b' => '2'}, conn.params)
  end

  def test_initialize_stores_default_headers_from_options
    conn = Faraday::Connection.new :headers => {:user_agent => 'Faraday'}
    assert_equal 'Faraday', conn.headers['User-agent']
  end

  def test_basic_auth_sets_header
    conn = Faraday::Connection.new
    assert_nil conn.headers['Authorization']

    conn.basic_auth 'Aladdin', 'open sesame'
    assert auth = conn.headers['Authorization']
    assert_equal 'Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==', auth
  end

  def test_auto_parses_basic_auth_from_url_and_unescapes
    conn = Faraday::Connection.new :url => 'http://foo%40bar.com:pass%20word@sushi.com/fish'
    assert auth = conn.headers['Authorization']
    assert_equal Faraday::Request::BasicAuthentication.header('foo@bar.com', 'pass word'), auth
  end

  def test_token_auth_sets_header
    conn = Faraday::Connection.new
    assert_nil conn.headers['Authorization']

    conn.token_auth 'abcdef', :nonce => 'abc'
    assert auth = conn.headers['Authorization']
    assert_match(/^Token /, auth)
    assert_match(/token="abcdef"/, auth)
    assert_match(/nonce="abc"/, auth)
  end

  def test_build_exclusive_url_uses_connection_host_as_default_uri_host
    conn = Faraday::Connection.new
    conn.host = 'sushi.com'
    uri = conn.build_exclusive_url('/sake.html')
    assert_equal 'sushi.com', uri.host
  end

  def test_build_exclusive_url_overrides_connection_port_for_absolute_urls
    conn = Faraday::Connection.new
    conn.port = 23
    uri = conn.build_exclusive_url('http://sushi.com')
    assert_equal 80, uri.port
  end

  def test_build_exclusive_url_uses_connection_scheme_as_default_uri_scheme
    conn = Faraday::Connection.new 'http://sushi.com'
    uri = conn.build_exclusive_url('/sake.html')
    assert_equal 'http', uri.scheme
  end

  def test_build_exclusive_url_uses_connection_path_prefix_to_customize_path
    conn = Faraday::Connection.new
    conn.path_prefix = '/fish'
    uri = conn.build_exclusive_url('sake.html')
    assert_equal '/fish/sake.html', uri.path
  end

  def test_build_exclusive_url_uses_root_connection_path_prefix_to_customize_path
    conn = Faraday::Connection.new
    conn.path_prefix = '/'
    uri = conn.build_exclusive_url('sake.html')
    assert_equal '/sake.html', uri.path
  end

  def test_build_exclusive_url_forces_connection_path_prefix_to_be_absolute
    conn = Faraday::Connection.new
    conn.path_prefix = 'fish'
    uri = conn.build_exclusive_url('sake.html')
    assert_equal '/fish/sake.html', uri.path
  end

  def test_build_exclusive_url_ignores_connection_path_prefix_trailing_slash
    conn = Faraday::Connection.new
    conn.path_prefix = '/fish/'
    uri = conn.build_exclusive_url('sake.html')
    assert_equal '/fish/sake.html', uri.path
  end

  def test_build_exclusive_url_allows_absolute_uri_to_ignore_connection_path_prefix
    conn = Faraday::Connection.new
    conn.path_prefix = '/fish'
    uri = conn.build_exclusive_url('/sake.html')
    assert_equal '/sake.html', uri.path
  end

  def test_build_exclusive_url_parses_url_params_into_path
    conn = Faraday::Connection.new
    uri = conn.build_exclusive_url('http://sushi.com/sake.html')
    assert_equal '/sake.html', uri.path
  end

  def test_build_exclusive_url_doesnt_add_ending_slash_given_nil_url
    conn = Faraday::Connection.new
    conn.url_prefix = 'http://sushi.com/nigiri'
    uri = conn.build_exclusive_url
    assert_equal '/nigiri', uri.path
  end

  def test_build_exclusive_url_doesnt_add_ending_slash_given_empty_url
    conn = Faraday::Connection.new
    conn.url_prefix = 'http://sushi.com/nigiri'
    uri = conn.build_exclusive_url('')
    assert_equal '/nigiri', uri.path
  end

  def test_build_exclusive_url_doesnt_use_connection_params
    conn = Faraday::Connection.new 'http://sushi.com/nigiri'
    conn.params = {:a => 1}
    assert_equal 'http://sushi.com/nigiri', conn.build_exclusive_url.to_s
  end

  def test_build_exclusive_url_uses_argument_params
    conn = Faraday::Connection.new 'http://sushi.com/nigiri'
    conn.params = {:a => 1}
    params = Faraday::Utils::ParamsHash.new
    params[:a] = 2
    url = conn.build_exclusive_url(nil, params)
    assert_equal 'http://sushi.com/nigiri?a=2', url.to_s
  end

  def test_build_url_uses_params
    conn = Faraday::Connection.new 'http://sushi.com/nigiri'
    conn.params = {:a => 1, :b => 1}
    assert_equal 'http://sushi.com/nigiri?a=1&b=1', conn.build_url.to_s
  end

  def test_build_url_merges_params
    conn = Faraday::Connection.new 'http://sushi.com/nigiri'
    conn.params = {:a => 1, :b => 1}
    url = conn.build_url(nil, :b => 2, :c => 3)
    assert_equal 'http://sushi.com/nigiri?a=1&b=2&c=3', url.to_s
  end

  def test_request_header_change_does_not_modify_connection_header
    connection = Faraday.new(:url => 'https://asushi.com/sake.html')
    connection.headers = {'Authorization' => 'token abc123'}

    request = connection.build_request(:get)
    request.headers.delete('Authorization')

    assert_equal connection.headers.keys.sort, ['Authorization']
    assert connection.headers.include?('Authorization')

    assert_equal request.headers.keys.sort, []
    assert !request.headers.include?('Authorization')
  end

  def test_env_url_parses_url_params_into_query
    uri = env_url('http://sushi.com/sake.html', 'a[b]' => '1 + 2')
    assert_equal 'a%5Bb%5D=1+%2B+2', uri.query
  end

  def test_env_url_escapes_per_spec
    uri = env_url(nil, 'a' => '1+2 foo~bar.-baz')
    assert_equal 'a=1%2B2+foo~bar.-baz', uri.query
  end

  def test_env_url_bracketizes_nested_params_in_query
    url = env_url nil, 'a' => {'b' => 'c'}
    assert_equal 'a%5Bb%5D=c', url.query
  end

  def test_env_url_bracketizes_repeated_params_in_query
    uri = env_url('http://sushi.com/sake.html', 'a' => [1, 2])
    assert_equal 'a%5B%5D=1&a%5B%5D=2', uri.query
  end

  def test_env_url_without_braketizing_repeated_params_in_query
    uri = env_url 'http://sushi.com', 'a' => [1, 2] do |conn|
      conn.options.params_encoder = Faraday::FlatParamsEncoder
    end
    assert_equal 'a=1&a=2', uri.query
  end

  def test_build_exclusive_url_parses_url
    conn = Faraday::Connection.new
    uri = conn.build_exclusive_url('http://sushi.com/sake.html')
    assert_equal 'http', uri.scheme
    assert_equal 'sushi.com', uri.host
    assert_equal '/sake.html', uri.path
  end

  def test_build_exclusive_url_parses_url_and_changes_scheme
    conn = Faraday::Connection.new :url => 'http://sushi.com/sushi'
    conn.scheme = 'https'
    uri = conn.build_exclusive_url('sake.html')
    assert_equal 'https://sushi.com/sushi/sake.html', uri.to_s
  end

  def test_build_exclusive_url_joins_url_to_base_with_ending_slash
    conn = Faraday::Connection.new :url => 'http://sushi.com/sushi/'
    uri = conn.build_exclusive_url('sake.html')
    assert_equal 'http://sushi.com/sushi/sake.html', uri.to_s
  end

  def test_build_exclusive_url_used_default_base_with_ending_slash
    conn = Faraday::Connection.new :url => 'http://sushi.com/sushi/'
    uri = conn.build_exclusive_url
    assert_equal 'http://sushi.com/sushi/', uri.to_s
  end

  def test_build_exclusive_url_overrides_base
    conn = Faraday::Connection.new :url => 'http://sushi.com/sushi/'
    uri = conn.build_exclusive_url('/sake/')
    assert_equal 'http://sushi.com/sake/', uri.to_s
  end

  def test_build_exclusive_url_handles_uri_instances
    conn = Faraday::Connection.new
    uri = conn.build_exclusive_url(URI('/sake.html'))
    assert_equal '/sake.html', uri.path
  end

  def test_proxy_accepts_string
    with_env 'http_proxy' => 'http://duncan.proxy.com:80' do
      conn = Faraday::Connection.new
      conn.proxy = 'http://proxy.com'
      assert_equal 'proxy.com', conn.proxy.host
    end
  end

  def test_proxy_accepts_uri
    with_env 'http_proxy' => 'http://duncan.proxy.com:80' do
      conn = Faraday::Connection.new
      conn.proxy = URI.parse('http://proxy.com')
      assert_equal 'proxy.com', conn.proxy.host
    end
  end

  def test_proxy_accepts_hash_with_string_uri
    with_env 'http_proxy' => 'http://duncan.proxy.com:80' do
      conn = Faraday::Connection.new
      conn.proxy = {:uri => 'http://proxy.com', :user => 'rick'}
      assert_equal 'proxy.com', conn.proxy.host
      assert_equal 'rick',      conn.proxy.user
    end
  end

  def test_proxy_accepts_hash
    with_env 'http_proxy' => 'http://duncan.proxy.com:80' do
      conn = Faraday::Connection.new
      conn.proxy = {:uri => URI.parse('http://proxy.com'), :user => 'rick'}
      assert_equal 'proxy.com', conn.proxy.host
      assert_equal 'rick',      conn.proxy.user
    end
  end

  def test_proxy_accepts_http_env
    with_env 'http_proxy' => 'http://duncan.proxy.com:80' do
      conn = Faraday::Connection.new
      assert_equal 'duncan.proxy.com', conn.proxy.host
    end
  end

  def test_proxy_accepts_http_env_with_auth
    with_env 'http_proxy' => 'http://a%40b:my%20pass@duncan.proxy.com:80' do
      conn = Faraday::Connection.new
      assert_equal 'a@b',     conn.proxy.user
      assert_equal 'my pass', conn.proxy.password
    end
  end

  def test_proxy_accepts_env_without_scheme
    with_env 'http_proxy' => 'localhost:8888' do
      uri = Faraday::Connection.new.proxy[:uri]
      assert_equal 'localhost', uri.host
      assert_equal 8888, uri.port
    end
  end

  def test_no_proxy_from_env
    with_env 'http_proxy' => nil do
      conn = Faraday::Connection.new
      assert_nil conn.proxy
    end
  end

  def test_no_proxy_from_blank_env
    with_env 'http_proxy' => '' do
      conn = Faraday::Connection.new
      assert_nil conn.proxy
    end
  end

  def test_proxy_doesnt_accept_uppercase_env
    with_env 'HTTP_PROXY' => 'http://localhost:8888/' do
      conn = Faraday::Connection.new
      assert_nil conn.proxy
    end
  end

  def test_dynamic_proxy
    with_test_conn do
      with_env 'http_proxy' => 'http://duncan.proxy.com:80' do
        Faraday.get('http://google.co.uk')
        assert_equal 'duncan.proxy.com', Faraday.default_connection.instance_variable_get('@temp_proxy').host
      end
      Faraday.get('http://google.co.uk')
      assert_nil Faraday.default_connection.instance_variable_get('@temp_proxy')
    end
  end

  def test_ignore_env_proxy
    with_env_proxy_disabled do
      with_env 'http_proxy' => 'http://duncan.proxy.com:80' do
        conn = Faraday::Connection.new(proxy: nil)
        assert_nil conn.proxy
      end
    end
  end

  if URI.parse('').respond_to?(:find_proxy)
    def test_proxy_allowed_when_url_in_no_proxy_list
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => 'example.com' do
        conn = Faraday::Connection.new('http://example.com')
        assert_nil conn.proxy
      end
    end

    def test_proxy_allowed_when_prefixed_url_is_not_in_no_proxy_list
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => 'example.com' do
        conn = Faraday::Connection.new('http://prefixedexample.com')
        assert_equal 'proxy.com', conn.proxy.host
      end
    end

    def test_proxy_allowed_when_subdomain_url_is_in_no_proxy_list
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => 'example.com' do
        conn = Faraday::Connection.new('http://subdomain.example.com')
        assert_nil conn.proxy
      end
    end

    def test_proxy_allowed_when_url_not_in_no_proxy_list
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => 'example2.com' do
        conn = Faraday::Connection.new('http://example.com')
        assert_equal 'proxy.com', conn.proxy.host
      end
    end

    def test_proxy_allowed_when_ip_address_is_not_in_no_proxy_list_but_url_is
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => 'localhost' do
        conn = Faraday::Connection.new('http://127.0.0.1')
        assert_nil conn.proxy
      end
    end

    def test_proxy_allowed_when_url_is_not_in_no_proxy_list_but_ip_address_is
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => '127.0.0.1' do
        conn = Faraday::Connection.new('http://localhost')
        assert_nil conn.proxy
      end
    end

    def test_proxy_allowed_in_multi_element_no_proxy_list
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => 'example0.com,example.com,example1.com' do
        assert_nil Faraday::Connection.new('http://example0.com').proxy
        assert_nil Faraday::Connection.new('http://example.com').proxy
        assert_nil Faraday::Connection.new('http://example1.com').proxy
        assert_equal 'proxy.com', Faraday::Connection.new('http://example2.com').proxy.host
      end
    end

    def test_dynamic_no_proxy
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => 'google.co.uk' do
        conn = Faraday.new

        assert_equal 'proxy.com', conn.instance_variable_get('@temp_proxy').host
        conn.get('https://google.co.uk')
        assert_nil conn.instance_variable_get('@temp_proxy')
      end
    end

    def test_issue
      with_env 'http_proxy' => 'http://proxy.com', 'no_proxy' => 'google.co.uk' do
        conn = Faraday.new
        conn.proxy = 'http://proxy2.com'

        assert_equal true, conn.instance_variable_get('@manual_proxy')
        assert_equal 'proxy2.com', conn.proxy_for_request('https://google.co.uk').host
      end
    end
  end

  def test_proxy_requires_uri
    conn = Faraday::Connection.new
    assert_raises ArgumentError do
      conn.proxy = {:uri => :bad_uri, :user => 'rick'}
    end
  end

  def test_dups_connection_object
    conn = Faraday::Connection.new 'http://sushi.com/foo',
      :ssl => { :verify => :none },
      :headers => {'content-type' => 'text/plain'},
      :params => {'a'=>'1'},
      :request => {:timeout => 5}

    other = conn.dup

    assert_equal conn.build_exclusive_url, other.build_exclusive_url
    assert_equal 'text/plain', other.headers['content-type']
    assert_equal '1', other.params['a']

    other.basic_auth('', '')
    other.headers['content-length'] = 12
    other.params['b'] = '2'
    other.options[:open_timeout] = 10

    assert_equal 2, other.builder.handlers.size
    assert_equal 2, conn.builder.handlers.size
    assert !conn.headers.key?('content-length')
    assert !conn.params.key?('b')
    assert_equal 5, other.options[:timeout]
    assert_nil conn.options[:open_timeout]
  end

  def test_initialize_with_false_option
    conn = Faraday::Connection.new :ssl => {:verify => false}
    assert !conn.ssl.verify?
  end

  def test_init_with_block
    conn = Faraday::Connection.new { }
    assert_equal 0, conn.builder.handlers.size
  end

  def test_init_with_block_yields_connection
    conn = Faraday::Connection.new(:params => {'a'=>'1'}) { |faraday|
      faraday.adapter :net_http
      faraday.url_prefix = 'http://sushi.com/omnom'
      assert_equal '1', faraday.params['a']
    }
    assert_equal 1, conn.builder.handlers.size
    assert_equal '/omnom', conn.path_prefix
  end

  def test_respond_to
    assert Faraday.respond_to?(:get)
    assert Faraday.respond_to?(:post)
  end

  def test_default_connection_options
    Faraday.default_connection_options.request.timeout = 10
    conn = Faraday.new 'http://sushi.com/foo'
    assert_equal 10, conn.options.timeout
  end

  def test_default_connection_options_without_url
    Faraday.default_connection_options.request.timeout = 10
    conn = Faraday.new :url => 'http://sushi.com/foo'
    assert_equal 10, conn.options.timeout
  end

  def test_default_connection_options_as_hash
    Faraday.default_connection_options = { request: { timeout: 10 } }
    conn = Faraday.new 'http://sushi.com/foo'
    assert_equal 10, conn.options.timeout
  end

  def test_default_connection_options_as_hash_without_url
    Faraday.default_connection_options = { request: { timeout: 10 } }
    conn = Faraday.new :url => 'http://sushi.com/foo'
    assert_equal 10, conn.options.timeout
  end

  def test_default_connection_options_as_hash_with_instance_connection_options
    Faraday.default_connection_options = { request: { timeout: 10 } }
    conn = Faraday.new 'http://sushi.com/foo', request: { open_timeout: 1 }
    assert_equal 1, conn.options.open_timeout
    assert_equal 10, conn.options.timeout
  end

  def test_default_connection_options_persist_with_an_instance_overriding
    Faraday.default_connection_options.request.timeout = 10
    conn = Faraday.new 'http://nigiri.com/bar'
    conn.options.timeout = 1
    assert_equal 10, Faraday.default_connection_options.request.timeout

    other = Faraday.new :url => 'https://sushi.com/foo'
    other.options.timeout = 1

    assert_equal 10, Faraday.default_connection_options.request.timeout
  end

  def test_default_connection_uses_default_connection_options
    Faraday.default_connection_options.request.timeout = 10
    default_conn = Faraday.default_connection

    assert_equal 10, default_conn.options.timeout
  end

  def env_url(url, params)
    conn = Faraday::Connection.new(url, :params => params)
    yield(conn) if block_given?
    req = conn.build_request(:get)
    req.to_env(conn).url
  end
end

class TestRequestParams < Faraday::TestCase
  def create_connection(*args)
    @conn = Faraday::Connection.new(*args) do |conn|
      yield(conn) if block_given?
      class << conn.builder
        undef app
        def app() lambda { |env| env } end
      end
    end
  end

  def assert_query_equal(expected, query)
    assert_equal expected, query.split('&').sort
  end

  def with_default_params_encoder(encoder)
    old_encoder = Faraday::Utils.default_params_encoder
    begin
      Faraday::Utils.default_params_encoder = encoder
      yield
    ensure
      Faraday::Utils.default_params_encoder = old_encoder
    end
  end

  def test_merges_connection_and_request_params
    create_connection 'http://a.co/?token=abc', :params => {'format' => 'json'}
    query = get '?page=1', :limit => 5
    assert_query_equal %w[format=json limit=5 page=1 token=abc], query
  end

  def test_overrides_connection_params
    create_connection 'http://a.co/?a=a&b=b&c=c', :params => {:a => 'A'} do |conn|
      conn.params[:b] = 'B'
      assert_equal 'c', conn.params[:c]
    end
    assert_query_equal %w[a=A b=B c=c], get
  end

  def test_all_overrides_connection_params
    create_connection 'http://a.co/?a=a', :params => {:c => 'c'} do |conn|
      conn.params = {'b' => 'b'}
    end
    assert_query_equal %w[b=b], get
  end

  def test_overrides_request_params
    create_connection
    query = get '?p=1&a=a', :p => 2
    assert_query_equal %w[a=a p=2], query
  end

  def test_overrides_request_params_block
    create_connection
    query = get '?p=1&a=a', :p => 2 do |req|
      req.params[:p] = 3
    end
    assert_query_equal %w[a=a p=3], query
  end

  def test_overrides_request_params_block_url
    create_connection
    query = get nil, :p => 2 do |req|
      req.url '?p=1&a=a', 'p' => 3
    end
    assert_query_equal %w[a=a p=3], query
  end

  def test_overrides_all_request_params
    create_connection :params => {:c => 'c'}
    query = get '?p=1&a=a', :p => 2 do |req|
      assert_equal 'a', req.params[:a]
      assert_equal 'c', req.params['c']
      assert_equal 2, req.params['p']
      req.params = {:b => 'b'}
      assert_equal 'b', req.params['b']
    end
    assert_query_equal %w[b=b], query
  end

  def test_array_params_in_url
    with_default_params_encoder(nil) do
      create_connection 'http://a.co/page1?color[]=red&color[]=blue'
      query = get
      assert_equal 'color%5B%5D=red&color%5B%5D=blue', query
    end
  end

  def test_array_params_in_params
    with_default_params_encoder(nil) do
      create_connection 'http://a.co/page1', :params => {:color => ['red', 'blue']}
      query = get
      assert_equal 'color%5B%5D=red&color%5B%5D=blue', query
    end
  end

  def test_array_params_in_url_with_flat_params
    with_default_params_encoder(Faraday::FlatParamsEncoder) do
      create_connection 'http://a.co/page1?color=red&color=blue'
      query = get
      assert_equal 'color=red&color=blue', query
    end
  end

  def test_array_params_in_params_with_flat_params
    with_default_params_encoder(Faraday::FlatParamsEncoder) do
      create_connection 'http://a.co/page1', :params => {:color => ['red', 'blue']}
      query = get
      assert_equal 'color=red&color=blue', query
    end
  end

  def test_params_with_connection_options
    encoder = Object.new
    def encoder.encode(params)
      params.map { |k,v| "#{k.upcase}-#{v.upcase}" }.join(',')
    end

    create_connection :params => {:color => 'red'}
    query = get('', :feeling => 'blue') do |req|
      req.options.params_encoder = encoder
    end
    assert_equal ['COLOR-RED', 'FEELING-BLUE'], query.split(',').sort
  end

  def get(*args)
    env = @conn.get(*args) do |req|
      yield(req) if block_given?
    end
    env[:url].query
  end
end