Add support for proxy usernames/passwords

lib/jira/client.rb

@@ -26,6 +26,8 @@ module JIRA
   #   :auth_type          => :oauth,
   #   :proxy_address      => nil,
   #   :proxy_port         => nil,
+  #   :proxy_username     => nil,
+  #   :proxy_password     => nil,
   #   :additional_cookies => nil,
   #   :default_headers    => {}
   #

lib/jira/http_client.rb

@@ -43,7 +43,7 @@ def basic_auth_http_conn
 
     def http_conn(uri)
       if @options[:proxy_address]
-        http_class = Net::HTTP::Proxy(@options[:proxy_address], @options[:proxy_port] || 80)
+        http_class = Net::HTTP::Proxy(@options[:proxy_address], @options[:proxy_port] || 80, @options[:proxy_username], @options[:proxy_password])
       else
         http_class = Net::HTTP
       end

spec/jira/http_client_spec.rb

@@ -59,6 +59,16 @@
     { username: 'donaldduck', password: 'supersecret' }
   end
 
+  let(:proxy_client) do
+    options = JIRA::Client::DEFAULT_OPTIONS.merge(JIRA::HttpClient::DEFAULT_OPTIONS).merge(
+      proxy_address: 'proxyAddress',
+      proxy_port: 42,
+      proxy_username: 'proxyUsername',
+      proxy_password: 'proxyPassword'
+    )
+    JIRA::HttpClient.new(options)
+  end
+
   let(:response) do
     response = double('response')
     allow(response).to receive(:kind_of?).with(Net::HTTPSuccess).and_return(true)
@@ -229,6 +239,36 @@
     expect(custom_ssl_version_client.http_conn(uri)).to eq(http_conn)
   end
 
+  it 'sets up a non-proxied http connection by default' do
+    uri = double
+    host = double
+    port = double
+
+    expect(uri).to receive(:host).and_return(host)
+    expect(uri).to receive(:port).and_return(port)
+
+    proxy_configuration = basic_client.http_conn(uri).class
+    expect(proxy_configuration.proxy_address).to be_nil
+    expect(proxy_configuration.proxy_port).to be_nil
+    expect(proxy_configuration.proxy_user).to be_nil
+    expect(proxy_configuration.proxy_pass).to be_nil
+  end
+
+  it 'sets up a proxied http connection when using proxy options' do
+    uri = double
+    host = double
+    port = double
+
+    expect(uri).to receive(:host).and_return(host)
+    expect(uri).to receive(:port).and_return(port)
+
+    proxy_configuration = proxy_client.http_conn(uri).class
+    expect(proxy_configuration.proxy_address).to eq(proxy_client.options[:proxy_address])
+    expect(proxy_configuration.proxy_port).to eq(proxy_client.options[:proxy_port])
+    expect(proxy_configuration.proxy_user).to eq(proxy_client.options[:proxy_username])
+    expect(proxy_configuration.proxy_pass).to eq(proxy_client.options[:proxy_password])
+  end
+
   it 'can use client certificates' do
     http_conn = double
     uri = double