feat(monkeypatch): allow a ruby file to be loaded in order to perform…

… at monkeypatch

lib/pact/provider_verifier/app.rb

@@ -47,6 +47,7 @@ def set_environment_variables
         ENV['PROVIDER_STATES_SETUP_URL'] = options.provider_states_setup_url
         ENV['VERBOSE_LOGGING'] = options.verbose if options.verbose
         ENV['CUSTOM_PROVIDER_HEADER'] = custom_provider_headers_for_env_var if custom_provider_headers_for_env_var
+        ENV['MONKEYPATCH'] = options.monkeypatch.join("\n") if options.monkeypatch && options.monkeypatch.any?
       end
 
       def configure_service_provider

lib/pact/provider_verifier/cli/verify.rb

@@ -15,6 +15,7 @@ class Verify < CustomThor
         method_option :broker_username, aliases: "-n", desc: "Pact Broker basic auth username", :required => false
         method_option :broker_password, aliases: "-p", desc: "Pact Broker basic auth password", :required => false
         method_option :custom_provider_header, type: :array, banner: 'CUSTOM_PROVIDER_HEADER', desc: "Header to add to provider state set up and pact verification requests. eg 'Authorization: Basic cGFjdDpwYWN0'. May be specified multiple times.", :required => false
+        method_option :monkeypatch, hide: true, type: :array, :required => false
         method_option :verbose, aliases: "-v", desc: "Verbose output", :required => false
         method_option :provider_states_url, aliases: "-s", :required => false, hide: true
         method_option :format, banner: "FORMATTER", aliases: "-f", desc: "RSpec formatter. Defaults to custom Pact formatter. [j]son may also be used."

lib/pact/provider_verifier/pact_helper.rb

@@ -11,3 +11,14 @@
   config.provider_state_set_up = Pact::ProviderVerifier::SetUpProviderState
   config.provider_state_tear_down = -> (*args){ }
 end
+
+if ENV['MONKEYPATCH']
+  ENV['MONKEYPATCH'].split("\n").each do | file |
+    $stdout.puts "DEBUG: Requiring monkeypatch file #{file}" if ENV['VERBOSE_LOGGING']
+    begin
+      require file
+    rescue LoadError => e
+      $stderr.puts "ERROR: #{e.class} - #{e.message}. Ensure you have specified the absolute path."
+    end
+  end
+end

spec/integration_with_monkeypatch_spec.rb

@@ -0,0 +1,24 @@
+describe "pact-provider-verifier with monkeypatch" do
+  before(:all) do
+    @pipe = IO.popen({}, %w{bundle exec rackup -p 4870 spec/support/config.ru})
+    sleep 2
+  end
+
+  subject { `bundle exec bin/pact-provider-verifier ./test/me-they.json --monkeypatch #{Dir.pwd}/spec/support/monkeypatch.rb --monkeypatch #{Dir.pwd}/spec/support/another_monkeypatch.rb -a 1.0.100 --provider-base-url http://localhost:4870 --provider_states_setup_url http://localhost:4870/provider-state 2>&1` }
+
+  it "exits with a 0 exit code" do
+    subject
+    puts subject
+    expect($?).to eq 0
+  end
+
+  it "loads the monkeypatch file" do
+    expect(subject).to include "THIS IS A MONKEYPATCHING FILE!!!"
+    expect(subject).to include "THIS IS ANOTHER MONKEYPATCHING FILE!!!"
+  end
+
+
+  after(:all) do
+    Process.kill 'KILL', @pipe.pid
+  end
+end

spec/support/another_monkeypatch.rb

@@ -0,0 +1 @@
+puts "THIS IS ANOTHER MONKEYPATCHING FILE!!!"

spec/support/monkeypatch.rb

@@ -0,0 +1 @@
+puts "THIS IS A MONKEYPATCHING FILE!!!"