feat(run single interaction): allow env vars to be set to run a singl…

…e interaction

Set PACT_DESCRIPTION and PACT_PROVIDER_STATE to run a specific interaction instead of the full pact

lib/pact/provider_verifier/app.rb

@@ -94,6 +94,9 @@ def verify_pact pact_url
             :pact_broker_username => @options.broker_username,
             :pact_broker_password => @options.broker_password
           }
+          options[:description] = ENV['PACT_DESCRIPTION'] if ENV['PACT_DESCRIPTION']
+          options[:provider_state] = ENV['PACT_PROVIDER_STATE'] if ENV['PACT_PROVIDER_STATE']
+
           Cli::RunPactVerification.call(options)
         rescue SystemExit => e
           puts ""

spec/integration_spec.rb

@@ -18,7 +18,7 @@
     end
   end
 
-  context "with two passing pacts" do
+  context "with two passing interactions" do
 
     subject { `bundle exec bin/pact-provider-verifier -a 1.0.100 --provider-base-url http://localhost:4567 --pact-urls ./test/me-they.json,./test/another-they.json --provider_states_setup_url http://localhost:4567/provider-state -v` }
     it "exits with a 0 exit code" do
@@ -58,6 +58,20 @@
     end
   end
 
+  context "running verification with filtered interactions" do
+
+    subject { `PACT_DESCRIPTION="Provider state success" PACT_PROVIDER_STATE="There is a greeting" bundle exec bin/pact-provider-verifier -a 1.0.100 --provider-base-url http://localhost:4567 --pact-urls ./test/me-they.json --provider_states_setup_url http://localhost:4567/provider-state -v` }
+
+    it "exits with a 0 exit code" do
+      subject
+      expect($?).to eq 0
+    end
+
+    it "the output contains a message indicating that the interactions have been filtered" do
+      expect(subject).to match /Filtering interactions by.*Provider state success.*There is a greeting/
+    end
+  end
+
 
   after(:all) do
     Process.kill 'KILL', @pipe.pid