feat(ssl): allow single certificates to be uploaded

Fixes #194

lib/pact_broker/certificates/service.rb

@@ -25,7 +25,7 @@ def cert_store
 
       def find_all_certificates
         Certificate.collect do | certificate |
-          cert_arr = certificate.content.split(/(-----END [^\-]+-----)/).each_slice(2).map(&:join)
+          cert_arr = certificate.content.split(/(-----END [^\-]+-----)/).each_slice(2).map(&:join).map(&:strip).select{|s| !s.empty?}
           cert_arr.collect do |c|
             begin
               OpenSSL::X509::Certificate.new(c)

spec/lib/pact_broker/certificates/service_spec.rb

@@ -36,12 +36,21 @@ module Certificates
 
         subject { Service.find_all_certificates }
 
-        context "with a valid certificate file" do
+        context "with a valid certificate chain" do
           it "returns all the X509 Certificate objects" do
             expect(subject.size).to eq 2
           end
         end
 
+        context "with a valid CA file" do
+          let(:certificate_content) { File.read('spec/fixtures/certificates/cacert.pem') }
+
+          it "returns all the X509 Certificate objects" do
+            expect(PactBroker.logger).to_not receive(:error).with(/Error.*1234/)
+            expect(subject.size).to eq 1
+          end
+        end
+
         context "with an invalid certificate file" do
           let(:certificate_content) { File.read('spec/fixtures/certificate-invalid.pem') }