feat: ensure latest pact version is returned when searching by pact v…

…ersion sha

lib/pact_broker/pacts/repository.rb

@@ -103,13 +103,20 @@ def find_latest_pact(consumer_name, provider_name, tag = nil)
       end
 
       def find_pact consumer_name, consumer_version, provider_name, pact_version_sha = nil
-        query = pact_version_sha ? AllPactPublications.pact_version_sha(pact_version_sha) : LatestPactPublicationsByConsumerVersion
+        query = if pact_version_sha
+          AllPactPublications
+            .pact_version_sha(pact_version_sha)
+            .reverse_order(:consumer_version_order)
+            .limit(1)
+        else
+          LatestPactPublicationsByConsumerVersion
+        end
         query = query
           .eager(:tags)
           .consumer(consumer_name)
           .provider(provider_name)
         query = query.consumer_version_number(consumer_version) if consumer_version
-        query.limit(1).collect(&:to_domain_with_content)[0]
+        query.collect(&:to_domain_with_content)[0]
       end
 
       def find_all_revisions consumer_name, consumer_version, provider_name

spec/lib/pact_broker/pacts/repository_spec.rb

@@ -347,15 +347,32 @@ module Pacts
         context "with a pact_version_sha" do
           subject  { Repository.new.find_pact "Consumer", nil, "Provider", pact.pact_version_sha }
 
-          it "finds the pact with the given version and revision" do
+          it "finds the pact with the given pact_version_sha" do
             expect(subject.pact_version_sha).to eq pact.pact_version_sha
             expect(subject.consumer.name).to eq "Consumer"
             expect(subject.provider.name).to eq "Provider"
             expect(subject.consumer_version_number).to eq "1.2.4"
             expect(subject.revision_number).to eq 2
 
           end
+          context "when there are multiple pact publications for the pact version" do
+            before do
+              # Double check the data is set up correctly...
+              expect(pact_1.pact_version_sha).to eq(pact_2.pact_version_sha)
+            end
+
+            let(:td) { TestDataBuilder.new }
+            let!(:pact_1) { td.create_pact_with_hierarchy("Foo", "1", "Bar").and_return(:pact) }
+            let!(:pact_2) { td.create_consumer_version("2").create_pact(json_content: pact_1.json_content).and_return(:pact) }
+
+            subject  { Repository.new.find_pact "Foo", nil, "Bar", pact_1.pact_version_sha }
+
+            it "returns the latest pact, ordered by consumer version order" do
+              expect(subject.consumer_version_number).to eq "2"
+            end
+          end
         end
+
       end
 
       describe "find_all_revisions" do