feat(matrix): parse latest=true and tag=TAG in matrix query

lib/pact_broker/matrix/parse_query.rb

@@ -5,7 +5,14 @@ module Matrix
     class ParseQuery
       def self.call query
         params = Rack::Utils.parse_nested_query(query)
-        selectors = (params['q'] || []).collect{ |i| { pacticipant_name: i['pacticipant'], pacticipant_version_number: i['version'] } }
+        selectors = (params['q'] || []).collect do |i|
+          p = {}
+          p[:pacticipant_name] = i['pacticipant'] if i['pacticipant']
+          p[:pacticipant_version_number] = i['version'] if i['version']
+          p[:latest] = true if i['latest'] == 'true'
+          p[:tag] = i['tag'] if i['tag']
+          p
+        end
         options = {}
         if params.key?('success') && params['success'].is_a?(Array)
           options[:success] = params['success'].collect do | value |

spec/lib/pact_broker/matrix/parse_query_spec.rb

@@ -32,7 +32,7 @@ module Matrix
           let(:query) { "q[][wrong]=Foo&q[][blah]=1.2.3" }
 
           it "returns nil keys or values" do
-            expect(subject.first).to eq [{ pacticipant_name: nil, pacticipant_version_number: nil }]
+            expect(subject.first).to eq [{}]
           end
         end
 
@@ -73,6 +73,30 @@ module Matrix
             expect(subject.last).to eq(success: [nil])
           end
         end
+
+        context "when latest is true" do
+          let(:query) { "q[][pacticipant]=Foo&q[][latest]=true" }
+
+          it "returns a selector with latest true" do
+            expect(subject.first).to eq [{ pacticipant_name: 'Foo', latest: true }]
+          end
+        end
+
+        context "when latest is not true" do
+          let(:query) { "q[][pacticipant]=Foo&q[][latest]=false" }
+
+          it "returns a selector with no latest key" do
+            expect(subject.first).to eq [{ pacticipant_name: 'Foo' }]
+          end
+        end
+
+        context "when there is a tag" do
+          let(:query) { "q[][pacticipant]=Foo&q[][tag]=prod" }
+
+          it "returns a selector with a tag" do
+            expect(subject.first).to eq [{ pacticipant_name: 'Foo', tag: 'prod' }]
+          end
+        end
       end
     end
   end