1 files changed, 47 insertions, 0 deletions
diff --git a/qa/tasks/contracts.rake b/qa/tasks/contracts.rake
new file mode 100644
index 00000000000..682ec0e2e21
--- /dev/null
+++ b/qa/tasks/contracts.rake
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require 'pact/tasks/verification_task'
+
+contracts = File.expand_path('../contracts', __dir__)
+provider = File.expand_path('provider', contracts)
+
+# rubocop:disable Rails/RakeEnvironment
+namespace :contracts do
+  namespace :mr do
+    Pact::VerificationTask.new(:metadata) do |pact|
+      pact.uri(
+        "#{contracts}/contracts/merge_request_page-merge_request_metadata_endpoint.json",
+        pact_helper: "#{provider}/spec/metadata_helper.rb"
+      )
+    end
+
+    Pact::VerificationTask.new(:discussions) do |pact|
+      pact.uri(
+        "#{contracts}/contracts/merge_request_page-merge_request_discussions_endpoint.json",
+        pact_helper: "#{provider}/spec/discussions_helper.rb"
+      )
+    end
+
+    Pact::VerificationTask.new(:diffs) do |pact|
+      pact.uri(
+        "#{contracts}/contracts/merge_request_page-merge_request_diffs_endpoint.json",
+        pact_helper: "#{provider}/spec/diffs_helper.rb"
+      )
+    end
+
+    desc 'Run all merge request contract tests'
+    task 'test:merge_request', :contract_mr do |_t, arg|
+      raise(ArgumentError, 'Merge request contract tests require contract_mr to be set') unless arg[:contract_mr]
+
+      ENV['CONTRACT_MR'] = arg[:contract_mr]
+      errors = %w[metadata discussions diffs].each_with_object([]) do |task, err|
+        Rake::Task["contracts:mr:pact:verify:#{task}"].execute
+      rescue StandardError, SystemExit
+        err << "contracts:mr:pact:verify:#{task}"
+      end
+
+      raise StandardError, "Errors in tasks #{errors.join(', ')}" unless errors.empty?
+    end
+  end
+end
+# rubocop:enable Rails/RakeEnvironment