v2 flexible matching

You can now use regular expressions and type based matching between JVM and Ruby consumers and providers! Also new in v2 matching is the ability to specify flexible length arrays. For example:

animal_service.given("an alligator named Mary exists").
  upon_receiving("a request for an alligator").
  with(
    method: "get",
    path: "/alligators/Mary", 
    headers: {"Accept" => "application/json"}).
  will_respond_with(
    status: 200,
    headers: {"Content-Type" => "application/json"},
    body: {
      name: "Mary",
      children: each_like(name: "Fred", age: 2)
    })

When the provider verification is run, it will ensure that each of the elements in the children array has a String name, an Integer age, and that there is at least one element in the array.

To turn the v2 Pact serialisation on, you will need version 1.9.0 of the pact gem, and to configure the pact_specification_version in the mock service configuration in the consumer. The provider will pick it up automatically.

require 'pact/consumer/rspec'

Pact.service_consumer "Zoo App" do
  has_pact_with "Animal Service" do
    mock_service :animal_service do
      port 1234
      pact_specification_version "2.0.0"
    end
  end
end

To start the standalone pact mock service in v2 matching mode, specify --pact-specification-version 2.0.0 in the startup options.