pact-mock_server 500 "No interaction found ..."

[Michael Hargiss]

I'm using the pact (1.9.4) gem which uses pact-mock_service (0.10.2). I don't understand this 500 error message from the pact-mock_server:

Features API

  GET

D, [2016-10-14T17:24:34.771306 #21948] DEBUG -- : Calling API: FeaturesApi.features_get ...

  Trying ::1...

Connected to localhost (::1) port 1234 (#0)

GET /api/features?quiz_id=1 HTTP/1.1

Host: localhost:1234

User-Agent: Swagger-Codegen/1.0.0/ruby

Content-Type: application/json

Accept: application/json

HTTP/1.1 500 Internal Server Error

Content-Type: application/json

Server: WEBrick/1.3.1 (Ruby/2.3.1/2016-04-26)

Date: Fri, 14 Oct 2016 21:24:34 GMT

Content-Length: 89

Connection: Keep-Alive

Connection #0 to host localhost left intact

D, [2016-10-14T17:24:34.775727 #21948] DEBUG -- : HTTP response body ~BEGIN~

{"message":"No interaction found for GET /api/features?quiz_id=1","interaction_diffs":[]}

My test:

require_relative '../pact_helper'

RSpec.describe 'Features API', pact: true do

  let(:config) do

    config = SwaggerClient::Configuration.new

    config.scheme = 'http'

    config.base_path = '/api'

    config.host = 'localhost:1234'

    config.timeout = 5

    config.debugging = true

    config.verify_ssl = false

    config.verify_ssl_host = false

    config

  end

  let(:client) { SwaggerClient::ApiClient.new(config) }

  subject { SwaggerClient::FeaturesApi.new(client) }

  describe 'GET' do

    let(:opts) { { quiz_id: 1 } }

    let(:setup) do

      quiz_api.given('a quiz with features')

              .upon_receiving('a request for the quiz\'s features')

              .with(method: :get, path: '/features', query: opts)

              .will_respond_with(

                status: 200,

                headers: { 'Content-Type' => 'application/json' }

              )

    end

    # TODO: define spec

    it 'returns the features for the quiz' do

      # features = []

      # expect(subject.features_get(opts)).to eq(features)

      result = subject.features_get(opts)

      p result

    end

  end

end

I've used Pact successfully on other projects.

It seems the POST /interactions is failing. Any ideas or suggestions for debugging?

[Matt Fellows]

It looks like your expectation is to receive a GET on '/features' when it should be '/api/features', so pact is complaining that it got a message that wasn't expected.

i.e. I think it should be:

.with(method: :get, path: '/api/features', query: opts)

[Michael Hargiss]

Same result  :/

[Matt Fellows]

Are you able to post the pact logs or even a runnable gist for us? I think you're right in that perhaps the interactions aren't being registered.

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[Michael Hargiss]

pact.log:

I, [2016-10-15T08:12:03.978996 #27363]  INFO -- : Starting app Quiz API #<Pact::MockService::App:0x007f9d76f62aa0> on port 1234...

I, [2016-10-15T08:12:04.094271 #27363]  INFO -- : Started on port 1234

I, [2016-10-15T08:12:04.121629 #27363]  INFO -- : Clearing all expectations

I, [2016-10-15T08:12:04.129746 #27363]  INFO -- : Verifying interactions for Features API GET returns the features for the quiz

D, [2016-10-15T08:12:04.135901 #27363] DEBUG -- : Supposed to be stopping

quiz_api_mock_service.log:

I, [2016-10-15T08:12:04.124551 #27363]  INFO -- : Cleared interactions before example "Features API GET returns the features for the quiz"

I, [2016-10-15T08:12:04.128838 #27363]  INFO -- : Received request GET /api/features?quiz_id=1

D, [2016-10-15T08:12:04.128954 #27363] DEBUG -- : {

  "path": "/api/features",

  "query": "quiz_id=1",

  "method": "get",

  "headers": {

    "Content-Type": "application/json",

    "Host": "localhost:1234",

    "User-Agent": "Swagger-Codegen/1.0.0/ruby",

    "Accept": "application/json",

    "Version": "HTTP/1.1"

  }

}

E, [2016-10-15T08:12:04.128995 #27363] ERROR -- : No matching interaction found for GET /api/features?quiz_id=1

E, [2016-10-15T08:12:04.129007 #27363] ERROR -- : Interaction diffs for that route:

E, [2016-10-15T08:12:04.129016 #27363] ERROR -- : 

W, [2016-10-15T08:12:04.132299 #27363]  WARN -- : Verifying - actual interactions do not match expected interactions for example "Features API GET returns the features for the quiz". 

Unexpected requests:

GET /api/features?quiz_id=1

W, [2016-10-15T08:12:04.132323 #27363]  WARN -- : Unexpected requests:

GET /api/features?quiz_id=1

I, [2016-10-15T08:12:04.135378 #27363]  INFO -- : Writing pact with details {:consumer=>{:name=>"Swagger Client - Ruby"}, :provider=>{:name=>"Quiz API"}, :pactfile_write_mode=>"overwrite", :pact_dir=>"pacts/"}

I'll put together a gist. Thanks!

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[Matt Fellows]

Yeah, something is not configured correctly (possibly pact_helper.rb). You should see a line somewhere to the following effect:

"Registered expected interaction GET /api/features?quiz_id=1"

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Matt Fellows
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[Michael Hargiss]

You're both right and Beth nailed it. I forgot the bang. Tunnel vision
is real, folks. :)

Thank you so much!

> Yeah, something is not configured correctly (possibly pact_helper.rb). You should see a line somewhere to the following effect: "Registered expected interaction GET /api/features?quiz_id=1" To unsubscribe from this group and stop receiving emails from it, send an email to pact-support...@googlegroups.com.

[Michael Hargiss]

You're both right and Beth nailed it. The setup code wasn't getting called. I forgot the bang:

let!(:setup)

Tunnel vision is real, folks.  :)

Thank you so much!

[Matt Fellows]

Great to hear! :)