pollyjs config is undefined when reusing ember build and running ember test

Hello pollyjs contributors and devs, I am not sure if this is a bug report or a question 😃

TL;DR

pollyjs config from consuming ember app is not available inside the polly js addon methods, when reusing the build, which happens when running the command, ember test --path <build folder name>

Description

I am using pollyjs/@ember package for my ember project, and it works just fine, when I run the tests using the command, ember test.

But when I try to reuse an existing build of my ember project(ember test --path <build folder name. by default, 'dist'>), I run into this error in command line:

Cannot read property 'enabled' of undefined

Stack Trace and Error Report: /var/folders/l3/zfkk52zd2qsdh8lbhdz6gy1r000lf7/T/error.dump.466e5463069e16ef55ccda6970db9a12.log

On further looking into the logs and debugging the ember node process, the error was happening in the testemMiddleware() method in the @pollyjs/ember/index.js file as show below:

testemMiddleware(app) {
    if (this._config.enabled) { // <== `this._config` is undefined here
      registerExpressAPI(app, this._config.server);
    }
  },

And the root cause seems to be that pollyjs this.app.options.pollyjs config defined and retrieved from the consuming ember app into the addon, is available only in the included() hook; but not available inside the other methods.

Error Message & Stack Trace

stack: TypeError: Cannot read property 'enabled' of undefined
    at Class.testemMiddleware (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/@pollyjs/ember/index.js:45:22)
    at middlewares.forEach.middleware (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/testem/lib/server/index.js:183:9)
    at Array.forEach (<anonymous>)
    at Server.injectMiddleware (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/testem/lib/server/index.js:182:19)
    at Server.createExpress (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/testem/lib/server/index.js:133:10)
    at Server.start (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/testem/lib/server/index.js:41:10)
    at App.startServer (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/testem/lib/app.js:231:24)
    at App.getServer (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/testem/lib/app.js:235:17)
    at Bluebird.using (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/testem/lib/app.js:74:38)
    at tryCatcher (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/util.js:16:23)
    at /Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/using.js:185:26
    at tryCatcher (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise.js:517:31)
    at Promise._settlePromise (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise.js:574:18)
    at Promise._settlePromise0 (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise.js:619:10)
    at Promise._settlePromises (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise.js:699:18)
    at Promise._fulfill (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise.js:643:18)
    at PromiseArray._resolve (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise_array.js:126:19)
    at PromiseArray._promiseFulfilled (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise_array.js:144:14)
    at Promise._settlePromise (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise.js:579:26)
    at Promise._settlePromise0 (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise.js:619:10)
    at Promise._settlePromises (/Users/shsridha/workspace/srd-backstop/gryphon-fe/node_modules/bluebird/js/release/promise.js:699:18)

Config

Defined inside the ember-cli-build.js

pollyjs: {
      enabled: EmberApp.env() !== 'production',
      server: {
        expiresIn: null,
        keepUnusedRequests: false
      }
    },

Environment

Node.js v10.15.0
darwin 18.7.0
6.4.1
1.15.2

[offirgolan]

@shankarsridhar released under v3.0.0

[jasonmit]

Yup, looks related. I can work around it but will wait to see how the above progresses first. Thanks for linking the issues.