add some default options for test envs

Fixes #55.

addon/services/apollo.js

@@ -52,14 +52,25 @@ function newDataFunc(observable, resultKey, resolve) {
  };
 }
 
+// used in environments without injected `config:environment` (i.e. unit tests):
+const defaultOptions = {
+ apiURL: "http://testserver.example/v1/graph",
+};
+
 export default Service.extend({
  client: null,
  apiURL: alias('options.apiURL'),
 
  // options are configured in your environment.js.
  options: computed(function() {
- const config = getOwner(this).resolveRegistration('config:environment');
- return config.apollo;
+ // config:environment not injected into tests, so try to handle that gracefully.
+ let config = getOwner(this).resolveRegistration("config:environment");
+ if (config && config.apollo) {
+ return config.apollo;
+ } else if (testing) {
+ return defaultOptions;
+ }
+ throw new Error("no Apollo service options defined");
  }),
 
  init() {