Tests for initHumanUsers and initinitRobotUsers.

Change the Cluster class in the process to implelement Teams API
calls and Oauth token fetches as interfaces, so that we can mock
them in the tests.

pkg/cluster/cluster.go

@@ -71,10 +71,11 @@ type Cluster struct {
 	deleteOptions    *metav1.DeleteOptions
 	podEventsQueue   *cache.FIFO
 
-	teamsAPIClient *teams.API
-	KubeClient     k8sutil.KubernetesClient //TODO: move clients to the better place?
-	currentProcess spec.Process
-	processMu      sync.RWMutex
+	teamsAPIClient   teams.Interface
+	oauthTokenGetter OAuthTokenGetter
+	KubeClient       k8sutil.KubernetesClient //TODO: move clients to the better place?
+	currentProcess   spec.Process
+	processMu        sync.RWMutex
 }
 
 type compareStatefulsetResult struct {
@@ -112,9 +113,10 @@ func New(cfg Config, kubeClient k8sutil.KubernetesClient, pgSpec spec.Postgresql
 		deleteOptions:    &metav1.DeleteOptions{OrphanDependents: &orphanDependents},
 		podEventsQueue:   podEventsQueue,
 		KubeClient:       kubeClient,
-		teamsAPIClient:   teams.NewTeamsAPI(cfg.OpConfig.TeamsAPIUrl, logger),
 	}
 	cluster.logger = logger.WithField("pkg", "cluster").WithField("cluster-name", cluster.clusterName())
+	cluster.teamsAPIClient = teams.NewTeamsAPI(cfg.OpConfig.TeamsAPIUrl, logger)
+	cluster.oauthTokenGetter = NewSecretOauthTokenGetter(&kubeClient, cfg.OpConfig.OAuthTokenSecretName)
 	cluster.patroni = patroni.New(cluster.logger)
 
 	return cluster