feat: test that NoopListener gets added

nooplistener.go

@@ -1,31 +1,28 @@
 package unleash
 
-// DebugListener is an implementation of all of the listener interfaces that simply logs
-// debug info to stdout. It is meant for debugging purposes and an example of implementing
-// the listener interfaces.
+// NoopListener is an implementation of all of the listener interfaces that discards
+// all messages. It's added if no other listener is added to drain the channels and as
+// an example of implementing the listener interfaces.
 type NoopListener struct{}
 
-/*
-// OnError prints out errors.
 func (l NoopListener) OnError(err error) {
 }
 
-// OnWarning prints out warning.
 func (l NoopListener) OnWarning(warning error) {
 }
 
-// OnReady prints to the console when the repository is ready.
+// The repository is ready.
 func (l NoopListener) OnReady() {
 }
 
-// OnCount prints to the console when the feature is queried.
+// The feature is queried.
 func (l NoopListener) OnCount(name string, enabled bool) {
 }
-// OnSent prints to the console when the server has uploaded metrics.
+
+// The server has uploaded metrics.
 func (l NoopListener) OnSent(payload MetricsData) {
 }
 
-// OnRegistered prints to the console when the client has registered.
+// The client has registered.
 func (l NoopListener) OnRegistered(payload ClientData) {
 }
-*/

nooplistener_test.go

@@ -0,0 +1,24 @@
+package unleash
+
+import (
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_defaultsToNoopListener(t *testing.T) {
+	result := Initialize(
+		WithAppName("my-application"),
+		WithUrl("http://localhost:4242"),
+		WithCustomHeaders(http.Header{"Authorization": {"*:development.code"}}),
+	)
+
+	if result != nil {
+		t.Fail()
+	}
+	res := IsEnabled("test", WithFallback(false))
+	assert.Equal(t, false, res)
+
+	assert.IsType(t, &NoopListener{}, defaultClient.errorListener)
+}