Added GET / (empty) test

msgbus_test.go

@@ -1,6 +1,8 @@
 package msgbus
 
 import (
+	"net/http"
+	"net/http/httptest"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -45,6 +47,18 @@ func TestMessageBusPutGet(t *testing.T) {
 	assert.Equal(t, actual, expected)
 }
 
+func TestServeHTTPGETEmpty(t *testing.T) {
+	assert := assert.New(t)
+
+	mb := New(nil)
+	w := httptest.NewRecorder()
+	r, _ := http.NewRequest("GET", "/", nil)
+
+	mb.ServeHTTP(w, r)
+	assert.Equal(w.Code, http.StatusOK)
+	assert.Equal(w.Body.String(), "{}")
+}
+
 func BenchmarkMessageBusPut(b *testing.B) {
 	mb := New(nil)
 	topic := mb.NewTopic("foo")