test: add unit tests

handlers/annotations_test.go

@@ -0,0 +1,38 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/sirupsen/logrus"
+)
+
+func TestAnnotations(t *testing.T) {
+	url := "/61590/Black-star-respiration/The-new-moon-rode-high-in-the-crown-of-the-metropolis/annotations"
+
+	r, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	rr := httptest.NewRecorder()
+	l := logrus.New()
+	m := New(l)
+
+	m.ServeHTTP(rr, r)
+
+	defer rr.Result().Body.Close()
+
+	decoder := json.NewDecoder(rr.Result().Body)
+	annotation := map[string]string{}
+
+	if err := decoder.Decode(&annotation); err != nil {
+		t.Fatal(err)
+	}
+
+	if _, exists := annotation["html"]; !exists {
+		t.Fatalf("html field not found on annotation\n")
+	}
+}