diff --git a/mite/mite_test.go b/mite/mite_test.go
new file mode 100644
index 0000000..517d163
--- /dev/null
+++ b/mite/mite_test.go
@@ -0,0 +1,46 @@
+package mite
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+func TestUnmarshalTimeTracking(t *testing.T) {
+	trackerOn := []byte(`
+{
+	"tracker": {
+	  "tracking_time_entry": {
+		"id": 36135321,
+		"minutes": 247,
+		"since": "2015-10-15T17:05:04+02:00"
+	  }
+	}
+  }`)
+	trackerOff := []byte(`{
+  "tracker": {}
+}`)
+	off := apiTimeTrackerEntry{}
+	err := json.Unmarshal(trackerOff, &off)
+	if err != nil {
+		t.Error(err)
+	} else {
+		if off.TimeTrackerHolder.TrackingTimeEntry != nil {
+			t.Error("expected nil, but is not")
+		}
+	}
+
+	on := apiTimeTrackerEntry{}
+	err = json.Unmarshal(trackerOn, &on)
+	if err != nil {
+		t.Error(err)
+	} else {
+		if on.TimeTrackerHolder.TrackingTimeEntry == nil {
+			t.Error("expected note nil, but is not")
+		} else {
+			if on.TimeTrackerHolder.TrackingTimeEntry.ID != 36135321 {
+				t.Error("bad unmarshal?")
+			}
+		}
+	}
+
+}