List observations.

api/handler.go

@@ -49,6 +49,7 @@ func Handler() *mux.Router {
 
 	m.Get(router.Observation).Handler(handler(serveObservation))
 	m.Get(router.CreateObservation).Handler(handler(serveCreateObservation))
+	m.Get(router.Observations).Handler(handler(serveObservationList))
 
 	return m
 }

api/observations.go

@@ -40,3 +40,20 @@ func serveCreateObservation(w http.ResponseWriter, r *http.Request) error {
 
 	return writeJSON(w, observation)
 }
+
+func serveObservationList(w http.ResponseWriter, r *http.Request) error {
+	var opt models.ObservationListOptions
+	if err := schemaDecoder.Decode(&opt, r.URL.Query()); err != nil {
+		return err
+	}
+
+	observations, err := store.Observations.List(&opt)
+	if err != nil {
+		return err
+	}
+	if observations == nil {
+		observations = []*models.Observation{}
+	}
+
+	return writeJSON(w, observations)
+}

api/observations_test.go

@@ -65,3 +65,32 @@ func TestObservation_Create(t *testing.T) {
 		t.Error("!success")
 	}
 }
+
+func TestObservation_List(t *testing.T) {
+	setup()
+
+	want := []*models.Observation{newObservation()}
+	wantOpt := &models.ObservationListOptions{ListOptions: models.ListOptions{Page: 1, PerPage: 10}}
+
+	calledList := false
+	store.Observations.(*models.MockObservationsService).List_ = func(opt *models.ObservationListOptions) ([]*models.Observation, error) {
+		if !normalizeDeepEqual(wantOpt, opt) {
+			t.Errorf("wanted options %d but got %d", wantOpt, opt)
+		}
+		calledList = true
+		return want, nil
+	}
+
+	observations, err := apiClient.Observations.List(wantOpt)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !calledList {
+		t.Error("!calledList")
+	}
+
+	if !normalizeDeepEqual(&want, &observations) {
+		t.Errorf("got observations %+v but wanted observations %+v", observations, want)
+	}
+}