[BUGFIX] fix avg + improve status db connection

http/status.go

@@ -13,10 +13,15 @@ func status(w http.ResponseWriter, r *http.Request) {
 	log := logger.HTTP(r)
 	var good []*models.Good
 	var count int64
-	var avg int64
+	var avg float64
 	database.Read.Find(&good).Count(&count) //.Avg(&avg)
+	database.Read.Raw("SELECT avg(g.gcount) as avg FROM (select count(*) as gcount FROM good g GROUP BY g.product_id) g").Row().Scan(&avg)
 	lib.Write(w, map[string]interface{}{
 		"status": "running",
+		"database": map[string]interface{}{
+			"read":  database.Read.DB().Ping() == nil,
+			"write": database.Write.DB().Ping() == nil,
+		},
 		"good": map[string]interface{}{
 			"count": count,
 			"avg":   avg,

http/status_test.go

@@ -4,6 +4,8 @@ import (
 	"net/http"
 	"testing"
 
+	"github.com/genofire/hs_master-kss-monolith/lib/database"
+	"github.com/genofire/hs_master-kss-monolith/models"
 	"github.com/genofire/hs_master-kss-monolith/test"
 )
 
@@ -13,12 +15,31 @@ func TestStatus(t *testing.T) {
 	BindAPI(router)
 	session := test.NewSession(router)
 
+	database.Write.Create(&models.Good{
+		ProductID: 3,
+		Comment:   "regal 1",
+	})
+	database.Write.Create(&models.Good{
+		ProductID: 3,
+		Comment:   "regal 2",
+	})
+	database.Write.Create(&models.Good{
+		ProductID: 1,
+		Comment:   "regal 10",
+	})
+
 	r, w := session.JSONRequest("GET", "/api/status", nil)
 	result := r.(map[string]interface{})
 	assertion.Equal(http.StatusOK, w.StatusCode)
 	assertion.Equal("running", result["status"])
+
+	db := result["database"].(map[string]interface{})
+	assertion.Equal(true, db["read"])
+	assertion.Equal(true, db["write"])
+
 	good := result["good"].(map[string]interface{})
-	assertion.Equal(float64(0), good["count"])
+	assertion.Equal(float64(3), good["count"])
+	assertion.Equal(float64(1.5), good["avg"])
 
 	test.Close()
 }