Add not found handler

error/notfound.go

@@ -0,0 +1,18 @@
+package error
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// NotFound creates a gin middleware for handling page not found.
+func NotFound() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.JSON(http.StatusNotFound, &errorWrapper{
+			Error:            http.StatusText(http.StatusNotFound),
+			ErrorCode:        http.StatusNotFound,
+			ErrorDescription: "page not found",
+		})
+	}
+}

error/notfound_test.go

@@ -0,0 +1,18 @@
+package error
+
+import (
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+)
+
+func TestNotFound(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	rec := httptest.NewRecorder()
+	ctx, _ := gin.CreateTestContext(rec)
+
+	NotFound()(ctx)
+
+	assertJSONResponse(t, rec, 404, `{"errorCode":404, "errorDescription":"page not found", "error":"Not Found"}`)
+}

router/router.go

@@ -21,6 +21,7 @@ func Create(db *database.GormDatabase) (*gin.Engine, func()) {
 
 	g := gin.New()
 	g.Use(gin.Logger(), gin.Recovery(), error.Handler())
+	g.NoRoute(error.NotFound())
 
 	g.GET("/")