refactor platform logic and add gasorder domain

backend/api/internal/logic/platform/dashboard_test.go

@@ -0,0 +1,30 @@
+package platform
+
+import (
+	"regexp"
+	"testing"
+
+	"git.apinb.com/heqiapp/platforms/backend/api/internal/models"
+	"github.com/DATA-DOG/go-sqlmock"
+)
+
+func TestDashboardOverviewReturnsZeroValuesForAnEmptyDatabase(t *testing.T) {
+	_, mock := setupPlatformRoleDatabase(t)
+	for _, query := range []string{
+		`SELECT count\(\*\) FROM "gas_basic" WHERE status = \$1`,
+		`SELECT count\(\*\) FROM "delivery_basic" WHERE status = \$1`,
+		`SELECT count\(\*\) FROM "staff_account" WHERE work_status = \$1`,
+		`SELECT count\(\*\) FROM "user_account" WHERE status = \$1`,
+	} {
+		mock.ExpectQuery(regexp.MustCompile(query).String()).WithArgs(sqlmock.AnyArg()).WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(0))
+	}
+
+	overview, err := models.GetDashboardOverview()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if overview != (models.DashboardOverview{}) {
+		t.Fatalf("empty dashboard = %#v, want zero values", overview)
+	}
+	assertMockExpectations(t, mock)
+}