feat: ent update fields.

entgo/update/update_test.go

@@ -0,0 +1,28 @@
+package update
+
+import (
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func TestBuildSetNullUpdate(t *testing.T) {
+	t.Run("MySQL_Set2", func(t *testing.T) {
+		s := sql.Dialect(dialect.MySQL).Update("users")
+
+		BuildSetNullUpdate(s, []string{"id", "username"})
+		query, args := s.Query()
+		require.Equal(t, "UPDATE `users` SET `id` = NULL, `username` = NULL", query)
+		require.Empty(t, args)
+
+	})
+	t.Run("PostgreSQL_Set2", func(t *testing.T) {
+		s := sql.Dialect(dialect.Postgres).Update("users")
+
+		BuildSetNullUpdate(s, []string{"id", "username"})
+		query, args := s.Query()
+		require.Equal(t, `UPDATE "users" SET "id" = NULL, "username" = NULL`, query)
+		require.Empty(t, args)
+	})
+}