diff --git a/helper/Makefile b/helper/Makefile
new file mode 100644
index 0000000..0096486
--- /dev/null
+++ b/helper/Makefile
@@ -0,0 +1,23 @@
+# dev env https://www.dtm.pub/other/develop.html
+all: fmt lint test_all cover_test
+.PHONY: all
+
+fmt:
+	@gofmt -s -w ./
+
+lint:
+	@golangci-lint run
+
+.PHONY: test
+test:
+	@go test ./...
+
+test_all:
+	TEST_STORE=redis go test ./...
+	TEST_STORE=boltdb go test ./...
+	TEST_STORE=mysql go test ./...
+	TEST_STORE=postgres go test ./...
+
+cover_test:
+	./helper/test-cover.sh
+