add utils_test

Makefile

@@ -3,7 +3,7 @@ BIN     := bin
 CLIENT  := ${BIN}/client
 GOPATH  ?= ${PWD}
 
-all: client
+all: test client
 
 client: ${CLIENT}
 
@@ -11,6 +11,9 @@ ${CLIENT}: ${SRC}
 	@echo build $@
 	@GOPATH=${GOPATH} go build -o $@ -- main/client.go
 
+test:
+	@GOPATH=${GOPATH} go test
+
 clean:
 	@echo clean ${BIN}
 	@rm -f ${BIN}/*