Go 运行单元测试时怎样传入命令行参数

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问题内容

我的 业务单元（需要被测试的单元）中依赖了另外一个包（以下简称

parser

parser

parser

init

flag.Parse

所有的 业务单元 需要用到命令行参数，直接从

parser

现在，我需要对那个依赖了 parser 包中变量的业务单元进行单元测试，在执行 go test 命令的时候自然而然会将 parser 包一起编译，所以当执行测试的时候，会先执行 parser 包的 init 函数进行命令行参数解析。

现在，问题就出在这里，我无法通过命令行将参数传递测试程序，应该怎样传递？

以下是我的尝试，都报错了：

flag provided but not defined: -test.timeout

➜  logger git:(master) ✗ go test logger.go logger_test.go -monitor-url=foo
flag provided but not defined: -test.timeout
Usage of /var/folders/s8/lrvd172x0_5bn35_lblgb0tm0000gn/T/go-build722317095/b001/logger.test:
  -debug-mode
        turn on debug mode
  -mail-from-addr string
        sender's mail address
  -mail-from-name string
        sender's name
  -mail-from-password string
        sender's smtp auth code
  -mail-smtp-auth-host string
        smtp auth host
  -mail-smtp-server-addr string
        smtp server addr
  -mail-to-addr string
        receiver's mail address
  -monitor-interval string
        milli second, testing cycle (default "20000")
  -monitor-respheader-timeout string
        milli second, timeout for waiting response header (default "2000")
  -monitor-total-timeout string
        milli second, timeout for waiting url response (default "5000")
  -monitor-url string
        the url for monitor
FAIL    command-line-arguments  0.450s
FAIL

➜  logger git:(master) ✗ go test logger.go logger_test.go -args -monitor-url=foo
flag provided but not defined: -test.timeout
Usage of /var/folders/s8/lrvd172x0_5bn35_lblgb0tm0000gn/T/go-build861303357/b001/logger.test:
  -debug-mode
        turn on debug mode
  -mail-from-addr string
        sender's mail address
  -mail-from-name string
        sender's name
  -mail-from-password string
        sender's smtp auth code
  -mail-smtp-auth-host string
        smtp auth host
  -mail-smtp-server-addr string
        smtp server addr
  -mail-to-addr string
        receiver's mail address
  -monitor-interval string
        milli second, testing cycle (default "20000")
  -monitor-respheader-timeout string
        milli second, timeout for waiting response header (default "2000")
  -monitor-total-timeout string
        milli second, timeout for waiting url response (default "5000")
  -monitor-url string
        the url for monitor
FAIL    command-line-arguments  0.313s
FAIL

➜  logger git:(master) ✗ go test logger.go logger_test.go -args monitor-url=foo 
flag provided but not defined: -test.timeout
Usage of /var/folders/s8/lrvd172x0_5bn35_lblgb0tm0000gn/T/go-build447796332/b001/logger.test:
  -debug-mode
        turn on debug mode
  -mail-from-addr string
        sender's mail address
  -mail-from-name string
        sender's name
  -mail-from-password string
        sender's smtp auth code
  -mail-smtp-auth-host string
        smtp auth host
  -mail-smtp-server-addr string
        smtp server addr
  -mail-to-addr string
        receiver's mail address
  -monitor-interval string
        milli second, testing cycle (default "20000")
  -monitor-respheader-timeout string
        milli second, timeout for waiting response header (default "2000")
  -monitor-total-timeout string
        milli second, timeout for waiting url response (default "5000")
  -monitor-url string
        the url for monitor
FAIL    command-line-arguments  0.094s
FAIL

正确答案

问题已解决，原因在于，

testing

flags

test.timeout

flag

flags

testing

flag.Parse

parser

init

flag.Parse

testing

flags

Parse

解决办法
分析执行测试时代码的执行顺序，只要保证在

Parse

testing

flags

flags

testing

flags

testing.Init()

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