Go：类似于C的宏，用于编写测试代码

Question

When writing test code, I do a lot of this

if (!cond) {
    t.Fatal("error message")
}

It's a bit tedious. So I'd like to achieve the following

CHECK(cond, "error message")

So I attempted this

func CHECK(t *testing.T, cond bool, fmt string, a ...interface{}) {
  if !cond {
    t.Fatal(fmt, a)
  }
}

If it were a C macro it would've worked perfectly. But in Go, the line number where the failure is is wrong.

Is there a fix for this?

Answer 1

Sadly you can't do that.

A workaround would be to get the line / function yourself, something like the trace function from https://stackoverflow.com/a/25954534/145587.