I'm making a package to make API calls to a service.
I have a test package that I use just to test the API calls and test the functions of the main package which I just include the other package into.
In my main package that I'm working on I have
ioutil.ReadFile(filepath.Abs("Filename.pub"))
Which is ok, but when I call it from my test package e.g.
/Users/####/gocode/src/github.com/testfolder go run main.go
it tells me
panic: open /Users/####/gocode/src/github.com/testfolder/public.pub: no such file or directory
The problem is, is it is looking for public.pub inside of testfolder instead of github.com/apipackage/ which is where it is.
Just to clarify this mess of words:
The API Package has a function that reads from the same directory
But because I'm including the API package and Testfolder is the CWD when I go run main.go it is instead trying to get it from the testfolder instead even though the main.go doesn't have the function and is just including it.
runtime.Caller is what you want I believe.
Here is a demonstration :
package main
import (
"fmt"
"runtime"
"path"
)
func main() {
_, filename, _, ok := runtime.Caller(0)
if !ok {
panic("No caller information")
}
fmt.Printf("Filename : %q, Dir : %q
", filename, path.Dir(filename))
}