tmpdir

Documentation

Overview

Package tmpdir is a TESTING-ONLY utility.

Some tests directly or indirectly exercising the directory/explicitfilepath subpackage expect the path returned by ioutil.TempDir to be canonical in the directory/explicitfilepath sense (absolute, no symlinks, cleaned up).

ioutil.TempDir uses $TMPDIR by default, and on macOS, $TMPDIR is by default set to /var/folders/…, with /var a symlink to /private/var , which does not match our expectations. So, tests which want to use ioutil.TempDir that way, can import _ "github.com/containesr/image/internal/testing/explicitfilepath-tmpdir" to ensure that $TMPDIR is canonical and usable as a base for testing path canonicalization in its subdirectories.

NEVER use this in non-testing subpackages!