Re: Relative path in test file

$0 contains the name of the program as it was invoked. In your test cases, $0 will be:

perl t/mytest.t
# t/mytest.t
[download]

perl mytest.t
# mytest.t
[download]

So, if you want to open the file relative to your main program, use a path relative to $0. The FindBin module does that already, so you can just use that:

use FindBin;
my $datafile = "$FindBin::Bin/data/test.txt";
open my $fh, $datafile
    or die "Couldn't open '$datafile': $!";
[download]

Comment on Re: Relative path in test file Select or Download Code

Replies are listed 'Best First'.
Re^2: Relative path in test file by ikegami (Patriarch) on Jul 07, 2022 at 19:12 UTC
Whever it makes a difference, `$FindBin::RealBin` is better than `$FindBin::Bin`. So might as well always use it.	[reply] [d/l] [select]
Re^3: Relative path in test file by Anonymous Monk on Jul 07, 2022 at 20:35 UTC
Whever it makes a difference, $FindBin::RealBin is better than $FindBin::Bin. why?	[reply]
Re^4: Relative path in test file by ikegami (Patriarch) on Jul 11, 2022 at 00:57 UTC
Because $RealBin works in those circumstances, and $Bin doesn't. Worse, $Bin can cause the wrong code to be executed, and this could result if a privilege escalation. Those circumstances being the use of a link to the script.	[reply]