new gd2 test errors

[rurban]

@eserte has a fedora system with gd 2.3.2 and GD.t still fails with GD-2.74:.
2.73 works fine

#   Failed test 'unable to generate comparison image for test 1: Can't locate object method "newFromGd2" via package "GD::Image" at (eval 16) line 1.
# '
#   at t/GD.t line 259.
Can't locate object method "newFromGd2" via package "GD::Image" at t/GD.t line 80.
# Looks like your test exited with 255 just after 3.
t/GD.t .................... Dubious, test returned 255 (wstat 65280, 0xff00)
Failed 12/14 subtests 

[eserte]

This can be reproduced using the following Dockerfile

FROM fedora:34
RUN yum -y install perl-CPAN gcc perl-Test perl-Test-Simple
RUN yum -y install gd-devel
RUN cpan -t GD

and

docker build -t perl-test . && docker run perl-test

Test output:

# Testing gd 2.3.2 using gd2 support.

#   Failed test 'unable to generate comparison image for test 1: Can't locate object method "newFromGd2" via package "GD::Image" at (eval 16) line 1.
# '
#   at t/GD.t line 259.
Can't locate object method "newFromGd2" via package "GD::Image" at t/GD.t line 80.
# Looks like your test exited with 255 just after 3.
t/GD.t .................... 
Dubious, test returned 255 (wstat 65280, 0xff00)
Failed 12/14 subtests 

[hakonhagland]

@eserte Thanks for providing the Dockerfile. I am able to reproduce the error with docker, and I can see that the error occurs at line 94 :

my $tile = eval "GD::Image->newFrom${op}('$fn')" or die $@;

where the value of $op is Gd2 and the value of $fn is ./test_data/tile.gd2 (the file exists). However, the specific values of these variable seems to be unimportant. I tried replacing them with Png and ./test_data/tile.png (the file exists) and I get the same error:

 Can't locate object method "newFromPng" via package "GD::Image"

I wonder if the error can have something to do with the installation location of the shared library:

$ ldd blib/arch/auto/GD/GD.so  | grep libgd
	libgd.so.3 => /lib64/libgd.so.3 (0x00007f9274326000)

However cpan GD uses the default path in Makefile.PL, se line 203 of /usr/lib instead of /lib64

[rurban]

The image format selection in the test was still a hack. I'll change it the actual supported formats. Gif changed, GD changed and many formats depend if the support library was found or not.

[rurban]

Thanks for the reproducer!
I could fix it in devel, soon in 2.75

[rurban]

Merged