Update structure of img test from master

Originally from commit cdfb4ab "Run autopkgtest tests using autodep8 and
the pkg-perl team's infrastructure", cherry-picked here to be able to
apply subsequent test coverage extensions in this test.

diff --git a/t/img.t b/t/img.t
index 55cf05afc4df5e9c232b36111d594a52e34f370c..012373a79051b55aada0099c3d1a70c9baaeb035 100755 (executable)
--- a/t/img.t
+++ b/t/img.t
@@ -18,6 +18,22 @@ use Test::More;
 BEGIN { use_ok("IkiWiki"); }
 BEGIN { use_ok("Image::Magick"); }
 
+my $installed = $ENV{INSTALLED_TESTS};
+
+my @command;
+if ($installed) {
+       @command = qw(ikiwiki);
+}
+else {
+       ok(! system("make -s ikiwiki.out"));
+       @command = qw(perl -I. ./ikiwiki.out
+               --underlaydir=underlays/basewiki
+               --set underlaydirbase=underlays
+               --templatedir=templates);
+}
+
+push @command, qw(--set usedirs=0 --plugin img t/tmp/in t/tmp/out --verbose);
+
 my $magick = new Image::Magick;
 my $SVGS_WORK = defined $magick->QueryFormat("svg");
 
@@ -67,11 +83,7 @@ EOF
 );
 ok(utime(333333333, 333333333, "t/tmp/in/imgconversions.mdwn"));
 
-ok(! system("make -s ikiwiki.out"));
-
-my $command = "perl -I. ./ikiwiki.out -set usedirs=0 -templatedir=templates -plugin img t/tmp/in t/tmp/out -verbose";
-
-ok(! system($command));
+ok(! system(@command));
 
 sub size($) {
        my $filename = shift;
@@ -114,7 +126,7 @@ is(size("$outpath/x6-a:b:c:d:e:f:g:h:i:j.png"), "6x6");
 if (1) { # for easier testing
        writefile("imgconversions.mdwn", "t/tmp/in", "nothing to see here");
 
-       ok(! system("$command --refresh"));
+       ok(! system(@command, "--refresh"));
 
        ok(! -e "$outpath/10x-redsquare.png");
        ok(! -e "$outpath/10x-bluesquare.png");