--- /dev/null
+#!/usr/bin/perl
+#
+# unit test that creates test images (png, svg, multi-page pdf), runs ikiwiki
+# on them, checks the resulting images for plausibility based on their image
+# sizes, and checks if they vanish when not required in the build process any
+# more
+#
+# if you have trouble here, be aware that there are three debian packages that
+# can provide Image::Magick: perlmagick, libimage-magick-perl and
+# graphicsmagick-libmagick-dev-compat
+#
+package IkiWiki;
+
+use warnings;
+use strict;
+use Test::More;
+plan(skip_all => "Image::Magick not available")
+ unless eval q{use Image::Magick; 1};
+
+use IkiWiki;
+
+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 $magick = new Image::Magick;
+
+$magick->Read("t/img/twopages.pdf");
+my $PDFS_WORK = defined $magick->Get("width");
+
+ok(! system("rm -rf t/tmp; mkdir -p t/tmp/in"));
+
+ok(! system("cp t/img/redsquare.png t/tmp/in/redsquare.png"));
+ok(! system("cp t/img/redsquare.jpg t/tmp/in/redsquare.jpg"));
+ok(! system("cp t/img/redsquare.jpg t/tmp/in/redsquare.jpeg"));
+# colons in filenames are a corner case for img
+ok(! system("cp t/img/redsquare.png t/tmp/in/hello:world.png"));
+ok(! system("cp t/img/redsquare.png t/tmp/in/a:b:c.png"));
+ok(! system("cp t/img/redsquare.png t/tmp/in/a:b:c:d.png"));
+ok(! system("cp t/img/redsquare.png t/tmp/in/a:b:c:d:e:f:g:h:i:j.png"));
+
+writefile("bluesquare.svg", "t/tmp/in",
+ '<svg width="30" height="30"><rect x="0" y="0" width="30" height="30" fill="blue"/></svg>');
+ok(! system("cp t/tmp/in/bluesquare.svg t/tmp/in/really-svg.png"));
+ok(! system("cp t/tmp/in/bluesquare.svg t/tmp/in/really-svg.bmp"));
+ok(! system("cp t/tmp/in/bluesquare.svg t/tmp/in/really-svg.pdf"));
+
+# using different image sizes for different pages, so the pagenumber selection can be tested easily
+ok(! system("cp t/img/twopages.pdf t/tmp/in/twopages.pdf"));
+ok(! system("cp t/img/twopages.pdf t/tmp/in/really-pdf.jpeg"));
+ok(! system("cp t/img/twopages.pdf t/tmp/in/really-pdf.jpg"));
+ok(! system("cp t/img/twopages.pdf t/tmp/in/really-pdf.png"));
+ok(! system("cp t/img/twopages.pdf t/tmp/in/really-pdf.svg"));
+
+my $maybe_pdf_img = "";
+if ($PDFS_WORK) {
+ $maybe_pdf_img = <<EOF;
+[[!img twopages.pdf size=12x]]
+[[!img twopages.pdf size=16x pagenumber=1]]
+EOF
+}
+
+writefile("imgconversions.mdwn", "t/tmp/in", <<EOF
+[[!img redsquare.png]]
+[[!img redsquare.jpg size=11x]]
+[[!img redsquare.jpeg size=12x]]
+[[!img redsquare.png size=10x]]
+[[!img redsquare.png size=30x50]] expecting 30x30
+[[!img hello:world.png size=x8]] expecting 8x8
+[[!img a:b:c.png size=x4]]
+[[!img a:b:c:d:e:f:g:h:i:j.png size=x6]]
+[[!img bluesquare.svg size=42x]] expecting 42x
+[[!img bluesquare.svg size=x43]] expecting x43
+[[!img bluesquare.svg size=42x43]] expecting 42x43 because aspect rario not preserved
+$maybe_pdf_img
+
+# bad ideas
+[[!img really-svg.png size=666x]]
+[[!img really-svg.bmp size=666x]]
+[[!img really-svg.pdf size=666x]]
+[[!img really-pdf.jpeg size=666x]]
+[[!img really-pdf.jpg size=666x]]
+[[!img really-pdf.png size=666x]]
+[[!img really-pdf.svg size=666x]]
+EOF
+);
+ok(utime(333333333, 333333333, "t/tmp/in/imgconversions.mdwn"));
+
+ok(! system(@command, '--set-yaml', 'img_allowed_formats=[JPEG, PNG, svg, pdf]'));
+
+sub size($) {
+ my $filename = shift;
+ my $im = Image::Magick->new();
+ my $r = $im->Read(":$filename");
+ return "no image" if $r;
+ my $w = $im->Get("width");
+ my $h = $im->Get("height");
+ return "${w}x${h}";
+}
+
+my $outpath = "t/tmp/out/imgconversions";
+my $outhtml = readfile("$outpath.html");
+
+is(size("$outpath/10x-redsquare.png"), "10x10");
+ok(! -e "$outpath/30x-redsquare.png");
+ok($outhtml =~ /width="30" height="30".*expecting 30x30/);
+ok($outhtml =~ /width="42".*expecting 42x/);
+ok($outhtml =~ /height="43".*expecting x43/);
+ok($outhtml =~ /width="42" height="43".*expecting 42x43/);
+
+SKIP: {
+ skip "PDF support not installed (try ghostscript)", 2
+ unless $PDFS_WORK;
+ is(size("$outpath/12x-twopages.png"), "12x12");
+ is(size("$outpath/16x-p1-twopages.png"), "16x2");
+}
+
+ok($outhtml =~ /width="8" height="8".*expecting 8x8/);
+is(size("$outpath/x8-hello:world.png"), "8x8");
+is(size("$outpath/x4-a:b:c.png"), "4x4");
+is(size("$outpath/x6-a:b:c:d:e:f:g:h:i:j.png"), "6x6");
+
+is(size("$outpath/11x-redsquare.jpg"), "11x11");
+is(size("$outpath/12x-redsquare.jpeg"), "12x12");
+like($outhtml, qr{src="(\./)?imgconversions/11x-redsquare\.jpg" width="11" height="11"});
+like($outhtml, qr{src="(\./)?imgconversions/12x-redsquare\.jpeg" width="12" height="12"});
+
+# We do not misinterpret images
+my $quot = qr/(?:"|")/;
+like($outhtml, qr/${quot}really-svg\.png${quot} does not seem to be a valid png file/);
+ok(! -e "$outpath/666x-really-svg.png");
+ok(! -e "$outpath/666x-really-svg.bmp");
+like($outhtml, qr/${quot}really-pdf\.jpeg${quot} does not seem to be a valid jpeg file/);
+ok(! -e "$outpath/666x-really-pdf.jpeg");
+like($outhtml, qr/${quot}really-pdf\.jpg${quot} does not seem to be a valid jpeg file/);
+ok(! -e "$outpath/666x-really-pdf.jpg");
+like($outhtml, qr/${quot}really-pdf\.png${quot} does not seem to be a valid png file/);
+ok(! -e "$outpath/666x-really-pdf.png");
+
+# disable support for uncommon formats and try again
+ok(! system(@command, "--rebuild"));
+ok(! -e "$outpath/10x-bluesquare.png");
+ok(! -e "$outpath/12x-twopages.png");
+ok(! -e "$outpath/16x-p1-twopages.png");
+
+# now let's remove them again
+
+if (1) { # for easier testing
+ writefile("imgconversions.mdwn", "t/tmp/in", "nothing to see here");
+
+ ok(! system(@command, "--refresh"));
+
+ ok(! -e "$outpath/10x-redsquare.png");
+ ok(! -e "$outpath/10x-bluesquare.png");
+ ok(! -e "$outpath/12x-twopages.png");
+ ok(! -e "$outpath/16x-p1-twopages.png");
+ ok(! -e "$outpath/x8-hello:world.png");
+ ok(! -e "$outpath/x4-a:b:c.png");
+ ok(! -e "$outpath/x6-a:b:c:d:e:f:g:h:i:j.png");
+
+ # cleanup
+ ok(! system("rm -rf t/tmp"));
+}
+done_testing;
+
+1;
