- added comment support the postfix transform2() expression

[imager.git] / t / t58trans2.t

diff --git a/t/t58trans2.t b/t/t58trans2.t
index 1fcb570c26ab6d1638db92f86911191c4d454133..163570d221fccdad1f24b10dc2880f19e9e24147 100644 (file)
--- a/t/t58trans2.t
+++ b/t/t58trans2.t
@@ -1,13 +1,18 @@
-BEGIN { $| = 1; print "1..6\n"; }
+#!perl -w
+BEGIN { $| = 1; print "1..15\n"; }
 END {print "not ok 1\n" unless $loaded;}
 use Imager;
 
+sub ok($$);
+sub is($$$);
+my $num = 1;
+
 $loaded = 1;
-print "ok 1\n";
+ok(1, "loaded");
 
 #$Imager::DEBUG=1;
 
-Imager::init('log'=>'testout/t56trans2.log');
+Imager::init('log'=>'testout/t58trans2.log');
 
 my $im1 = Imager->new();
 $im1->open(file=>'testimg/penguin-base.ppm', type=>'pnm')
@@ -19,14 +24,14 @@ $im2->open(file=>'testimg/scale.ppm',type=>'pnm')
 # error handling
 my $opts = { rpnexpr=>'x x 10 / sin 10 * y + get1' };
 my $im3 = Imager::transform2($opts);
-print $im3 ? "not ok 2\n" : "ok 2\n";
-print defined($Imager::ERRSTR) ? "ok 3\n" : "not ok 3\n";
+ok(!$im3, "returned an image on error");
+ok(defined($Imager::ERRSTR), "No error message on failure");
 
 # image synthesis
 my $im4 = Imager::transform2({
        width=>300, height=>300,
        rpnexpr=>'x y cx cy distance !d y cy - x cx - atan2 !a @d 10 / @a + 3.1416 2 * % !a2 @a2 cy * 3.1416 / 1 @a2 sin 1 + 2 / hsv'});
-print $im4 ? "ok 4\n" : "not ok 4\n";
+ok($im4, "synthesis failed");
 
 if ($im4) {
   $im4->write(type=>'pnm', file=>'testout/t56a.ppm')
@@ -37,7 +42,7 @@ if ($im4) {
 my $im5 = Imager::transform2({
        rpnexpr=>'x x 10 / sin 10 * y + getp1'
 }, $im1);
-print $im5 ? "ok 5\n" : "not ok 5\n";
+ok($im5, "image distortion");
 if ($im5) {
   $im5->write(type=>'pnm', file=>'testout/t56b.ppm')
     || die "Cannot write testout/t56b.ppm";
@@ -48,8 +53,76 @@ $opts = {
 rpnexpr=>'x h / !rat x w2 % y h2 % getp2 !pat x y getp1 @rat * @pat 1 @rat - * +'
 };
 my $im6 = Imager::transform2($opts,$im1,$im2);
-print $im6 ? "ok 6\n" : "not ok 6 # $opts->{error}\n";
+ok($im6, "image combination");
 if ($im6) {
   $im6->write(type=>'pnm', file=>'testout/t56c.ppm')
     || die "Cannot write testout/t56c.ppm";
 }
+
+# alpha
+$opts = 
+  {
+   rpnexpr => '0 0 255 x y + w h + 2 - / 255 * rgba',
+   channels => 4,
+   width => 50,
+   height => 50,
+  };
+my $im8 = Imager::transform2($opts);
+ok($im8, "alpha output");
+my $c = $im8->getpixel(x=>0, 'y'=>0);
+is(($c->rgba)[3], 0, "zero alpha");
+$c = $im8->getpixel(x=>49, 'y'=>49);
+is(($c->rgba)[3], 255, "max alpha");
+
+use Imager::Transform;
+
+# some simple tests
+print "# Imager::Transform\n";
+my @funcs = Imager::Transform->list;
+ok(@funcs, "funcs");
+
+my $tran = Imager::Transform->new($funcs[0]);
+ok($tran, "got tranform");
+ok($tran->describe() eq Imager::Transform->describe($funcs[0]),
+   "description");
+# look for a function that takes inputs (at least one does)
+my @needsinputs = grep Imager::Transform->new($_)->inputs, @funcs;
+# make sure they're 
+my @inputs = Imager::Transform->new($needsinputs[0])->inputs;
+ok($inputs[0]{desc}, "input description");
+# at some point I might want to test the actual transformations
+
+# check lower level error handling
+my $im7 = Imager::transform2({rpnexpr=>'x y getp2', width=>100, height=>100});
+ok(!$im7, "expected failure on accessing invalid image");
+print "# ", Imager->errstr, "\n";
+ok(Imager->errstr =~ /not enough images/, "didn't get expected error");
+
+
+sub ok ($$) {
+  my ($test, $desc) = @_;
+
+  if ($test) {
+    print "ok $num # $desc\n";
+  }
+  else {
+    print "not ok $num # $desc\n";
+  }
+  ++$num;
+  $test;
+}
+
+sub is ($$$) {
+  my ($left, $right, $desc) = @_;
+
+  my $eq = $left == $right;
+  unless (ok($eq, $desc)) {
+    $left =~ s/\n/# \n/g;
+    $left =~ s/([^\n\x20-\x7E])/"\\x".sprintf("%02X", ord $1)/ge;
+    $right =~ s/\n/# \n/g;
+    $right =~ s/([^\n\x20-\x7E])/"\\x".sprintf("%02X", ord $1)/ge;
+    print "# not equal, left = '$left'\n";
+    print "# right = '$right'\n";
+  }
+  $eq;
+}