implement P4

5 files changed, 81 insertions, 0 deletions

diff --git a/t/P1.t b/t/P1.t
index 9e0bf14..030634b 100644
--- a/t/P1.t
+++ b/t/P1.t
@@ -54,4 +54,10 @@ P3
 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
 IMAGE
 
+is($image->as_string('P4') . "\n", <<IMAGE);
+P4
+6 8
+\x00\x30\x48\x84\xfc\x84\x84\x00
+IMAGE
+
 done_testing;
diff --git a/t/P2.t b/t/P2.t
index e7b7fdc..6ff8a29 100644
--- a/t/P2.t
+++ b/t/P2.t
@@ -54,4 +54,10 @@ P3
 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255
 IMAGE
 
+is($image->as_string('P4') . "\n", <<IMAGE);
+P4
+6 8
+\x00\x30\x48\x84\xfc\x84\x84\x00
+IMAGE
+
 done_testing;
diff --git a/t/P3.t b/t/P3.t
index fd55b8d..925b2d7 100644
--- a/t/P3.t
+++ b/t/P3.t
@@ -54,4 +54,10 @@ P3
 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255
 IMAGE
 
+is($image->as_string('P4') . "\n", <<IMAGE);
+P4
+6 8
+\x00\x30\x48\x84\xfc\x84\x84\x00
+IMAGE
+
 done_testing;
diff --git a/t/P4.t b/t/P4.t
new file mode 100644
index 0000000..9655658
--- /dev/null
+++ b/t/P4.t
@@ -0,0 +1,63 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+use Test::More;
+
+use Image::PNM;
+
+my $image = Image::PNM->new('t/data/P4.pbm');
+
+is($image->width, 6);
+is($image->height, 8);
+is($image->max_pixel_value, 1);
+is_deeply($image->raw_pixel(1, 2), [0, 0, 0]);
+is_deeply($image->pixel(4, 1), [0, 0, 0]);
+
+is($image->as_string('P1'), <<IMAGE);
+P1
+6 8
+0 0 0 0 0 0
+0 0 1 1 0 0
+0 1 0 0 1 0
+1 0 0 0 0 1
+1 1 1 1 1 1
+1 0 0 0 0 1
+1 0 0 0 0 1
+0 0 0 0 0 0
+IMAGE
+
+is($image->as_string('P2'), <<IMAGE);
+P2
+6 8
+1
+1 1 1 1 1 1
+1 1 0 0 1 1
+1 0 1 1 0 1
+0 1 1 1 1 0
+0 0 0 0 0 0
+0 1 1 1 1 0
+0 1 1 1 1 0
+1 1 1 1 1 1
+IMAGE
+
+is($image->as_string('P3'), <<IMAGE);
+P3
+6 8
+1
+1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
+1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1
+1 1 1 0 0 0 1 1 1 1 1 1 0 0 0 1 1 1
+0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0
+0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0
+0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0
+1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
+IMAGE
+
+is($image->as_string('P4') . "\n", <<IMAGE);
+P4
+6 8
+\x00\x30\x48\x84\xfc\x84\x84\x00
+IMAGE
+
+done_testing;
diff --git a/t/data/P4.pbm b/t/data/P4.pbm
new file mode 100644
index 0000000..3512376
--- /dev/null
+++ b/t/data/P4.pbm