From 9a9ba02d85dbd735998fac95dba66365d4df9ef8 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Mon, 8 Dec 2014 20:14:04 +0100
Subject: Bugfix: infill was not correctly generated when infill_every_layers
 was used along with raft_layers. Includes regression test. #2396

---
 t/combineinfill.t | 67 ++++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 47 insertions(+), 20 deletions(-)

(limited to 't/combineinfill.t')

diff --git a/t/combineinfill.t b/t/combineinfill.t
index 62e22e6b2..5b51899ee 100644
--- a/t/combineinfill.t
+++ b/t/combineinfill.t
@@ -11,37 +11,64 @@ use List::Util qw(first);
 use Slic3r;
 use Slic3r::Test;
 
-plan tests => 2;
+plan tests => 6;
 
 {
+    my $test = sub {
+        my ($config) = @_;
+        
+        my $print = Slic3r::Test::init_print('20mm_cube', config => $config);
+        ok my $gcode = Slic3r::Test::gcode($print), "infill_every_layers does not crash";
+        
+        my $tool = undef;
+        my %layers = ();        # layer_z => 1
+        my %layer_infill = ();  # layer_z => has_infill
+        Slic3r::GCode::Reader->new->parse($gcode, sub {
+            my ($self, $cmd, $args, $info) = @_;
+            
+            if ($cmd =~ /^T(\d+)/) {
+                $tool = $1;
+            } elsif ($cmd eq 'G1' && $info->{extruding} && $info->{dist_XY} > 0 && $tool != $config->support_material_extruder-1) {
+                $layer_infill{$self->Z} //= 0;
+                if ($tool == $config->infill_extruder-1) {
+                    $layer_infill{$self->Z} = 1;
+                }
+            }
+            $layers{$args->{Z}} = 1 if $cmd eq 'G1' && $info->{dist_Z} > 0;
+        });
+        
+        my $layers_with_perimeters = scalar(keys %layer_infill);
+        my $layers_with_infill = grep $_ > 0,  values %layer_infill;
+        is scalar(keys %layers), $layers_with_perimeters+$config->raft_layers, 'expected number of layers';
+        
+        # first infill layer is never combined, so we don't consider it
+        $layers_with_infill--;
+        $layers_with_perimeters--;
+        
+        # we expect that infill is generated for half the number of combined layers
+        # plus for each single layer that was not combined (remainder)
+        is $layers_with_infill,
+            int($layers_with_perimeters/$config->infill_every_layers) + ($layers_with_perimeters % $config->infill_every_layers),
+            'infill is only present in correct number of layers';
+    };
+    
     my $config = Slic3r::Config->new_from_defaults;
+    $config->set('gcode_comments', 1);
     $config->set('layer_height', 0.2);
     $config->set('first_layer_height', 0.2);
     $config->set('nozzle_diameter', [0.5]);
     $config->set('infill_every_layers', 2);
+    $config->set('perimeter_extruder', 1);
     $config->set('infill_extruder', 2);
+    $config->set('support_material_extruder', 3);
+    $config->set('support_material_interface_extruder', 3);
     $config->set('top_solid_layers', 0);
     $config->set('bottom_solid_layers', 0);
-    my $print = Slic3r::Test::init_print('20mm_cube', config => $config);
-    ok my $gcode = Slic3r::Test::gcode($print), "infill_every_layers does not crash";
+    $test->($config);
     
-    my $tool = undef;
-    my %layer_infill = ();  # layer_z => has_infill
-    Slic3r::GCode::Reader->new->parse($gcode, sub {
-        my ($self, $cmd, $args, $info) = @_;
-        
-        if ($cmd =~ /^T(\d+)/) {
-            $tool = $1;
-        } elsif ($cmd eq 'G1' && $info->{extruding} && $info->{dist_XY} > 0) {
-            $layer_infill{$self->Z} //= 0;
-            if ($tool == $config->infill_extruder-1) {
-                $layer_infill{$self->Z} = 1;
-            }
-        }
-    });
-    my $layers_with_infill = grep $_,  values %layer_infill;
-    $layers_with_infill--; # first layer is never combined
-    is $layers_with_infill, scalar(keys %layer_infill)/2, 'infill is only present in correct number of layers';
+    $config->set('skirts', 0);  # prevent usage of perimeter_extruder in raft layers
+    $config->set('raft_layers', 5);
+    $test->($config);
 }
 
 # the following needs to be adapted to the new API
-- 
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