Cleanup of img_dir and testing of input_file.rb

lib/squib/api/image.rb

@@ -28,12 +28,12 @@ module Squib
     # @return [nil] Returns nil
     # @api public
     def png(opts = {})
+      Dir.chdir(img_dir) do
         range = Args::CardRange.new(opts[:range], deck_size: size)
         paint = Args::Paint.new(custom_colors).load!(opts, expand_by: size, layout: layout)
         box   = Args::Box.new(self, {width: :native, height: :native}).load!(opts, expand_by: size, layout: layout, dpi: dpi)
         trans = Args::Transform.new.load!(opts, expand_by: size, layout: layout, dpi: dpi)
         ifile = Args::InputFile.new.load!(opts, expand_by: size, layout: layout, dpi: dpi)
-      Dir.chdir(img_dir) do
         @progress_bar.start('Loading PNG(s)', range.size) do |bar|
           range.each do |i|
             @cards[i].png(ifile[i].file, box[i], paint[i], trans[i])
@@ -68,13 +68,13 @@ module Squib
     # @return [nil] Returns nil
     # @api public
     def svg(opts = {})
+      Dir.chdir(img_dir) do
         range = Args::CardRange.new(opts[:range], deck_size: size)
         paint = Args::Paint.new(custom_colors).load!(opts, expand_by: size, layout: layout)
         box   = Args::Box.new(self, {width: :native, height: :native}).load!(opts, expand_by: size, layout: layout, dpi: dpi)
         trans = Args::Transform.new.load!(opts, expand_by: size, layout: layout, dpi: dpi)
         ifile = Args::InputFile.new.load!(opts, expand_by: size, layout: layout, dpi: dpi)
         svg_args = Args::SvgSpecial.new.load!(opts, expand_by: size, layout: layout, dpi: dpi)
-      Dir.chdir(img_dir) do
         @progress_bar.start('Loading SVG(s)', range.size) do |bar|
           range.each do |i|
             if svg_args.render?(i)

lib/squib/args/arg_loader.rb

@@ -12,6 +12,7 @@ module Squib
 
       # Main class invoked by the client (i.e. api/ methods)
       def load!(args, expand_by: 1, layout: {}, dpi: 300)
+        Squib.logger.debug { "ARG LOADER: load! for #{self.class}, args: #{args}" }
         @dpi = dpi
         args[:layout] = prep_layout_args(args[:layout], expand_by: expand_by)
         expand_and_set_and_defaultify(args: args, by: expand_by, layout: layout)

samples/custom_config.rb

@@ -9,7 +9,7 @@ Squib::Deck.new(config: 'custom-config.yml') do
        font: 'Arial 72', align: :center
 
   # Progress bars are shown for these commands
-  # And images are taken from config-imgdir
+  # And images are taken from img_dir, not the cwd.
   png file: 'shiny-purse2.png', x: 620, y: 75
   svg file: 'spanner2.svg', x: 620, y: 218
   save_png prefix: 'custom-config_'

spec/args/input_file_spec.rb

@@ -0,0 +1,21 @@
+require 'spec_helper'
+require 'squib/args/input_file'
+
+describe Squib::Args::InputFile do
+  subject(:ifile) {Squib::Args::InputFile.new}
+
+  context 'validate_file' do
+
+    it 'allows a file if it exists' do
+      args = {file: __FILE__} # I code therefore I am.
+      ifile.load!(args, expand_by: 1)
+      expect(ifile).to have_attributes(file: [File.expand_path(__FILE__)])
+    end
+
+    it 'raises on non-existent file' do
+      args = {file: 'foo.rb'}
+      expect { ifile.load!(args, expand_by: 1) }.to raise_error
+    end
+
+  end
+end