Cleanup and tests of yaml method

spec/api/api_data_spec.rb

@@ -169,4 +169,44 @@ describe Squib::Deck do
     end
 
   end
+
+  context '#yaml' do
+    it 'loads basic data' do
+      expect(Squib.yaml(file: yaml_file('basic.yml')).to_h).to eq({
+        'Name'           => %w(Larry Curly Mo),
+        'Number' => [4.0, 5.0, 6.0], # numbers get auto-converted to integers
+        })
+    end
+
+    it 'explodes quantities' do
+     expect(Squib.yaml(explode: 'qty', file: yaml_file('qty.yml')).to_h).to eq({
+        'name' => %w(ha ha he),
+        'qty'  => [2, 2, 1],
+        })
+    end
+
+    it 'handles silence' do
+     expect(Squib.yaml(file: yaml_file('nilly.yml')).to_h).to eq({
+        'name' => %w(foo bar),
+        'desc'  => [nil, 'Hello'],
+        })
+    end
+
+    it 'yields to block when given' do
+      data = Squib.yaml(file: yaml_file('basic.yml')) do |header, value|
+        case header
+        when 'Name'
+          'he'
+        when 'Number'
+          value * 2
+        else
+          'ha'
+        end
+      end
+      expect(data.to_h).to eq({
+        'Name'   => %w(he he he),
+        'Number' => [8.0, 10.0, 12.0],
+        })
+    end
+  end
 end