Address edge case with table config param (#339)

lib/config/options.rb

@@ -112,7 +112,7 @@ def merge!(hash)
     end
 
     # Some keywords that don't play nicely with OpenStruct
-    SETTINGS_RESERVED_NAMES = %w[select collect test count zip min max exit!].freeze
+    SETTINGS_RESERVED_NAMES = %w[select collect test count zip min max exit! table].freeze
 
     # An alternative mechanism for property access.
     # This let's you do foo['bar'] along with foo.bar.
@@ -132,11 +132,11 @@ def []=(param, value)
     end
 
     def key?(key)
-      table.key?(key)
+      @table.key?(key)
     end
 
     def has_key?(key)
-      table.has_key?(key)
+      @table.has_key?(key)
     end
 
     def method_missing(method_name, *args)

spec/fixtures/reserved_keywords.yml

@@ -5,3 +5,4 @@ zip: cherry
 max: kumquat
 min: fig
 exit!: taro
+table: strawberry

spec/options_spec.rb

@@ -18,6 +18,7 @@
       expect(config.max).to eq('kumquat')
       expect(config.min).to eq('fig')
       expect(config.exit!).to eq('taro')
+      expect(config.table).to eq('strawberry')
     end
 
     it 'should allow to access them using [] operator' do
@@ -28,6 +29,7 @@
       expect(config['max']).to eq('kumquat')
       expect(config['min']).to eq('fig')
       expect(config['exit!']).to eq('taro')
+      expect(config['table']).to eq('strawberry')
 
       expect(config[:select]).to eq('apple')
       expect(config[:collect]).to eq('banana')
@@ -36,6 +38,26 @@
       expect(config[:max]).to eq('kumquat')
       expect(config[:min]).to eq('fig')
       expect(config[:exit!]).to eq('taro')
+      expect(config[:table]).to eq('strawberry')
+    end
+
+    context 'when empty' do
+      let(:config) do
+        Config.load_files("#{fixture_path}/empty1.yml")
+      end
+
+      it 'should allow to access them via object member notation' do
+        expect(config.select).to be_nil
+        expect(config.table).to be_nil
+      end
+
+      it 'should allow to access them using [] operator' do
+        expect(config['select']).to be_nil
+        expect(config['table']).to be_nil
+
+        expect(config[:select]).to be_nil
+        expect(config[:table]).to be_nil
+      end
     end
   end