Add specs for regexp filters

lib/mutant/filter/attribute.rb

@@ -20,6 +20,28 @@ module Mutant
         object.public_send(attribute_name)
       end
 
+      # Regexp based attribute filter
+      class Regexp < self
+
+        # Test for match
+        #
+        # @param [Object] object
+        #
+        # @return [true]
+        #   if attribute value matches expectation
+        #
+        # @return [false]
+        #   otherwise
+        #
+        # @api private
+        #
+        def match?(object)
+          !!(expectation =~ value(object))
+        end
+
+      end # Regexp
+
+      # Equality based attribute filter
       class Equality < self
 
         # Test for match
@@ -35,7 +57,7 @@ module Mutant
         # @api private
         #
         def match?(object)
-          value(object).eql?(value)
+          expectation.eql?(value(object))
         end
 
         PATTERN = /\A(code):([a-f0-9]{1,6})\z/.freeze
@@ -58,7 +80,7 @@ module Mutant
           new(match[1].to_sym, match[2])
         end
 
-      end # Code
+      end # Equality
     end # Attribute
   end # Filter
 end # Mutant

spec/unit/mutant/filter_spec.rb

@@ -12,6 +12,8 @@ filter_helpers = proc do
       end
     end
   end
+
+  subject { object.match?(item) }
 end
 
 describe Mutant::Filter::Whitelist do
@@ -21,8 +23,6 @@ describe Mutant::Filter::Whitelist do
 
   describe '#match?' do
 
-    subject { object.match?(item) }
-
     context 'with empty whitelist' do
       let(:whitelist) { [] }
 
@@ -57,8 +57,6 @@ describe Mutant::Filter::Blacklist do
 
   describe '#match?' do
 
-    subject { object.match?(item) }
-
     context 'with empty whitelist' do
       let(:whitelist) { [] }
 
@@ -90,4 +88,46 @@ describe Mutant::Filter::Attribute::Equality do
   instance_eval(&filter_helpers)
 
   let(:object) { described_class.new(attribute_name, expected_value) }
+  let(:item)   { double('Item', attribute_name => actual_value)      }
+
+  let(:attribute_name) { :foo    }
+  let(:expected_value) { 'value' }
+
+  describe '#match?' do
+
+    context 'not matching' do
+      let(:actual_value) { 'other-value' }
+      it { should be(false) }
+    end
+
+    context 'matching' do
+      let(:actual_value) { 'value' }
+      it { should be(true) }
+    end
+
+  end
+end
+
+describe Mutant::Filter::Attribute::Regexp do
+  instance_eval(&filter_helpers)
+
+  let(:object) { described_class.new(attribute_name, expectation) }
+  let(:item)   { double('Item', attribute_name => actual_value)   }
+
+  let(:attribute_name) { :foo    }
+  let(:expectation)    { /\Avalue\z/ }
+
+  describe '#match?' do
+
+    context 'not matching' do
+      let(:actual_value) { 'other-value' }
+      it { should be(false) }
+    end
+
+    context 'matching' do
+      let(:actual_value) { 'value' }
+      it { should be(true) }
+    end
+
+  end
 end