Resolved #214. Added tests for this case. small refacroting

.rubocop.yml

@@ -6,3 +6,11 @@ Metrics/LineLength:
 #http://viget.com/extend/just-use-double-quoted-ruby-strings
 Style/StringLiterals:
   EnforcedStyle: double_quotes
+
+# Configuration parameters: CountComments.
+Metrics/ClassLength:
+    Enabled: false
+
+# Configuration parameters: CountComments.
+Metrics/MethodLength:
+    Enabled: false

.rubocop_todo.yml

@@ -1,5 +1,5 @@
 # This configuration was generated by `rubocop --auto-gen-config`
-# on 2015-05-25 17:16:04 +0300 using RuboCop version 0.31.0.
+# on 2015-05-26 16:00:55 +0300 using RuboCop version 0.31.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -7,22 +7,12 @@
 
 # Offense count: 14
 Metrics/AbcSize:
-  Max: 57
-
-# Offense count: 4
-# Configuration parameters: CountComments.
-Metrics/ClassLength:
-  Max: 182
+  Max: 59
 
 # Offense count: 1
 Metrics/CyclomaticComplexity:
   Max: 7
 
-# Offense count: 22
-# Configuration parameters: CountComments.
-Metrics/MethodLength:
-  Max: 84
-
 # Offense count: 1
 Metrics/PerceivedComplexity:
   Max: 8

lib/github_changelog_generator/generator/generator_tags.rb

@@ -37,7 +37,11 @@ module GitHubChangelogGenerator
     #
     # @return [Array]
     def get_filtered_tags(all_tags)
-      all_tags = all_tags
+      filtered_tags = filter_between_tags(all_tags)
+      filter_excluded_tags(filtered_tags)
+    end
+
+    def filter_between_tags(all_tags)
       filtered_tags = all_tags
       if @options[:between_tags]
         @options[:between_tags].each do |tag|
@@ -49,5 +53,18 @@ module GitHubChangelogGenerator
       end
       filtered_tags
     end
+
+    def filter_excluded_tags(all_tags)
+      filtered_tags = all_tags
+      if @options[:exclude_tags]
+        @options[:exclude_tags].each do |tag|
+          unless all_tags.include? tag
+            puts "Warning: can't find tag #{tag}, specified with --between-tags option.".yellow
+          end
+        end
+        filtered_tags = all_tags.reject { |tag| @options[:exclude_tags].include? tag }
+      end
+      filtered_tags
+    end
   end
 end

lib/github_changelog_generator/parser.rb

@@ -84,9 +84,12 @@ module GitHubChangelogGenerator
         opts.on("--exclude-labels  x,y,z", Array, 'Issues with the specified labels will be always excluded from changelog. Default is \'duplicate,question,invalid,wontfix\'') do |list|
           options[:exclude_labels] = list
         end
-        opts.on("--between-tags  x,y,z", Array, "Change log will be filed only between specified tags") do |list|
+        opts.on("--between-tags  x,y,z", Array, "Change log will be filled only between specified tags") do |list|
           options[:between_tags] = list
         end
+        opts.on("--exclude-tags  x,y,z", Array, "Change log will be exclude specified tags") do |list|
+          options[:exclude_tags] = list
+        end
         opts.on("--max-issues [NUMBER]", Integer, "Max number of issues to fetch from GitHub. Default is unlimited") do |max|
           options[:max_issues] = max
         end

spec/unit/generator/generator_tags_spec.rb

@@ -1,5 +1,5 @@
 describe GitHubChangelogGenerator::Generator do
-  describe "#get_filtered_tags" do
+  describe "#filter_between_tags" do
     context "when between_tags nil" do
       before do
         @generator = GitHubChangelogGenerator::Generator.new(between_tags: nil)
@@ -45,4 +45,25 @@ describe GitHubChangelogGenerator::Generator do
       it { is_expected.to match_array(%w(1)) }
     end
   end
+
+  describe "#get_filtered_tags" do
+    subject { generator.get_filtered_tags(%w(1 2 3 4 5)) }
+    # before { generator.get_filtered_tags(%w(1 2 3 4 5)) }
+
+    context "with excluded and between tags" do
+      let(:generator) { GitHubChangelogGenerator::Generator.new(between_tags: %w(1 2 3), exclude_tags: %w(2)) }
+      it { is_expected.to be_a Array }
+      it { is_expected.to match_array(%w(1 3)) }
+    end
+  end
+
+  describe "#filter_excluded_tags" do
+    subject { generator.filter_excluded_tags(%w(1 2 3)) }
+
+    context "with valid excluded tags" do
+      let(:generator) { GitHubChangelogGenerator::Generator.new(exclude_tags: %w(3)) }
+      it { is_expected.to be_a Array }
+      it { is_expected.to match_array(%w(1 2)) }
+    end
+  end
 end