Merge pull request #320 from ITV/filter-tags

Added tag exclusion with a filter (string or regex)

spec/unit/generator/generator_tags_spec.rb

@@ -76,31 +76,47 @@ describe GitHubChangelogGenerator::Generator do
   describe "#filter_excluded_tags" do
     subject { generator.filter_excluded_tags(tags_mash_from_strings(%w(1 2 3))) }
 
-    context "with valid excluded tags" do
+    context "with matching string" do
       let(:generator) { GitHubChangelogGenerator::Generator.new(exclude_tags: %w(3)) }
       it { is_expected.to be_a Array }
       it { is_expected.to match_array(tags_mash_from_strings(%w(1 2))) }
     end
 
-    context "with invalid excluded tags" do
+    context "with non-matching string" do
       let(:generator) { GitHubChangelogGenerator::Generator.new(exclude_tags: %w(invalid tags)) }
       it { is_expected.to be_a Array }
       it { is_expected.to match_array(tags_mash_from_strings(%w(1 2 3))) }
     end
 
-    context "with regex exclude_tags" do
+    context "with matching regex" do
       let(:generator) { GitHubChangelogGenerator::Generator.new(exclude_tags: /[23]/) }
       it { is_expected.to be_a Array }
       it { is_expected.to match_array(tags_mash_from_strings(%w(1))) }
     end
 
-    context "with non-matching regex in exclude_tags" do
+    context "with non-matching regex" do
       let(:generator) { GitHubChangelogGenerator::Generator.new(exclude_tags: /[abc]/) }
       it { is_expected.to be_a Array }
       it { is_expected.to match_array(tags_mash_from_strings(%w(1 2 3))) }
     end
   end
 
+  describe "#filter_excluded_tags_regex" do
+    subject { generator.filter_excluded_tags(tags_mash_from_strings(%w(1 2 3))) }
+
+    context "with matching regex" do
+      let(:generator) { GitHubChangelogGenerator::Generator.new(exclude_tags_regex: '[23]') }
+      it { is_expected.to be_a Array }
+      it { is_expected.to match_array(tags_mash_from_strings(%w(1))) }
+    end
+
+    context "with non-matching regex" do
+      let(:generator) { GitHubChangelogGenerator::Generator.new(exclude_tags_regex: '[45]') }
+      it { is_expected.to be_a Array }
+      it { is_expected.to match_array(tags_mash_from_strings(%w(1 2 3))) }
+    end
+  end
+
   describe "#filter_since_tag" do
     context "with filled array" do
       subject { generator.filter_since_tag(tags_mash_from_strings(%w(1 2 3))) }