1 files changed, 93 insertions, 0 deletions
diff --git a/spec/lib/gitlab/markdown/merge_request_reference_filter_spec.rb b/spec/lib/gitlab/markdown/merge_request_reference_filter_spec.rb
new file mode 100644
index 00000000000..17bb50b157b
--- /dev/null
+++ b/spec/lib/gitlab/markdown/merge_request_reference_filter_spec.rb
@@ -0,0 +1,93 @@
+require 'spec_helper'
+
+module Gitlab::Markdown
+  describe MergeRequestReferenceFilter do
+    include ReferenceFilterSpecHelper
+
+    let(:project) { create(:project) }
+    let(:merge)   { create(:merge_request, source_project: project) }
+
+    it 'requires project context' do
+      expect { described_class.call('MergeRequest !123', {}) }.
+        to raise_error(ArgumentError, /:project/)
+    end
+
+    %w(pre code a style).each do |elem|
+      it "ignores valid references contained inside '#{elem}' element" do
+        exp = act = "<#{elem}>Merge !#{merge.iid}</#{elem}>"
+        expect(filter(act).to_html).to eq exp
+      end
+    end
+
+    context 'internal reference' do
+      let(:reference) { "!#{merge.iid}" }
+
+      it 'links to a valid reference' do
+        doc = filter("See #{reference}")
+
+        expect(doc.css('a').first.attr('href')).to eq urls.
+          namespace_project_merge_request_url(project.namespace, project, merge)
+      end
+
+      it 'links with adjacent text' do
+        doc = filter("Merge (#{reference}.)")
+        expect(doc.to_html).to match(/\(<a.+>#{Regexp.escape(reference)}<\/a>\.\)/)
+      end
+
+      it 'ignores invalid merge IDs' do
+        exp = act = "Merge !#{merge.iid + 1}"
+
+        expect(filter(act).to_html).to eq exp
+      end
+
+      it 'includes a title attribute' do
+        doc = filter("Merge #{reference}")
+        expect(doc.css('a').first.attr('title')).to eq "Merge Request: #{merge.title}"
+      end
+
+      it 'includes default classes' do
+        doc = filter("Merge #{reference}")
+        expect(doc.css('a').first.attr('class')).to eq 'gfm gfm-merge_request'
+      end
+
+      it 'includes an optional custom class' do
+        doc = filter("Merge #{reference}", reference_class: 'custom')
+        expect(doc.css('a').first.attr('class')).to include 'custom'
+      end
+
+      it 'supports an :only_path context' do
+        doc = filter("Merge #{reference}", only_path: true)
+        link = doc.css('a').first.attr('href')
+
+        expect(link).not_to match %r(https?://)
+        expect(link).to eq urls.namespace_project_merge_request_url(project.namespace, project, merge, only_path: true)
+      end
+    end
+
+    context 'cross-project reference' do
+      let(:namespace) { create(:namespace, name: 'cross-reference') }
+      let(:project2)  { create(:project, namespace: namespace) }
+      let(:merge)     { create(:merge_request, source_project: project2) }
+      let(:reference) { "#{project2.path_with_namespace}!#{merge.iid}" }
+
+      it 'links to a valid reference' do
+        doc = filter("See #{reference}")
+
+        expect(doc.css('a').first.attr('href')).
+          to eq urls.namespace_project_merge_request_url(project2.namespace,
+                                                         project, merge)
+      end
+
+      it 'links with adjacent text' do
+        doc = filter("Merge (#{reference}.)")
+        expect(doc.to_html).to match(/\(<a.+>#{Regexp.escape(reference)}<\/a>\.\)/)
+      end
+
+      it 'ignores invalid merge IDs on the referenced project' do
+        exp = act = "Merge #{project2.path_with_namespace}!#{merge.iid + 1}"
+
+        expect(filter(act).to_html).to eq exp
+      end
+    end
+  end
+end