1 files changed, 24 insertions, 1 deletions
diff --git a/spec/lib/gitlab/checks/tag_check_spec.rb b/spec/lib/gitlab/checks/tag_check_spec.rb
index 50ffa5fad10..e75b0459337 100644
--- a/spec/lib/gitlab/checks/tag_check_spec.rb
+++ b/spec/lib/gitlab/checks/tag_check_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::Checks::TagCheck do
+RSpec.describe Gitlab::Checks::TagCheck, feature_category: :source_code_management do
   include_context 'change access checks context'
 
   describe '#validate!' do
@@ -14,6 +14,29 @@ RSpec.describe Gitlab::Checks::TagCheck do
       expect { subject.validate! }.to raise_error(Gitlab::GitAccess::ForbiddenError, 'You are not allowed to change existing tags on this project.')
     end
 
+    context "prohibited tags check" do
+      it "prohibits tag names that include refs/tags/ at the head" do
+        allow(subject).to receive(:tag_name).and_return("refs/tags/foo")
+
+        expect { subject.validate! }.to raise_error(Gitlab::GitAccess::ForbiddenError, "You cannot create a tag with a prohibited pattern.")
+      end
+
+      it "doesn't prohibit a nested refs/tags/ string in a tag name" do
+        allow(subject).to receive(:tag_name).and_return("fix-for-refs/tags/foo")
+
+        expect { subject.validate! }.not_to raise_error
+      end
+
+      context "deleting a refs/tags headed tag" do
+        let(:newrev) { "0000000000000000000000000000000000000000" }
+        let(:ref) { "refs/tags/refs/tags/267208abfe40e546f5e847444276f7d43a39503e" }
+
+        it "doesn't prohibit the deletion of a refs/tags/ tag name" do
+          expect { subject.validate! }.not_to raise_error
+        end
+      end
+    end
+
     context 'with protected tag' do
       let!(:protected_tag) { create(:protected_tag, project: project, name: 'v*') }