1 files changed, 25 insertions, 0 deletions
diff --git a/spec/controllers/concerns/internal_redirect_spec.rb b/spec/controllers/concerns/internal_redirect_spec.rb
index a0ee13b2352..7e23b56356e 100644
--- a/spec/controllers/concerns/internal_redirect_spec.rb
+++ b/spec/controllers/concerns/internal_redirect_spec.rb
@@ -54,6 +54,31 @@ describe InternalRedirect do
     end
   end
 
+  describe '#sanitize_redirect' do
+    let(:valid_path) { '/hello/world?hello=world' }
+    let(:valid_url) { "http://test.host#{valid_path}" }
+
+    it 'returns `nil` for invalid paths' do
+      invalid_path = '//not/valid'
+
+      expect(controller.sanitize_redirect(invalid_path)).to eq nil
+    end
+
+    it 'returns `nil` for invalid urls' do
+      input = 'http://test.host:3000/invalid'
+
+      expect(controller.sanitize_redirect(input)).to eq nil
+    end
+
+    it 'returns input for valid paths' do
+      expect(controller.sanitize_redirect(valid_path)).to eq valid_path
+    end
+
+    it 'returns path for valid urls' do
+      expect(controller.sanitize_redirect(valid_url)).to eq valid_path
+    end
+  end
+
   describe '#host_allowed?' do
     it 'allows uris with the same host and port' do
       expect(controller.host_allowed?(URI('http://test.host/test'))).to be(true)