1 files changed, 33 insertions, 0 deletions
diff --git a/spec/lib/gitlab/rack_attack/user_allowlist_spec.rb b/spec/lib/gitlab/rack_attack/user_allowlist_spec.rb
new file mode 100644
index 00000000000..aa604dfab71
--- /dev/null
+++ b/spec/lib/gitlab/rack_attack/user_allowlist_spec.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::RackAttack::UserAllowlist do
+  using RSpec::Parameterized::TableSyntax
+
+  subject { described_class.new(input)}
+
+  where(:input, :elements) do
+    nil | []
+    '' |  []
+    '123' | [123]
+    '123,456' | [123, 456]
+    '123,foobar, 456,' | [123, 456]
+  end
+
+  with_them do
+    it 'has the expected elements' do
+      expect(subject).to contain_exactly(*elements)
+    end
+
+    it 'implements empty?' do
+      expect(subject.empty?).to eq(elements.empty?)
+    end
+
+    it 'implements include?' do
+      unless elements.empty?
+        expect(subject).to include(elements.first)
+      end
+    end
+  end
+end