1 files changed, 57 insertions, 0 deletions
diff --git a/spec/lib/gitlab/auth/unique_ips_limiter_spec.rb b/spec/lib/gitlab/auth/unique_ips_limiter_spec.rb
new file mode 100644
index 00000000000..94dcddcc30c
--- /dev/null
+++ b/spec/lib/gitlab/auth/unique_ips_limiter_spec.rb
@@ -0,0 +1,57 @@
+require 'spec_helper'
+
+describe Gitlab::Auth::UniqueIpsLimiter, :redis, lib: true do
+  include_context 'unique ips sign in limit'
+  let(:user) { create(:user) }
+
+  describe '#count_unique_ips' do
+    context 'non unique IPs' do
+      it 'properly counts them' do
+        expect(described_class.update_and_return_ips_count(user.id, 'ip1')).to eq(1)
+        expect(described_class.update_and_return_ips_count(user.id, 'ip1')).to eq(1)
+      end
+    end
+
+    context 'unique IPs' do
+      it 'properly counts them' do
+        expect(described_class.update_and_return_ips_count(user.id, 'ip2')).to eq(1)
+        expect(described_class.update_and_return_ips_count(user.id, 'ip3')).to eq(2)
+      end
+    end
+
+    it 'resets count after specified time window' do
+      Timecop.freeze do
+        expect(described_class.update_and_return_ips_count(user.id, 'ip2')).to eq(1)
+        expect(described_class.update_and_return_ips_count(user.id, 'ip3')).to eq(2)
+
+        Timecop.travel(Time.now.utc + described_class.config.unique_ips_limit_time_window) do
+          expect(described_class.update_and_return_ips_count(user.id, 'ip4')).to eq(1)
+          expect(described_class.update_and_return_ips_count(user.id, 'ip5')).to eq(2)
+        end
+      end
+    end
+  end
+
+  describe '#limit_user!' do
+    include_examples 'user login operation with unique ip limit' do
+      def operation
+        described_class.limit_user! { user }
+      end
+    end
+
+    context 'allow 2 unique ips' do
+      before { current_application_settings.update!(unique_ips_limit_per_user: 2) }
+
+      it 'blocks user trying to login from third ip' do
+        change_ip('ip1')
+        expect(described_class.limit_user! { user }).to eq(user)
+
+        change_ip('ip2')
+        expect(described_class.limit_user! { user }).to eq(user)
+
+        change_ip('ip3')
+        expect { described_class.limit_user! { user } }.to raise_error(Gitlab::Auth::TooManyIps)
+      end
+    end
+  end
+end