transferred Code Ocean from original repository to GitHub

spec/lib/nonce_store_spec.rb

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+require 'rails_helper'
+
+describe NonceStore do
+  let(:nonce) { SecureRandom.hex }
+
+  describe '.add' do
+    it 'stores a nonce in the cache' do
+      expect(Rails.cache).to receive(:write)
+      NonceStore.add(nonce)
+    end
+  end
+
+  describe '.delete' do
+    it 'deletes a nonce from the cache' do
+      expect(Rails.cache).to receive(:write)
+      NonceStore.add(nonce)
+      NonceStore.delete(nonce)
+      expect(NonceStore.has?(nonce)).to be false
+    end
+  end
+
+  describe '.has?' do
+    it 'returns true for present nonces' do
+      NonceStore.add(nonce)
+      expect(NonceStore.has?(nonce)).to be true
+    end
+
+    it 'returns false for expired nonces' do
+      Lti.send(:remove_const, 'MAXIMUM_SESSION_AGE')
+      Lti::MAXIMUM_SESSION_AGE = 1
+      NonceStore.add(nonce)
+      expect(NonceStore.has?(nonce)).to be true
+      sleep(Lti::MAXIMUM_SESSION_AGE)
+      expect(NonceStore.has?(nonce)).to be false
+    end
+
+    it 'returns false for absent nonces' do
+      expect(NonceStore.has?(nonce)).to be false
+    end
+  end
+end