feat: Authenticate by SSO tokens (#1439)

Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>

spec/models/user_spec.rb

@@ -26,4 +26,25 @@ RSpec.describe User do
     it { expect(user.pubsub_token).not_to eq(nil) }
     it { expect(user.saved_changes.keys).not_to eq('pubsub_token') }
   end
+
+  context 'sso_auth_token' do
+    it 'can generate multiple sso tokens which can be validated' do
+      sso_auth_token1 = user.generate_sso_auth_token
+      sso_auth_token2 = user.generate_sso_auth_token
+      expect(sso_auth_token1).present?
+      expect(sso_auth_token2).present?
+      expect(user.valid_sso_auth_token?(sso_auth_token1)).to eq true
+      expect(user.valid_sso_auth_token?(sso_auth_token2)).to eq true
+    end
+
+    it 'wont validate an invalid token' do
+      expect(user.valid_sso_auth_token?(SecureRandom.hex(32))).to eq false
+    end
+
+    it 'wont validate an invalidated token' do
+      sso_auth_token = user.generate_sso_auth_token
+      user.invalidate_sso_auth_token(sso_auth_token)
+      expect(user.valid_sso_auth_token?(sso_auth_token)).to eq false
+    end
+  end
 end