Create AuthTokenCreator and AuthTokenDecryptor classes

test/lib/auth_token/auth_token_creator_test.rb

@@ -0,0 +1,52 @@
+require 'test_helper'
+require 'openssl'
+require_relative '../../../lib/auth_token/auth_token_creator'
+
+class AuthTokenCreatorTest < ActiveSupport::TestCase
+  def setup
+    super
+
+    @user = users(:registrant)
+    time = Time.zone.parse('2010-07-05 00:30:00 +0000')
+    @random_bytes = SecureRandom.random_bytes(64)
+    @token_creator = AuthTokenCreator.new(@user, @random_bytes, time)
+  end
+
+  def test_hashable_is_constructed_as_expected
+    expected_hashable = { user_ident: 'US-1234', user_username: 'Registrant User',
+                          expires_at: '2010-07-05 00:30:00 UTC' }.to_json
+    assert_equal(expected_hashable, @token_creator.hashable)
+  end
+
+  def test_encrypted_token_is_decryptable
+    encryptor = OpenSSL::Cipher::AES.new(256, :CBC)
+    encryptor.decrypt
+    encryptor.key = @random_bytes
+
+    base64_decoded = Base64.decode64(@token_creator.encrypted_token)
+    result = encryptor.update(base64_decoded) + encryptor.final
+
+    hashable = { user_ident: 'US-1234', user_username: 'Registrant User',
+                 expires_at: '2010-07-05 00:30:00 UTC' }.to_json
+
+    assert_equal(hashable, result)
+  end
+
+  def test_token_in_json_returns_expected_values
+    @token_creator.stub(:encrypted_token, 'super_secure_token') do
+      token = @token_creator.token_in_hash
+      assert_equal('2010-07-05 00:30:00 UTC', token[:expires_at])
+      assert_equal('Bearer', token[:type])
+    end
+  end
+
+  def test_create_with_defaults_injects_values
+    travel_to Time.zone.parse('2010-07-05 00:30:00 +0000')
+
+    token_creator_with_defaults = AuthTokenCreator.create_with_defaults(@user)
+    assert_equal(Rails.application.config.secret_key_base, token_creator_with_defaults.key)
+    assert_equal('2010-07-05 02:30:00 UTC', token_creator_with_defaults.expires_at)
+
+    travel_back
+  end
+end