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rails--rails/activesupport/test/message_encryptor_test.rb

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require 'abstract_unit'
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require 'active_support/time'
class MessageEncryptorTest < Test::Unit::TestCase
def setup
@encryptor = ActiveSupport::MessageEncryptor.new(ActiveSupport::SecureRandom.hex(64))
@data = {:some=>"data", :now=>Time.now}
end
def test_simple_round_tripping
message = @encryptor.encrypt(@data)
assert_equal @data, @encryptor.decrypt(message)
end
def test_encrypting_twice_yields_differing_cipher_text
first_messqage = @encryptor.encrypt(@data)
second_message = @encryptor.encrypt(@data)
assert_not_equal first_messqage, second_message
end
def test_messing_with_either_value_causes_failure
text, iv = @encryptor.encrypt(@data).split("--")
assert_not_decrypted([iv, text] * "--")
assert_not_decrypted([text, munge(iv)] * "--")
assert_not_decrypted([munge(text), iv] * "--")
assert_not_decrypted([munge(text), munge(iv)] * "--")
end
def test_signed_round_tripping
message = @encryptor.encrypt_and_sign(@data)
assert_equal @data, @encryptor.decrypt_and_verify(message)
end
private
def assert_not_decrypted(value)
assert_raise(ActiveSupport::MessageEncryptor::InvalidMessage) do
@encryptor.decrypt(value)
end
end
def munge(base64_string)
bits = ActiveSupport::Base64.decode64(base64_string)
bits.reverse!
ActiveSupport::Base64.encode64s(bits)
end
end