fix text length validation

completes #64

test/validators/answer_format_validator/text_test.rb

@@ -25,11 +25,24 @@ class AnswerFormatValidatorTest < ActiveSupport::TestCase
     assert_match(/enter.*answer/, obj.errors.messages[:answer][0])
   end
 
-  test "text should FAIL with more than 1000 charactures" do
+  test "text should PASS with 999 character" do
     obj = AnswerValidatable.new('text')
-    obj.answer = SecureRandom.urlsafe_base64(1001)
+    obj.answer = long_string_with_returns
+
+    assert obj.valid?
+    assert obj.errors.messages.empty?
+  end
+
+  test "text should FAIL with more than 1000 character" do
+    obj = AnswerValidatable.new('text')
+    obj.answer = long_string_with_returns + " - to long now "
 
     refute obj.valid?
     assert_match(/char.*limit.*1000.$/, obj.errors.messages[:answer][0])
   end
+
+  def long_string_with_returns
+    # returns 999 chars, after \r is stripped.
+    "Some rando input\r\n\rYo. Making this up.\r\n" * 27
+  end
 end