message title shouldn't accept invalid utf-8 sequences - test currently fails

[rails.git] / test / unit / message_test.rb

diff --git a/test/unit/message_test.rb b/test/unit/message_test.rb
index b56972704e4a024349713a9404b6bb0da6ecab17..ea05b130764271eb70fe5b9a7559eeeb27ab5828 100644 (file)
--- a/test/unit/message_test.rb
+++ b/test/unit/message_test.rb
@@ -3,6 +3,14 @@ require File.dirname(__FILE__) + '/../test_helper'
 class MessageTest < Test::Unit::TestCase
   fixtures :messages, :users
 
+  EURO = "\xe2\x82\xac" #euro symbol
+
+  # This needs to be updated when new fixtures are added
+  # or removed.
+  def test_check_message_count
+    assert_equal 2, Message.count
+  end
+
   def test_check_empty_message_fails
     message = Message.new
     assert !message.valid?
@@ -12,4 +20,63 @@ class MessageTest < Test::Unit::TestCase
     assert true, message.message_read
   end
   
+  def test_validating_msgs
+    message = messages(:one)
+    assert message.valid?
+    massage = messages(:two)
+    assert message.valid?
+  end
+  
+  def test_invalid_send_recipient
+    message = messages(:one)
+    message.sender = nil
+    message.recipient = nil
+    assert !message.valid?
+
+    assert_raise(ActiveRecord::RecordNotFound) { User.find(0) }
+    message.from_user_id = 0
+    message.to_user_id = 0
+    assert_raise(ActiveRecord::RecordInvalid) {message.save!}
+  end
+
+  def test_utf8_roundtrip
+    (1..255).each do |i|
+      assert_message_ok('c', i)
+      assert_message_ok(EURO, i)
+    end
+  end
+
+  def test_length_oversize
+    assert_raise(ActiveRecord::RecordInvalid) { make_message('c', 256).save! }
+    assert_raise(ActiveRecord::RecordInvalid) { make_message(EURO, 256).save! }
+  end
+
+  def test_invalid_utf8
+    # See e.g http://en.wikipedia.org/wiki/UTF-8 for byte sequences
+    # FIXME - Invalid Unicode characters can still be encoded into "valid" utf-8 byte sequences - maybe check this too?
+    invalid_sequences = ["\xC0",         # always invalid utf8
+                         "\xC2\x4a",     # 2-byte multibyte identifier, followed by plain ASCII
+                         "\xC2\xC2",     # 2-byte multibyte identifier, followed by another one
+                         "\x4a\x82",     # plain ASCII, followed by multibyte continuation
+                         "\x82\x82",     # multibyte continuations without multibyte identifier
+                         "\xe1\x82\x4a", # three-byte identifier, contination and (incorrectly) plain ASCII
+                        ]
+    invalid_sequences.each do |char|
+      assert_raise(ActiveRecord::RecordInvalid) { make_message(char, 1).save! } 
+    end
+  end  
+
+  def make_message(char, count)
+    message = messages(:one)
+    message.title = char * count
+    return message
+  end
+
+  def assert_message_ok(char, count)
+    message = make_message(char, count)
+    assert message.save!
+    response = message.class.find(message.id) # stand by for some über-generalisation...
+    assert_equal char * count, response.title, "message with #{count} #{char} chars (i.e. #{char.length*count} bytes) fails"
+  end
+
 end