Hello all,
I am trying to run a unit test in a Rails project of mine (Rails 1.2.2, Ruby 1.8.4 (2005-12-24) [i486-linux]), and am running into the following error:
1) Error: test_pattern_splits(PatternSplitTest): TypeError: $_ value need to be String (nil given) /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:74:in `split' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:74:in `add_on_blank' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:73:in `add_on_blank' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:409:in `validates_presence_of' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:822:in `run_validations' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:816:in `run_validations' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:780:in `valid_without_callbacks?' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ callbacks.rb:299:in `valid?' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:751:in `save_without_transactions' /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ transactions.rb:129:in `save' <snip>
The model is PatternSplit and the attribute is: t.column :split, :smallint, :null => false
I assumed this was just a result of a simple bug in my code somewhere, but I wasn't able to find anything obviously wrong. I decided to break at /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/active_record/ validations.rb:74 and debug further, and I came across a very strange condition.
The line causing the problem is: value = @base.respond_to?(attr.to_s) ? @base.send(attr.to_s) : @base[attr.to_s]
Debugging session: irb(#<ActiveRecord::Errors:0xb77739ac>):001:0> @base.respond_to? (attr.to_s) => true irb(#<ActiveRecord::Errors:0xb77739ac>):002:0> @base.send(attr.to_s) TypeError: $_ value need to be String (nil given) from (irb):2:in `split' from (irb):2:in `each' from /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/validations.rb:75:in `each' from /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/validations.rb:73:in `add_on_blank' <snip> irb(#<ActiveRecord::Errors:0xb77739ac>):003:0> attr.to_s => "split" irb(#<ActiveRecord::Errors:0xb77739ac>):004:0> @base.send "split" TypeError: $_ value need to be String (nil given) from (irb):4:in `split' from (irb):4:in `each' from /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/validations.rb:75:in `each' from /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/validations.rb:73:in `add_on_blank' <snip> irb(#<ActiveRecord::Errors:0xb77739ac>):005:0> @base.split => 7 irb(#<ActiveRecord::Errors:0xb77739ac>):006:0> @base.send "split" => 7
What is going on here?
Thanks in advance, jlrc