Redmine

Possibly silly question. Have you installed the gems needed by ObjectDaddy?

Yes. Redmine without any plugins passes all tests. With installed plugin Redmine's tests are broken.

I'm having the same problem here. Here are my specs:

Debian Squeeze Linux kernel 2.6.32-trunk-686

Ruby 1.8.7 (2010-01-10 patchlevel 249) [i486-linux]
Redmine: 0.9.3

Installed gems:
actionmailer (2.3.5, 2.3.4, 2.3.3, 2.3.2, 2.2.2)
actionpack (2.3.5, 2.3.4, 2.3.3, 2.3.2, 2.2.2)
activerecord (2.3.5, 2.3.4, 2.3.3, 2.3.2, 2.2.2)
activeresource (2.3.5, 2.3.4, 2.3.3, 2.3.2, 2.2.2)
activesupport (2.3.5, 2.3.4, 2.3.3, 2.3.2, 2.2.2)
acts_as_paranoid (0.3.1)
acts_as_reportable (1.1.1)
acts_as_versioned (0.2.3)
archive-tar-minitar (0.5.2)
bleak_house (7.2, 4.5)
builder (2.1.2)
calendar_date_select (1.16.1, 1.15)
cgi_multipart_eof_fix (2.5.0)
color (1.4.1, 1.4.0)
columnize (0.3.1, 0.3.0, 0.2)
daemons (1.0.10)
dust (0.1.6)
edavis10-object_daddy (0.4.3)
eventmachine (0.12.10, 0.12.8)
facets (2.8.2, 2.8.1, 2.8.0, 2.7.0, 2.6.0, 2.5.2, 2.5.1, 2.5.0)
fast_gettext (0.5.1)
fastercsv (1.5.3, 1.5.1, 1.5.0, 1.4.0, 1.2.3)
fastthread (1.0.7)
ffi (0.6.3)
flay (1.4.0)
flog (2.4.0, 2.2.0)
gem_plugin (0.2.3)
gemcutter (0.5.0, 0.4.1)
gettext (2.1.0)
gosu (0.7.18, 0.7.15, 0.7.14)
grosser-i18n_data (0.2.3)
gruff (0.3.6, 0.3.4)
haml (2.2.22, 2.2.20, 2.2.17, 2.2.15, 2.2.14, 2.2.6, 2.2.5, 2.2.3, 2.2.2, 2.2.1, 2.0.9, 2.0.8, 2.0.6, 2.0.5)
heckle (1.4.3)
hoe (2.6.0, 2.5.0, 2.3.3, 2.3.2, 1.12.2, 1.12.1, 1.11.0, 1.10.0, 1.8.3, 1.8.2)
hpricot (0.8.2, 0.8.1, 0.6.164)
htmlentities (4.2.1, 4.2.0, 4.1.0, 4.0.0)
jscruggs-metric_fu (1.1.5)
json_pure (1.2.3, 1.2.2, 1.2.0)
libxml-ruby (1.1.3)
linecache (0.43)
locale (2.0.5)
mailfactory (1.4.0)
mime-types (1.16, 1.15)
mocha (0.9.8, 0.9.7, 0.9.5)
mojombo-chronic (0.3.0)
mongrel (1.1.5)
mongrel_cluster (1.0.5)
mysql (2.8.1, 2.7)
nitpick (1.0.2)
object_daddy (0.4.3)
ParseTree (3.0.5, 3.0.4, 3.0.3, 3.0.2, 3.0.1)
pdf-writer (1.1.8)
polyglot (0.3.1, 0.3.0, 0.2.9, 0.2.8, 0.2.6, 0.2.5, 0.2.4, 0.2.3)
postgres-pr (0.6.3, 0.6.1, 0.5.1, 0.5.0, 0.4.0)
prawn (0.8.4, 0.7.1)
prawn-core (0.8.4, 0.7.1)
prawn-layout (0.8.4, 0.7.1)
prawn-security (0.8.4, 0.7.1)
rack (1.1.0, 1.0.1, 1.0.0)
rails (2.3.5, 2.3.4, 2.3.3, 2.3.2, 2.2.2)
rake (0.8.7, 0.8.4, 0.8.3)
rb-inotify (0.7.1)
rcov (0.9.8, 0.9.7.1, 0.9.6, 0.8.1.2.0)
reek (1.2.7.3, 1.2.7.2, 1.2.7.1, 1.2.6, 1.2.5, 1.2.0)
relevance-rcov (0.9.2.1)
relevance-tarantula (0.3.3, 0.2.1, 0.2.0, 0.1.7)
roodi (2.1.0, 2.0.1, 2.0.0, 1.4.0, 1.3.5, 1.3.2, 1.3.0)
rspec (1.3.0)
ruby-debug (0.10.3)
ruby-debug-base (0.10.3, 0.10.2)
ruby-debug-ide (0.4.9, 0.4.7, 0.4.6, 0.4.5, 0.4.4, 0.3.4, 0.3.1)
ruby-prof (0.8.1, 0.7.10, 0.7.6, 0.7.3)
ruby2ruby (1.2.4)
ruby_parser (2.0.4, 2.0.3, 2.0.2)
rubyforge (2.0.4, 2.0.3, 2.0.0, 1.0.4, 1.0.3, 1.0.2)
rubygems-update (1.3.6, 1.3.5, 1.3.4, 1.3.3, 1.3.1)
RubyInline (3.8.4, 3.8.3, 3.8.2, 3.8.1)
rubyzip (0.9.4, 0.9.1)
ruport (1.6.3, 1.6.1)
ruport-util (0.14.0)
rvm (0.1.26, 0.1.24, 0.1.20, 0.1.3, 0.0.999, 0.0.86, 0.0.82, 0.0.52, 0.0.48, 0.0.37, 0.0.30)
scruffy (0.2.6, 0.2.5)
sexp_processor (3.0.4, 3.0.3, 3.0.2, 3.0.1, 3.0.0)
shoulda (2.10.3)
tattle (1.0.3)
thin (1.2.7, 1.2.5, 1.2.4, 1.2.2)
thoughtbot-shoulda (2.10.2)
transaction-simple (1.4.0)
treetop (1.4.5, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.3.0, 1.2.6, 1.2.5, 1.2.4)
trestle_generator (1.1.7.3)
trollop (1.16.2, 1.15)
ZenTest (4.3.1, 4.3.0, 4.2.1, 4.1.4, 4.1.3, 4.0.0, 3.11.1, 3.11.0)

Update: I managed to remove the errors by changing the model patches loading order, specifically my "UserPatch" module, which is responsible for some patching in the User model, was loading first.

Before:

Dispatcher.to_prepare do
  User.send(:include, UserPatch)
  Watcher.send(:include, WatcherPatch)
  Issue.send(:include, IssuePatch)
  Journal.send(:include, JournalPatch)
end

After:

Dispatcher.to_prepare do
  Watcher.send(:include, WatcherPatch)
  Issue.send(:include, IssuePatch)
  Journal.send(:include, JournalPatch)
  User.send(:include, UserPatch)
end

After that the "undefined method `generate!'" errors were gone.

And in my case it was double plugin initialization: I had both redmine_test_plugin/init.rb and redmine_test_plugin/rails/init.rb. Several other plugins has this issue too.