Errata for Rails Test Prescriptions

#46282: Arguably a matter of taste, but in the first sentence of the third paragraph, "Performance tests are different than" should probably be "Performance tests are different from".

I'd post a reference if the form didn't block me from doing so, but "different from" gets more than 13 times the usage of "different than" in written American English.--Cameron Desautels

#47060: "The assert_valid() test, which verifies that an ActiveRecord model is—wait for it—valid according to the rules of that model."

It appears assert_valid() is deprecated now (I get NoMethodError with Rails 3.0.x, and I see lots of forum posts from people upgrading to Rails 2.3.x and having their tests break).

One person had a good idea: Reimplement it as a test helper which dumps out the error(s) so you can easily see why it didn't validate:

def assert_valid(record)
assert record.valid?, record.errors.full_messages.join("\n")
end--Brent J. Nordquist

#46424: The objects created in each of the "full name" tests use variable "u1". The assert_equal assertions though use variable name "user." Also, should the User method be "full_name" and not "full name"? For example, maybe the first test should be written:

test "full names" do
u1 = User.create(:first_name => "Fred", :last_name => "Flintstone")
assert_equal("Fred Flintstone", u1.full_name)
end

This applies to each of the three tests listed at the end of section 5.3.
--Michael Roeser

#47063: Line 9 of the Fred-and-Barney fixture example has:

email: brubble@slaterockandgravel.com/

There is an extra trailing "/" on the end of the email address.--Brent J. Nordquist

#46678: "Shoulda defines specific one-liners for ActionController, ActionMailer, ActionView, ActiveRecord, and ActionMailer."

ActionMailer listed twice (ok, so it's not a biggie ; )--Gerald Anderson

#46382: on the third paragraph there are a repetition of the word “ActionMailer”:

Shoulda defines specific one-liners for ActionController, -->ActionMailer<--,
ActionView, ActiveRecord, and -->ActionMailer<--.--Mirco Frison