David Turnbull
3/19/2006 6:27:00 PM
Hey all,
I'm following along with AWDWR, specifically the unit testing.
On page 148, it shows you how Test::Unit::TestCase will automatically
define instance variables based on your fixtures.
It doesn't seem to actually work, though. It seems that both @artists
["beatles"]["name"] and @beatles.name are nil objects in my test,
where as artists(:beatles).name works ok.
What is the right way of doing it? I'd guess the one that actually
works is right, but there's a lot of stuff on google about the other
ways that I can't get to work.
The actual error messages for the failed assertions are different:
@artists["beatles"]["name"]:
test_create(ArtistTest):
NoMethodError: You have a nil object when you didn't expect it!
The error occured while evaluating nil.name
test/unit/artist_test.rb:15:in `test_create'
@beatles.name:
test_create(ArtistTest):
NoMethodError: You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occured while evaluating nil.[]
test/unit/artist_test.rb:14:in `test_create'
test/fixtures/artists.yml:
beatles:
id: 1
name: The Beatles
test/unit/artist_test.rb:
require File.dirname(__FILE__) + '/../test_helper'
class ArtistTest < Test::Unit::TestCase
fixtures :artists
def setup
@artist = Artist.find(1)
end
def test_create
assert_equal @artists["beatles"]["name"], @artist.name #
fails
assert_equal @beatles.name, @artist.name #
fails
assert_equal artists(:beatles).name, @artist.name #
works
end
end