James B. Byrne wrote:
I wish to test a small library that I have written. The module
resides in a file in ./lib. It is loaded in the application via a a
file in ./config/initializers that contains the following code:
require 'hll_audit_stamps'
ActiveRecord::Base
include ActiveRecord::HLLAuditStamps
end
My questions are really procedural in nature. What do I put at the
top of my spec file to load an ActiveRecord instance containing the
custom module? Or, do I put the code given above into
spec_helper.rb?
I am really only interested in the actions of the module so I would
like to create a test model instance (Mytable) inside the spec
rather than create a dummy model in app/models. How do you do this
without connecting to an underlying database? I am unfamiliar with
mocks, although this seems to be the case for one. Nonetheless, am
am uncertain how a mock would inherit the necessary characteristics
from the module that I am testing?
I would appreciate guidance here.
Sincerely,
Hi James,
From the looks of it you may want to move your module into a plugin and
then have it's own set of specs. Doing this may make your life easier
in running specs in the fashion you are wanting to. In the past I have
done just this and have used the in-memory sqlite3 adapter with some
dummy AR classes, just as you have explained. In your plugin's
spec_helper put something like this:
ActiveRecord::Base.establish_connection(:adapter => "sqlite3", :dbfile
=> ":memory:")
def setup_db
ActiveRecord::Schema.define(:version => 1) do
create_table :vehicles do |t|
t.string :type, :name
t.integer :dealership_id
end
create_table :dealerships do |t|
t.string :name
end
end
end
def teardown_db
ActiveRecord::Base.connection.tables.each do |table|
ActiveRecord::Base.connection.drop_table(table)
end
end
setup_db
class Vehicle < ActiveRecord::Base
...
end
class Dealership < ActiveRecord::Base
...
end
You can then use the dummy AR classes in your specs with an in-memory DB.
I hope that helps,
Ben
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