I needed to create a temporary model and its backing store for RSpec
testing in order to test an acts_as_xxx module I've written. After digging
around the sources for a while, I came up with the following solution.
(NB: This is cross posted from Stack Overflow, but I thought it would make
a useful mini-tutorial.)
require 'spec_helper'
class TempModel
include DataMapper::Resource
property :id, Serial
property :name, String
end
describe "MyTests" do
before(:all) do
# Create the temp_models db table and finalize the model
DataMapper.auto_upgrade!
TempModel.finalize
end
after(:all) do
# drop the temp_models table
adapter = DataMapper.repository(:default).adapter
adapter.execute("DROP TABLE #{TempModel.storage_name}")
end
before(:each) do
# assure an empty table before each test
TempModel.destroy!
end
it 'creates a TempModel' do
expect { TempModel.create(:name => "yowza")}.to_not raise_error
end
end
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