Ruby on Rails

I am writing a rails app with my colleague who wrote a lot of the tests.
He had to take a leave of absence due to a death in his family, and I am
needing helps with changing the model so that the tests will pass in our
spec file.

Here is the model:

class Worker < ActiveRecord::Base
attr_accessible :first_name, :last_name

has_many :writings
end




Here is the spec:

require 'spec_helper.rb'

describe Worker do
describe "merging two workers" do
before(:each) do
@writing1 = Writing.create!(:writing_text => "Winner's note")
@writing2 = Writing.create!(:writing_text => "Loser's note")

@winner = Worker.create!(:first_name => "Jim", :last_name =>
"Sullivan", :email => "winner@gmail.com")
@winner.writings << @writing1

@loser = Worker.create!(:first_name => "Tom", :last_name =>
"Smithe"
@loser.writings << @writing2

@result = Worker.merge(@winner, @loser)
end

it "should return the winner" do
@result.id.should eq @winner.id
end

it "should not edit the winner's name" do
@result.first_name.should eq @winner.first_name
@result.last_name.should eq @winner.last_name
end
end
end


All of these tests are failing, and I'm not sure what to do. I don't
want to try something and accidentally break the model, as I am new to
ruby on rails. Thanks.

Edit: Fails:

Failures:



1) Worker merging two worker should return the winner
Failure/Error: @result = Worker.merge(@winner, @loser)
NoMethodError:
undefined method `merge' for #<Class:0x007fb612ee2ff8>
# ./spec/models/worker_spec.rb:15:in `block (3 levels) in <top
(required)>'

2) Person merging two people should not edit the winner's name
Failure/Error: @result = Worker.merge(@winner, @loser)
NoMethodError:
undefined method `merge' for #<Class:0x007fb612ee2ff8>
# ./spec/models/worker_spec.rb:15:in `block (3 levels) in <top
(required)>'

3) Person merging two people should merge the winner's email only
if he has no email
Failure/Error: @result = Worker.merge(@winner, @loser)
NoMethodError:
undefined method `merge' for #<Class:0x007fb612ee2ff8>
# ./spec/models/worker_spec.rb:15:in `block (3 levels) in <top
(required)>'

4) Person merging two people should not edit the winner's company
name
Failure/Error: @result = Worker.merge(@winner, @loser)
NoMethodError:
undefined method `merge' for #<Class:0x007fb612ee2ff8>
# ./spec/models/worker_spec.rb:15:in `block (3 levels) in <top
(required)>'

5) Person merging two people should delete the loser
Failure/Error: @result = Worker.merge(@winner, @loser)
NoMethodError:
undefined method `merge' for #<Class:0x007fb612ee2ff8>
# ./spec/models/worker_spec.rb:15:in `block (3 levels) in <top
(required)>'

6) Person merging two people should merge the notes together
Failure/Error: @result = Worker.merge(@winner, @loser)
NoMethodError:
undefined method `merge' for #<Class:0x007fb612ee2ff8>
# ./spec/models/worker_spec.rb:15:in `block (3 levels) in <top
(required)>'

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