example_spec.rb

describe Machines, "#update" do
  before(:each) do
    Machine.auto_migrate!
    Machinemodel.auto_migrate!
    @machine = Machine.create(:serial_number => "FAKENUM", :machinemodel => Machinemodel.create(:name => "IR2880"))
    @machine.save # machine#1
    
    @machine = Machine.create(:serial_number => "FAKENUM2", :machinemodel => Machinemodel.create(:name => "IR2200"))
    @machine.save # machine#2
    
    @params_valid = { :id => @machine.id, :machine => {:serial_number => "CHANGED"} }
    @params_invalid = { :id => @machine.id, :machine => {:serial_number => "FAKENUM"}}
    @params_non_existent_id = { :id => 23432, :machine => {:serial_number => "FAKENUM"}}
  end
  
  it "should do something" do
  end
  
  it "should raise an exception when invalid param hash is submitted" do
    lambda {
        dispatch_to(Machines, :update, @params_invalid).should redirect_to("/machines")
    }.should raise_error(Merb::ControllerExceptions::PreconditionFailed)
  end
  
  it "should raise an exception when non-existing id is submitted" do
    lambda {
        dispatch_to(Machines, :update, @params_non_existent_id).should redirect_to("/machines")
    }.should raise_error(Merb::ControllerExceptions::NotFound)
  end

  it "should update a machine when valid param hash is submitted" do
        dispatch_to(Machines, :update, @params_valid).should redirect_to("/machines")
  end
end