```ruby
require 'pathname'
require Pathname(__FILE__).dirname.expand_path.parent + 'spec_helper'

describe DataMapper::Validate::ValidatesWithBlock do
  before(:all) do
    class Ship
      include DataMapper::Resource
      property :id, Integer, :key => true
      property :name, String

      validates_with_block :when => [:testing_failure] do
        [false, 'Validation failed']
      end
      validates_with_block :when => [:testing_success] do
        true
      end
      validates_with_block :name, :when => [:testing_name_validation] do
        [false, 'Name is invalid']
      end
    end
  end

  it "should validate via a block on the resource" do
    Ship.new.valid_for_testing_failure?.should == false
    Ship.new.valid_for_testing_success?.should == true
    ship = Ship.new
    ship.valid_for_testing_failure?.should == false
    ship.errors.on(:fail_validation).should include('Validation failed')
  end

  it "should validate via a block and add error to field" do
    ship = Ship.new
    ship.should_not be_valid_for_testing_name_validation
    ship.errors.on(:name).should include('Name is invalid')
  end
end
```

Mark failing spec as pending
user
```ruby
require 'pathname'
require Pathname(__FILE__).dirname.expand_path.parent + 'spec_helper'

describe DataMapper::Validate::ValidatesWithBlock do
  before(:all) do
    class Ship
      include DataMapper::Resource
      property :id, Integer, :key => true
      property :name, String

      validates_with_block :when => [:testing_failure] do
        [false, 'Validation failed']
      end
      validates_with_block :when => [:testing_success] do
        true
      end
      validates_with_block :name, :when => [:testing_name_validation] do
        [false, 'Name is invalid']
      end
    end
  end

  it "should validate via a block on the resource" do
    pending 'Fix error conetxt name' do
      Ship.new.valid_for_testing_failure?.should == false
      Ship.new.valid_for_testing_success?.should == true
      ship = Ship.new
      ship.valid_for_testing_failure?.should == false
      ship.errors.on(:fail_validation).should include('Validation failed')
    end
  end

  it "should validate via a block and add error to field" do
    ship = Ship.new
    ship.should_not be_valid_for_testing_name_validation
    ship.errors.on(:name).should include('Name is invalid')
  end
end
```
assistant