```ruby
require 'spec_helper'

describe StandardTasks::PaperAdminTask do
  describe "defaults" do
    subject(:task) { StandardTasks::PaperAdminTask.new }
    specify { expect(task.title).to eq 'Assign Admin' }
    specify { expect(task.role).to eq 'admin' }
  end

  describe "updating paper admin" do
    let(:paper) { FactoryGirl.create(:paper, :with_tasks) }
    let(:phase) { paper.phases.first }
    let(:task)  { StandardTasks::PaperAdminTask.create(phase: phase, assignee: bob, admin_id: bob.id) }
    let(:sally) { create :user }
    let(:bob) { create :user }

    context "when paper admin is changed" do
      it "will update paper and tasks" do
        expect(task).to receive(:update_paper_admin_and_tasks)
        task.admin_id = sally.id
        task.save
      end
    end

    context "when paper admin is not changed" do
      it "will not update paper or tasks" do
        expect(task).to_not receive(:update_paper_admin_and_tasks)
        task.save
      end
    end
  end
end
```

Fix paper admin task spec.
user
```ruby
require 'spec_helper'

describe StandardTasks::PaperAdminTask do
  describe "defaults" do
    subject(:task) { StandardTasks::PaperAdminTask.new }
    specify { expect(task.title).to eq 'Assign Admin' }
    specify { expect(task.role).to eq 'admin' }
  end

  describe "updating paper admin" do
    let(:sally) { create :user }
    let(:bob) { create :user }

    let(:paper) { create(:paper, :with_tasks) }
    let!(:role) { create(:paper_role, role: 'admin', user: bob, paper: paper) } # make bob an admin for the paper
    let(:phase) { paper.phases.first }
    let(:task)  { StandardTasks::PaperAdminTask.create(phase: phase, assignee: bob, admin_id: bob.id) }

    context "when paper admin is changed" do
      it "will update paper and tasks" do
        expect(task).to receive(:update_paper_admin_and_tasks)
        # the admin was bob, change to sally
        task.admin_id = sally.id
        task.save
      end
    end

    context "when paper admin is not changed" do
      it "will not update paper or tasks" do
        expect(task).to_not receive(:update_paper_admin_and_tasks)
        # the admin stays bob, nothing should happen.
        task.save
      end
    end
  end
end
```
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