```ruby
require 'rails_helper'

RSpec.describe PlotsHelper, type: :helper do

  describe "#link_to_featured_plant" do

    let(:plot) { build(:plot, id: 1) }

    context "plot has no featured plant" do
      before { plot.featured_plant = nil }
      it "returns 'Unassigned' with a link to edit the plot" do
        expect(helper.link_to_featured_plant(plot)).to match "Unassigned. <a href=\"/plots/1/edit\">Add one?</a>"
      end
    end

    context "plot has a featured plant" do
      it "returns a link to the featured plant" do
        expect(helper.link_to_featured_plant(plot)).to match "<a href=\"/plants/.*\">Plant Example</a>"
      end
    end

  end

end
```

Update plots helper spec to accomodate users that are not logged in
user
```ruby
require 'rails_helper'

RSpec.describe PlotsHelper, type: :helper do

  describe "#link_to_featured_plant" do

    let(:plot) { build(:plot, id: 1) }
    let(:current_user) { build(:user, :admin) }

    context "plot has no featured plant and admin is logged in" do
      before { plot.featured_plant = nil }
      before { allow(helper).to receive(:logged_in?).and_return(true) }
      before { allow(helper).to receive(:admin?).and_return(true) }
      it "returns 'Unassigned' with a link to edit the plot" do
        expect(helper.link_to_featured_plant(plot)).to match "Unassigned. <a href=\"/plots/1/edit\">Add one?</a>"
      end
    end

    context "plot has no featured plant and admin is not logged in" do
      before { plot.featured_plant = nil }
      it "returns 'n/a'" do
        expect(helper.link_to_featured_plant(plot)).to match "n/a"
      end
    end

    context "plot has a featured plant" do
      it "returns a link to the featured plant" do
        expect(helper.link_to_featured_plant(plot)).to match "<a href=\"/plants/.*\">Plant Example</a>"
      end
    end

  end

end
```
assistant