growstuff/spec/controllers/likes_controller_spec.rb

require 'rails_helper'

describe LikesController do
  let(:like) { FactoryBot.create :like, member: member }
  let(:member) { FactoryBot.create(:member) }
  let(:blogpost) { FactoryBot.create(:post) }
  let(:mypost) { FactoryBot.create(:post, author: member) }

  before { sign_in member }

  describe "POST create" do
    it { expect(response.content_type).to eq "application/json" }
    before { post :create, params: { post_id: blogpost.id, format: :json } }
    it { expect(Like.last.likeable_id).to eq(blogpost.id) }
    it { expect(Like.last.likeable_type).to eq('Post') }
    it { JSON.parse(response.body)["description"] == "1 like" }

    describe "Liking someone else's post" do
      it { expect(response.code).to eq('201') }
    end

    describe "Liking your own post" do
      let(:blogpost) { FactoryBot.create(:post, author: member) }
    end
  end

  describe "DELETE destroy" do
    before { delete :destroy, params: { id: like.id, format: :json } }
    it { expect(response.content_type).to eq "application/json" }

    describe "un-liking something i liked before" do
      it { expect(response.code).to eq('200') }
      it { JSON.parse(response.body)["description"] == "0 likes" }
    end

    describe "Deleting someone else's like" do
      let(:like) { FactoryBot.create :like }
      it { expect(response.code).to eq('403') }
      it { JSON.parse(response.body)["error"] == "Unable to like" }
    end
  end
end