Rspec cover class

Rspec cover class

lib/tasks/dummy.rake

namespace :db do
  desc "Add system data"
  task dummy: :environment do
    SeedDummyData.run
  end
end

class SeedDummyData
  
  class << self
    def run
      do_something
    end

    def do_something
      ...here your logic bla bla bla
    end
  end
end

spec/tasks/seed_dummy_data_spec.rb

require "spec_helper"

describe "Seed dummy data task" do
  before(:all) do
    Rake::Task["db:dummy"].invoke
  end

  it "should populate 18 approaches" do
    expect(Approach.count).to eq 17
  end
end