nepalez/rspec-sqlimit: RSpec matcher to control SQL queries made by block of code

RSpec.describe "N+1 safety" do
  it "doesn't send unnecessary requests to db" do
    expect { User.create }.not_to exceed_query_limit(1)
  end

  it "can restrict the matcher using regex" do
    expect { User.create }.not_to exceed_query_limit(1).with(/^INSERT/)
  end
end

Source: nepalez/rspec-sqlimit: RSpec matcher to control SQL queries made by block of code