examples_spec.rb

require "spec_helper"

describe "group 1" do
  it "group 1 example 1" do
  end

  it "group 1 example 2" do
  end
end

describe "group 2" do
  it "group 2 example 1" do
  end
end

filtering_examples_spec.rb

require "spec_helper"

describe "group 1" do
  it "group 1 example 1", :focus => true do
  end

  it "group 1 example 2" do
  end
end

describe "group 2" do
  it "group 2 example 1" do
  end
end

spec_helper.rb

# ...

RSpec.configure do |c|
  c.filter_run :focus => true
  c.run_all_when_everything_filtered = true
end