Sources from Good RSpec

good_rspec.rb

# correct
describe User do
  let (:user) { User.new }

  context "when name is empty" do
    it "should not be valid" do
      expect(user.valid?).to be_false
    end

    it "should not save" do
      expect(user.save).to be_false
    end
  end

  context "when name is not empty" do
    let (:user) { User.new(:name => "Alex") }

    it "should be valid" do
      expect(user.valid?).to be_true
    end

    it "should save" do
      expect(user.save).to be_true
    end
  end
end