Find the smallest number and MOVE it to the front - 2

smallest.rb

# find the smalledst number in a given array of numbers
# then MOVE that number to the front of the array
# return the that same array

#RSpec
describe 'smallest_number_move_to_the_front' do
  let(:numbers) { [24,6,8,3,234,6,7,65] }
  let(:numbers2) { [24,6,8,234,6,7,65,734,-1,322,324,43213] }

  it "method is defined" do
    expect(defined? smallest_number_move_to_the_front).to eq 'method'
  end

  it "method takes a single argument" do
    expect(method(:smallest_number_move_to_the_front).arity).to eq 1
  end

  it 'returns a new array with the lowest number first' do
    expect(smallest_number_move_to_the_front(numbers)).to eq [3,24,6,8,234,6,7,65,]
  end

  it 'returns a new array with the lowest number first' do
    expect(smallest_number_move_to_the_front(numbers2)).to eq [-1,24,6,8,234,6,7,65,734,322,324,43213]
  end

end

# CODE
def smallest_number_move_to_the_front(array)
  lowest_number = array.select.min
  array.delete(lowest_number)
  array.unshift(lowest_number)
end