bad rspec test

bad_spec.rb

it "should allow only strings that include the letter 'a'" do
  StringAllower.allowed?('a bed').should == true
  StringAllower.allowed?('my bed').should == false
  StringAllower.allowed?('single bed').should == false
  StringAllower.allowed?('a single bed').should == true
  StringAllower.allowed?('some car').should == true
  StringAllower.allowed?('some motorcycle').should == false
  ....
end

good_spec.rb

describe 'allowed?' do
  ['a bed', 'a single bed', 'some car'].each do |allowed_word|
    context "with allowed word: #{allowed_word}" do
      let(:word) { allowed_word }
      specify { StringAllower.allowed?(word).should be_true }
    end
  end

  ['my bed', 'single bed', 'some motorcycle'].each do |disallowed_word|
    context "with disallowed word: #{disallowed_word}" do
      let(:word) { disallowed_word }
      specify { StringAllower.allowed?(word).should be_false }
    end
  end
end