assert_valid_key.rb

# Adds a convienence method to the Hash class
# Allows you to check if a hash has a valid key and value.

class Hash
  def assert_valid_key?(key)
    self.symbolize_keys.has_key?(key.to_sym) && !self[key].blank?
  end
end

# Test it

require 'spec_helper'
describe Hash do
  it "should have a valid key" do
    {:valid_key => "YES"}.assert_valid_key?(:valid_key).should == true
  end

  it "should not have a valid key" do
    {}.assert_valid_key?(:bs_key).should == false
  end
end