= Ruby Gem: ActiveRecord migration mock object for testing

Author:: Joel Parker Henderson, joelparkerhenderson@gmail.com
Copyright:: Copyright (c) 2009 Joel Parker Henderson
License:: CreativeCommons License, Non-commercial Share Alike
License:: LGPL, GNU Lesser General Public License

==Example Migration
  class CreateFoosMigration < ActiveRecordMigrationMock

   def self.up
     create_table 'foos', :force => true do |t|
       t.column :abc,  :integer
       t.column :def,  :string
     end
     add_index 'foos', 'abc'
   end

   def self.down
     drop_table 'foos'
   end

 end

==Example Usage
  CreateFoosMigration.up

  ActiveRecordMigration.has_table?('foos') => true
  ActiveRecordMigration.has_table?('bars') => false

  tables = ActiveRecordMigration.tables

  table = ActiveRecordMigration.tables['foo']

  table.has_column?('abc') => true
  table.has_column?('xyz') => false

  table.has_index?('abc') => true
  table.has_index?('def') => false

  columns = table.columns
  
  column = table.columns['abc']
  column.type => :integer

  column = table.columns['def']
  column.type => :string

  indexes = table.indexes
  index = table.indexes['abc']

  index.table_name => 'foos'
  index.column_name => 'abc'