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class ActiveSchemaTest < ActiveRecord::TestCase
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ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
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alias_method :execute_without_stub, :execute
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def execute(sql, name = nil) return sql end
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ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
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remove_method :execute
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alias_method :execute, :execute_without_stub
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assert_equal "DROP TABLE `people`", drop_table(:people)
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if current_adapter?(:MysqlAdapter)
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def test_create_mysql_database_with_encoding
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assert_equal "CREATE DATABASE `matt` DEFAULT CHARACTER SET `utf8`", create_database(:matt)
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assert_equal "CREATE DATABASE `aimonetti` DEFAULT CHARACTER SET `latin1`", create_database(:aimonetti, {:charset => 'latin1'})
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assert_equal "CREATE DATABASE `matt_aimonetti` DEFAULT CHARACTER SET `big5` COLLATE `big5_chinese_ci`", create_database(:matt_aimonetti, {:charset => :big5, :collation => :big5_chinese_ci})
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def test_recreate_mysql_database_with_encoding
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create_database(:luca, {:charset => 'latin1'})
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assert_equal "CREATE DATABASE `luca` DEFAULT CHARACTER SET `latin1`", recreate_database(:luca, {:charset => 'latin1'})
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assert_equal "ALTER TABLE `people` ADD `last_name` varchar(255)", add_column(:people, :last_name, :string)
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def test_add_column_with_limit
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assert_equal "ALTER TABLE `people` ADD `key` varchar(32)", add_column(:people, :key, :string, :limit => 32)
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def test_drop_table_with_specific_database
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assert_equal "DROP TABLE `otherdb`.`people`", drop_table('otherdb.people')
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def test_add_timestamps
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ActiveRecord::Base.connection.create_table :delete_me do |t|
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ActiveRecord::Base.connection.add_timestamps :delete_me
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assert column_present?('delete_me', 'updated_at', 'datetime')
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assert column_present?('delete_me', 'created_at', 'datetime')
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ActiveRecord::Base.connection.drop_table :delete_me rescue nil
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def test_remove_timestamps
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ActiveRecord::Base.connection.create_table :delete_me do |t|
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ActiveRecord::Base.connection.remove_timestamps :delete_me
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assert !column_present?('delete_me', 'updated_at', 'datetime')
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assert !column_present?('delete_me', 'created_at', 'datetime')
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ActiveRecord::Base.connection.drop_table :delete_me rescue nil
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#we need to actually modify some data, so we make execute point to the original method
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ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
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alias_method :execute_with_stub, :execute
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alias_method :execute, :execute_without_stub
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#before finishing, we restore the alias to the mock-up method
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ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
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alias_method :execute, :execute_with_stub
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def method_missing(method_symbol, *arguments)
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ActiveRecord::Base.connection.send(method_symbol, *arguments)
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def column_present?(table_name, column_name, type)
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results = ActiveRecord::Base.connection.select_all("SHOW FIELDS FROM #{table_name} LIKE '#{column_name}'")
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results.first && results.first['Type'] == type