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require "cases/helper"
class ActiveSchemaTest < ActiveRecord::TestCase
def setup
ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
alias_method :execute_without_stub, :execute
remove_method :execute
def execute(sql, name = nil) return sql end
end
end
def teardown
ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
remove_method :execute
alias_method :execute, :execute_without_stub
end
end
def test_add_index
# add_index calls index_name_exists? which can't work since execute is stubbed
ActiveRecord::ConnectionAdapters::MysqlAdapter.send(:define_method, :index_name_exists?) do |*|
false
end
expected = "CREATE INDEX `index_people_on_last_name` ON `people` (`last_name`)"
assert_equal expected, add_index(:people, :last_name, :length => nil)
expected = "CREATE INDEX `index_people_on_last_name` ON `people` (`last_name`(10))"
assert_equal expected, add_index(:people, :last_name, :length => 10)
expected = "CREATE INDEX `index_people_on_last_name_and_first_name` ON `people` (`last_name`(15), `first_name`(15))"
assert_equal expected, add_index(:people, [:last_name, :first_name], :length => 15)
expected = "CREATE INDEX `index_people_on_last_name_and_first_name` ON `people` (`last_name`(15), `first_name`)"
assert_equal expected, add_index(:people, [:last_name, :first_name], :length => {:last_name => 15})
expected = "CREATE INDEX `index_people_on_last_name_and_first_name` ON `people` (`last_name`(15), `first_name`(10))"
assert_equal expected, add_index(:people, [:last_name, :first_name], :length => {:last_name => 15, :first_name => 10})
ActiveRecord::ConnectionAdapters::MysqlAdapter.send(:remove_method, :index_name_exists?)
end
def test_drop_table
assert_equal "DROP TABLE `people`", drop_table(:people)
end
if current_adapter?(:MysqlAdapter)
def test_create_mysql_database_with_encoding
assert_equal "CREATE DATABASE `matt` DEFAULT CHARACTER SET `utf8`", create_database(:matt)
assert_equal "CREATE DATABASE `aimonetti` DEFAULT CHARACTER SET `latin1`", create_database(:aimonetti, {:charset => 'latin1'})
assert_equal "CREATE DATABASE `matt_aimonetti` DEFAULT CHARACTER SET `big5` COLLATE `big5_chinese_ci`", create_database(:matt_aimonetti, {:charset => :big5, :collation => :big5_chinese_ci})
end
def test_recreate_mysql_database_with_encoding
create_database(:luca, {:charset => 'latin1'})
assert_equal "CREATE DATABASE `luca` DEFAULT CHARACTER SET `latin1`", recreate_database(:luca, {:charset => 'latin1'})
end
end
def test_add_column
assert_equal "ALTER TABLE `people` ADD `last_name` varchar(255)", add_column(:people, :last_name, :string)
end
def test_add_column_with_limit
assert_equal "ALTER TABLE `people` ADD `key` varchar(32)", add_column(:people, :key, :string, :limit => 32)
end
def test_drop_table_with_specific_database
assert_equal "DROP TABLE `otherdb`.`people`", drop_table('otherdb.people')
end
def test_add_timestamps
with_real_execute do
begin
ActiveRecord::Base.connection.create_table :delete_me do |t|
end
ActiveRecord::Base.connection.add_timestamps :delete_me
assert column_present?('delete_me', 'updated_at', 'datetime')
assert column_present?('delete_me', 'created_at', 'datetime')
ensure
ActiveRecord::Base.connection.drop_table :delete_me rescue nil
end
end
end
def test_remove_timestamps
with_real_execute do
begin
ActiveRecord::Base.connection.create_table :delete_me do |t|
t.timestamps
end
ActiveRecord::Base.connection.remove_timestamps :delete_me
assert !column_present?('delete_me', 'updated_at', 'datetime')
assert !column_present?('delete_me', 'created_at', 'datetime')
ensure
ActiveRecord::Base.connection.drop_table :delete_me rescue nil
end
end
end
private
def with_real_execute
#we need to actually modify some data, so we make execute point to the original method
ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
alias_method :execute_with_stub, :execute
remove_method :execute
alias_method :execute, :execute_without_stub
end
yield
ensure
#before finishing, we restore the alias to the mock-up method
ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
remove_method :execute
alias_method :execute, :execute_with_stub
end
end
def method_missing(method_symbol, *arguments)
ActiveRecord::Base.connection.send(method_symbol, *arguments)
end
def column_present?(table_name, column_name, type)
results = ActiveRecord::Base.connection.select_all("SHOW FIELDS FROM #{table_name} LIKE '#{column_name}'")
results.first && results.first['Type'] == type
end
end
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