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require "cases/helper"
require 'support/connection_helper'
module ActiveRecord
class PostgresqlTransactionTest < ActiveRecord::PostgreSQLTestCase
self.use_transactional_tests = false
class Sample < ActiveRecord::Base
self.table_name = 'samples'
end
setup do
@connection = ActiveRecord::Base.connection
@connection.transaction do
@connection.drop_table 'samples', if_exists: true
@connection.create_table('samples') do |t|
t.integer 'value'
end
end
Sample.reset_column_information
end
teardown do
@connection.drop_table 'samples', if_exists: true
end
test "raises error when a serialization failure occurs" do
with_warning_suppression do
assert_raises(ActiveRecord::TransactionSerializationError) do
thread = Thread.new do
Sample.transaction isolation: :serializable do
Sample.delete_all
10.times do |i|
sleep 0.1
Sample.create value: i
end
end
end
sleep 0.1
Sample.transaction isolation: :serializable do
Sample.delete_all
10.times do |i|
sleep 0.1
Sample.create value: i
end
sleep 1
end
thread.join
end
end
end
protected
def with_warning_suppression
log_level = @connection.client_min_messages
@connection.client_min_messages = 'error'
yield
@connection.client_min_messages = log_level
end
end
end
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