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require File.dirname(__FILE__) + '/abstract_unit'
require 'stringio'
class BufferedLoggerTest < Test::Unit::TestCase
def setup
@message = "A debug message"
@integer_message = 12345
@output = StringIO.new
@logger = ActiveSupport::BufferedLogger.new(@output)
end
def test_should_log_debugging_message_when_debugging
@logger.level = Logger::DEBUG
@logger.add(Logger::DEBUG, @message)
assert @output.string.include?(@message)
end
def test_should_not_log_debug_messages_when_log_level_is_info
@logger.level = Logger::INFO
@logger.add(Logger::DEBUG, @message)
assert ! @output.string.include?(@message)
end
def test_should_add_message_passed_as_block_when_using_add
@logger.level = Logger::INFO
@logger.add(Logger::INFO) {@message}
assert @output.string.include?(@message)
end
def test_should_add_message_passed_as_block_when_using_shortcut
@logger.level = Logger::INFO
@logger.info {@message}
assert @output.string.include?(@message)
end
def test_should_convert_message_to_string
@logger.level = Logger::INFO
@logger.info @integer_message
assert @output.string.include?(@integer_message.to_s)
end
def test_should_convert_message_to_string_when_passed_in_block
@logger.level = Logger::INFO
@logger.info {@integer_message}
assert @output.string.include?(@integer_message.to_s)
end
def test_should_not_evaluate_block_if_message_wont_be_logged
@logger.level = Logger::INFO
evaluated = false
@logger.add(Logger::DEBUG) {evaluated = true}
assert evaluated == false
end
def test_should_not_mutate_message
message_copy = @message.dup
@logger.info @message
assert_equal message_copy, @message
end
[false, nil, 0].each do |disable|
define_method "test_disabling_auto_flush_with_#{disable.inspect}_should_buffer_until_explicit_flush" do
@logger.auto_flushing = disable
4.times do
@logger.info 'wait for it..'
assert @output.string.empty?, @output.string
end
@logger.flush
assert !@output.string.empty?, @logger.buffer.size
end
define_method "test_disabling_auto_flush_with_#{disable.inspect}_should_flush_at_max_buffer_size_as_failsafe" do
@logger.auto_flushing = disable
assert_equal ActiveSupport::BufferedLogger::MAX_BUFFER_SIZE, @logger.auto_flushing
(ActiveSupport::BufferedLogger::MAX_BUFFER_SIZE - 1).times do
@logger.info 'wait for it..'
assert @output.string.empty?, @output.string
end
@logger.info 'there it is.'
assert !@output.string.empty?, @logger.buffer.size
end
end
def test_should_auto_flush_every_n_messages
@logger.auto_flushing = 5
4.times do
@logger.info 'wait for it..'
assert @output.string.empty?, @output.string
end
@logger.info 'there it is.'
assert !@output.string.empty?, @output.string
end
end
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