Module: Reality::Logging::Assertions

Defined in:
lib/reality/logging.rb

Overview

Module that should be mixed into base test class to test dependent libraries. It is expected that the class this is mixed into supplies a assert_raise method.

Instance Method Summary collapse

Instance Method Details

#assert_logging_error(log_container, expected_message, &block) ⇒ Object

For the specified log container, capture the log output during blocks execution and match specified message. Also ensure an exception is raised with the same message



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# File 'lib/reality/logging.rb', line 117

def assert_logging_error(log_container, expected_message, &block)
  raise 'assert_logging_error called but no block supplied.' unless block_given?
  assert_logging_message(log_container, expected_message) do
    assert_raise(RuntimeError.new(expected_message)) do
      yield block
    end
  end
end

#assert_logging_message(log_container, expected_message, &block) ⇒ Object

For the specified log container, capture the log output during blocks execution and match specified message. A new line is appended to expected_message as the logging system appends one.



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# File 'lib/reality/logging.rb', line 104

def assert_logging_message(log_container, expected_message, &block)
  raise 'assert_logging_message called but no block supplied.' unless block_given?

  result = capture_logging(log_container) do
    yield block
  end

  assert_equal "#{expected_message}\n", result
end

#capture_logging(log_container, &block) ⇒ Object

for the specified log container capture the log output during blocks execution and return as a string



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# File 'lib/reality/logging.rb', line 84

def capture_logging(log_container, &block)
  raise 'capture_logging called but no block supplied.' unless block_given?
  logger = log_container.const_get(:Logger)

  logdev = logger.instance_variable_get('@logdev')
  original_dev = logdev.instance_variable_get('@dev')

  capture_io = StringIO.new
  begin
    logdev.instance_variable_set('@dev', capture_io)
    yield block
    return capture_io.string
  ensure
    logdev.instance_variable_set('@dev', original_dev)
  end
end