Class: Logging::Appenders::StringIo

Inherits:
IO show all
Defined in:
lib/logging/appenders/string_io.rb

Overview

This class provides an Appender that can write to a StringIO instance. This is very useful for testing log message output.

Defined Under Namespace

Modules: IoToS

Constant Summary

Constants included from Buffering

Buffering::DEFAULT_BUFFER_SIZE

Instance Attribute Summary collapse

Attributes included from Buffering

#auto_flushing, #buffer

Attributes inherited from Logging::Appender

#layout, #level, #name

Instance Method Summary collapse

Methods inherited from IO

#close, #flush

Methods included from Buffering

#flush, #immediate_at=

Methods inherited from Logging::Appender

#<<, #append, #close, #closed?, #flush, #inspect, #reopen

Constructor Details

#initialize(name, opts = {}) ⇒ StringIo

call-seq:

StringIo.new( name, opts = {} )

Creates a new StrinIo appender that will append log messages to a StringIO instance.



18
19
20
21
22
23
 
# File 'lib/logging/appenders/string_io.rb', line 18

def initialize( name, opts = {} )
  @sio = StringIO.new
  @sio.extend IoToS
  @pos = 0
  super(name, @sio, opts)
end

Instance Attribute Details

#sio ⇒ Object (readonly)

The StringIO instance the appender is writing to.



10
11
12
 
# File 'lib/logging/appenders/string_io.rb', line 10

def sio
  @sio
end

Instance Method Details

#clear ⇒ Object Also known as: reset

Clears the internal StringIO instance. All log messages are removed from the buffer.



28
29
30
31
32
33
34
 
# File 'lib/logging/appenders/string_io.rb', line 28

def clear
  sync {
    @pos = 0
    @sio.seek 0
    @sio.truncate 0
  }
end