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Versions: 13
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Contents
require 'stringio'
# a module for suppressing or capturing STDOUT or STDERR.
# useful when shelling out to "noisy" applications or to suppress
# output during tests.
module NoStdout #:nodoc:all
module InstanceMethods
# Suppresses or redirects STDOUT inside the given block.
# supply an IO of your own to capture STDOUT, otherwise it's put
# in a new StringIO object.
def no_stdout ( to = StringIO.new('','r+'), &block )
orig_stdout = $stdout
$stdout = @alt_stdout = to
result = yield
$stdout = orig_stdout
result
end
# returns the contents of STDOUT from the previous usage of
# no_stdout, or nil
def last_stdout
return nil unless @alt_stdout
@alt_stdout.rewind
@alt_stdout.read
end
## COPIED FROM ABOVE ####
# Suppresses or redirects STDERR inside the given block.
# supply an IO of your own to capture STDERR, otherwise it's put
# in a new StringIO object.
def no_stderr ( to = StringIO.new('','r+'), &block )
orig_stderr = $stderr
$stderr = @alt_stderr = to
result = yield
$stderr = orig_stderr
result
end
# returns the contents of STDERR from the previous usage of
# no_stderr, or nil
def last_stderr
return nil unless @alt_stderr
@alt_stderr.rewind
@alt_stderr.read
end
end
def self.included klass
klass.class_eval do
include InstanceMethods
end
end
end
Version data entries
13 entries across 13 versions & 2 rubygems