Sha256: 813898ed60cdcc185bcb05fa89c0d744890df60140716e2e320400b99e4f56d0
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Versions: 50
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Stored size: 1.52 KB
Contents
module StdStreamsHelper
def std_stream
Tempfile.new SecureRandom.uuid
end
# Capture STDOUT in a variable
#
# Given tempfiles are rewinded and unlinked after yield, so no cleanup
# required. You can read from the stream using `stdout.read`.
#
# Usage
#
# out_stream = Tempfile.new
# capture_stdout(out_stream) { do_something }
def capture_stdout(stdout)
original_stdout = $stdout.dup
$stdout.reopen stdout
yield
ensure
$stdout.reopen original_stdout
stdout.rewind
stdout.unlink
end
# Capture STDOUT and STDERR in variables
#
# Given tempfiles are rewinded and unlinked after yield, so no cleanup
# required. You can read from the stream using `stdout.read`.
#
# Usage
#
# out_stream = Tempfile.new
# err_stream = Tempfile.new
# capture_std_streams(out_stream, err_stream) { do_something }
def capture_std_streams(stdout, stderr)
original_stdout = $stdout.dup
$stdout.reopen stdout
original_stderr = $stderr.dup
$stderr.reopen stderr
yield
ensure
$stdout.reopen original_stdout
$stderr.reopen original_stderr
stdout.rewind
stdout.unlink
stderr.rewind
stderr.unlink
end
def silence
std_stream = Tempfile.new(SecureRandom.uuid)
original_stdout = $stdout.dup
original_stderr = $stderr.dup
$stdout.reopen std_stream
$stderr.reopen std_stream
yield
ensure
$stdout.reopen original_stdout
$stderr.reopen original_stderr
std_stream.rewind
std_stream.unlink
end
end
Version data entries
50 entries across 50 versions & 1 rubygems