Sha256: fde3afa049dccc7bc457ce3a76ce5bb48dc6b248e44276d20ee146f8bd04d66c
Contents?: true
Size: 1.19 KB
Versions: 50
Compression:
Stored size: 1.19 KB
Contents
require 'set'
require 'delegate'
module RegexpParserSpec
class Warning
class UnexpectedWarnings < StandardError
MSG = 'Unexpected warnings: %s'.freeze
def initialize(warnings)
super(MSG % warnings.join("\n"))
end
end
class Filter
def initialize(whitelist)
@whitelist = whitelist
end
def assert_expected_warnings_only
original = $stderr
$stderr = Extractor.new(original, @whitelist)
yield
assert_no_warnings($stderr.warnings)
ensure
$stderr = original
end
private
def assert_no_warnings(warnings)
raise UnexpectedWarnings, warnings.to_a if warnings.any?
end
end
class Extractor < DelegateClass(IO)
PATTERN = /\A(?:.+):(?:\d+): warning: (?:.+)\n\z/
def initialize(io, whitelist)
@whitelist = whitelist
@warnings = Set.new
super(io)
end
def write(message)
return super if PATTERN !~ message
warning = message.chomp
@warnings << warning if @whitelist.none?(&warning.method(:include?))
self
end
def warnings
@warnings.dup.freeze
end
end
end
end
Version data entries
50 entries across 37 versions & 9 rubygems