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Versions: 19
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Stored size: 1.18 KB
Contents
module FakeFS
# Kernel Module
module Kernel
@captives = { original: {}, hijacked: {} }
class << self
attr_accessor :captives
end
def self.hijack!
captives[:hijacked].each do |name, prc|
::Kernel.send(:remove_method, name.to_sym)
::Kernel.send(:define_method, name.to_sym, &prc)
::Kernel.send(:private, name.to_sym)
end
end
def self.unhijack!
captives[:original].each do |name, _prc|
::Kernel.send(:remove_method, name.to_sym)
::Kernel.send(:define_method, name.to_sym, proc do |*args, &block|
::FakeFS::Kernel.captives[:original][name].call(*args, &block)
end)
::Kernel.send(:private, name.to_sym)
end
end
private
def self.hijack(name, &block)
captives[:original][name] = ::Kernel.method(name.to_sym)
captives[:hijacked][name] = block || proc { |_args| }
end
hijack :open do |*args, &block|
if args.first.start_with? '|'
# This is a system command
::FakeFS::Kernel.captives[:original][:open].call(*args, &block)
else
name = args.shift
FakeFS::File.open(name, *args, &block)
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems