Vim script for converting from test-spec to rspec

convert.vim

:2,3s/context "\(.*\)".*/describe \1 do/
:2,3s/context '\(.*\)'.*/describe \1 do/
:%s/\.be\.nil/ be_nil/g
:%s/\.be nil/ be_nil/g
:%s/\.be true/ be_true/g
:%s/\.be(true)/ be_true/g
:%s/\.equal(true)/ be_true/g
:%s/\.be false/ be_false/g
:%s/\.be(false)/ be_false/g
:%s/\.equal(false)/ be_false/g
:%s/\.equal(\(.*\))/ == \1/g
:%s/\.equal/ ==/
:%s/test_helper/spec_helper/
:%s/specify/it/
:%s/, ActiveSupport::TestCase//g
:%s/setup do/before(:each) do/
:%s/\.be\./ be_/
:%s/\.be / ==/
:%s/\.be(\(.*\))/ == \1/g
:%s/should\.not/should_not/g
:%s/should\.include \(.*\)/should include(\1)/g
:%s/should_not\.include \(.*\)/should_not include(\1)/g
:%s/should\.respond_to \(.*\)/should respond_to(\1)/g
:%s/should_not\.respond_to \(.*\)/should_not respond_to(\1)/g
:%s/\(be_.*\)?/\1/g
:w