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require "test/unit"
require "pathname"
require "rubygems"
begin
require_relative "../lib/helper"
require_relative "../lib/envutil"
rescue LoadError # ruby/ruby defines helpers differently
end
begin
require "pty"
rescue LoadError # some platforms don't support PTY
end
module IRB
class InputMethod; end
end
module TestIRB
RUBY_3_4 = Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.4.0.dev")
class TestCase < Test::Unit::TestCase
class TestInputMethod < ::IRB::InputMethod
attr_reader :list, :line_no
def initialize(list = [])
@line_no = 0
@list = list
end
def gets
@list[@line_no]&.tap {@line_no += 1}
end
def eof?
@line_no >= @list.size
end
def encoding
Encoding.default_external
end
def reset
@line_no = 0
end
end
def ruby_core?
!Pathname(__dir__).join("../../", "irb.gemspec").exist?
end
def save_encodings
@default_encoding = [Encoding.default_external, Encoding.default_internal]
@stdio_encodings = [STDIN, STDOUT, STDERR].map {|io| [io.external_encoding, io.internal_encoding] }
end
def restore_encodings
EnvUtil.suppress_warning do
Encoding.default_external, Encoding.default_internal = *@default_encoding
[STDIN, STDOUT, STDERR].zip(@stdio_encodings) do |io, encs|
io.set_encoding(*encs)
end
end
end
def without_rdoc(&block)
::Kernel.send(:alias_method, :irb_original_require, :require)
::Kernel.define_method(:require) do |name|
raise LoadError, "cannot load such file -- rdoc (test)" if name.match?("rdoc") || name.match?(/^rdoc\/.*/)
::Kernel.send(:irb_original_require, name)
end
yield
ensure
EnvUtil.suppress_warning {
::Kernel.send(:alias_method, :require, :irb_original_require)
::Kernel.undef_method :irb_original_require
}
end
end
class IntegrationTestCase < TestCase
LIB = File.expand_path("../../lib", __dir__)
TIMEOUT_SEC = 3
def setup
@envs = {}
@tmpfiles = []
unless defined?(PTY)
omit "Integration tests require PTY."
end
if ruby_core?
omit "This test works only under ruby/irb"
end
write_rc <<~RUBY
IRB.conf[:USE_PAGER] = false
RUBY
end
def teardown
@tmpfiles.each do |tmpfile|
File.unlink(tmpfile)
end
end
def run_ruby_file(&block)
cmd = [EnvUtil.rubybin, "-I", LIB, @ruby_file.to_path]
tmp_dir = Dir.mktmpdir
@commands = []
lines = []
yield
# Test should not depend on user's irbrc file
@envs["HOME"] ||= tmp_dir
@envs["XDG_CONFIG_HOME"] ||= tmp_dir
@envs["IRBRC"] = nil unless @envs.key?("IRBRC")
envs_for_spawn = @envs.merge('TERM' => 'dumb', 'TEST_IRB_FORCE_INTERACTIVE' => 'true')
PTY.spawn(envs_for_spawn, *cmd) do |read, write, pid|
Timeout.timeout(TIMEOUT_SEC) do
while line = safe_gets(read)
lines << line
# means the breakpoint is triggered
if line.match?(/binding\.irb/)
while command = @commands.shift
write.puts(command)
end
end
end
end
ensure
read.close
write.close
kill_safely(pid)
end
lines.join
rescue Timeout::Error
message = <<~MSG
Test timedout.
#{'=' * 30} OUTPUT #{'=' * 30}
#{lines.map { |l| " #{l}" }.join}
#{'=' * 27} END OF OUTPUT #{'=' * 27}
MSG
assert_block(message) { false }
ensure
FileUtils.remove_entry tmp_dir
end
# read.gets could raise exceptions on some platforms
# https://github.com/ruby/ruby/blob/master/ext/pty/pty.c#L721-L728
def safe_gets(read)
read.gets
rescue Errno::EIO
nil
end
def kill_safely pid
return if wait_pid pid, TIMEOUT_SEC
Process.kill :TERM, pid
return if wait_pid pid, 0.2
Process.kill :KILL, pid
Process.waitpid(pid)
rescue Errno::EPERM, Errno::ESRCH
end
def wait_pid pid, sec
total_sec = 0.0
wait_sec = 0.001 # 1ms
while total_sec < sec
if Process.waitpid(pid, Process::WNOHANG) == pid
return true
end
sleep wait_sec
total_sec += wait_sec
wait_sec *= 2
end
false
rescue Errno::ECHILD
true
end
def type(command)
@commands << command
end
def write_ruby(program)
@ruby_file = Tempfile.create(%w{irbtest- .rb})
@tmpfiles << @ruby_file
@ruby_file.write(program)
@ruby_file.close
end
def write_rc(content)
# Append irbrc content if a tempfile for it already exists
if @irbrc
@irbrc = File.open(@irbrc, "a")
else
@irbrc = Tempfile.new('irbrc')
@tmpfiles << @irbrc
end
@irbrc.write(content)
@irbrc.close
@envs['IRBRC'] = @irbrc.path
end
end
end
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