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|
# frozen_string_literal: false
require 'test/unit'
require 'irb'
require 'irb/ext/save-history'
require 'readline'
module TestIRB
class TestHistory < Test::Unit::TestCase
def setup
IRB.conf[:RC_NAME_GENERATOR] = nil
end
def teardown
IRB.conf[:RC_NAME_GENERATOR] = nil
end
class TestInputMethod < ::IRB::InputMethod
HISTORY = Array.new
include IRB::HistorySavingAbility
attr_reader :list, :line_no
def initialize(list = [])
super("test")
@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
def winsize
[10, 20]
end
end
def test_history_save_1
omit "Skip Editline" if /EditLine/n.match(Readline::VERSION)
IRB.conf[:SAVE_HISTORY] = 1
assert_history(<<~EXPECTED_HISTORY, <<~INITIAL_HISTORY, <<~INPUT)
exit
EXPECTED_HISTORY
1
2
3
4
INITIAL_HISTORY
5
exit
INPUT
end
def test_history_save_100
omit "Skip Editline" if /EditLine/n.match(Readline::VERSION)
IRB.conf[:SAVE_HISTORY] = 100
assert_history(<<~EXPECTED_HISTORY, <<~INITIAL_HISTORY, <<~INPUT)
1
2
3
4
5
exit
EXPECTED_HISTORY
1
2
3
4
INITIAL_HISTORY
5
exit
INPUT
end
def test_history_save_bignum
omit "Skip Editline" if /EditLine/n.match(Readline::VERSION)
IRB.conf[:SAVE_HISTORY] = 10 ** 19
assert_history(<<~EXPECTED_HISTORY, <<~INITIAL_HISTORY, <<~INPUT)
1
2
3
4
5
exit
EXPECTED_HISTORY
1
2
3
4
INITIAL_HISTORY
5
exit
INPUT
end
def test_history_save_minus_as_infinity
omit "Skip Editline" if /EditLine/n.match(Readline::VERSION)
IRB.conf[:SAVE_HISTORY] = -1 # infinity
assert_history(<<~EXPECTED_HISTORY, <<~INITIAL_HISTORY, <<~INPUT)
1
2
3
4
5
exit
EXPECTED_HISTORY
1
2
3
4
INITIAL_HISTORY
5
exit
INPUT
end
private
def assert_history(expected_history, initial_irb_history, input)
backup_verbose, $VERBOSE = $VERBOSE, nil
backup_home = ENV["HOME"]
IRB.conf[:LC_MESSAGES] = IRB::Locale.new
actual_history = nil
Dir.mktmpdir("test_irb_history_#{$$}") do |tmpdir|
ENV["HOME"] = tmpdir
open(IRB.rc_file("_history"), "w") do |f|
f.write(initial_irb_history)
end
io = TestInputMethod.new
io.class::HISTORY.clear
io.load_history
io.class::HISTORY.concat(input.split)
io.save_history
io.load_history
open(IRB.rc_file("_history"), "r") do |f|
actual_history = f.read
end
end
assert_equal(expected_history, actual_history, <<~MESSAGE)
expected:
#{expected_history}
but actual:
#{actual_history}
MESSAGE
ensure
$VERBOSE = backup_verbose
ENV["HOME"] = backup_home
end
def with_temp_stdio
Tempfile.create("test_readline_stdin") do |stdin|
Tempfile.create("test_readline_stdout") do |stdout|
yield stdin, stdout
end
end
end
end
end if not RUBY_PLATFORM.match?(/solaris|mswin|mingw/i)
|
