Local Test Errors Differ Depending on Testing User's :PROMPT_MODE in .irbrc

[chadrschroeder]

Description

I noticed that when my .irbrc has different :PROMPT_MODE configurations, I get different numbers of test failures when I run bundle exec rake test:

:PROMPT_MODE	Failures
(No override specified)	19
:DEFAULT	0
:INF_RUBY	22
:NULL	22
:SIMPLE	19
:XMP	22

I can only get all tests to pass when I explicitly use IRB.conf[:PROMPT_MODE] = :DEFAULT. The tests that fail are ones that use run_ruby_file.

One example failure is:

Failure: test_irb_doesnt_echo_line_with_semicolon(TestIRB::EchoingTest):
  <"\r\n" +
  "From: /var/folders/sk/mh9kbvhx4l924d3w9zlhj5zc0000gq/T/irb-20230916-77007-psjqid.rb @ line 1 :\r\n" +
  "\r\n" +
  " => 1: binding.irb\r\n" +
  "\r\n" +
  "123123;\r\n" +
  "123123   ;\r\n" +
  "123123;   \r\n" +
  "if true\r\n" +
  "  123123\r\n" +
  "end;\r\n" +
  "'evaluation ends'\r\n" +
  "exit\r\n" +
  "irb(main):001> irb(main):002> irb(main):003> irb(main):004>                                   irb(main):007> \"evaluation ends\"\r\n" +
  "irb(main):008> "> was expected to include
  <"=> \"evaluation ends\"">.
/Users/username/dev/irb2/irb/test/irb/test_evaluation.rb:40:in `test_irb_doesnt_echo_line_with_semicolon'
     37:         type "exit"
     38:       end
     39:
  => 40:       assert_include(output, "=> \"evaluation ends\"")
     41:       assert_not_include(output, "=> 123123")
     42:     end
     43:   end

The test assertion expects to see => when a value is echoed in the prompt. But that won't always be there depending on the :PROMPT_MODE.

Other tests that fail are in TestIRB::DebugCommandTest.

It used to be possible to get all tests to pass without having any kind of :PROMPT_MODE override specified in .irbrc.

Result of irb_info

Ruby version: 3.2.1
IRB version: irb 1.8.1 (2023-09-04)
InputMethod: RelineInputMethod with Reline 0.3.8
.irbrc path: /Users/username/.rvm/rubies/ruby-3.2.1/.irbrc
RUBY_PLATFORM: x86_64-darwin20
LANG env: en_US.UTF-8
East Asian Ambiguous Width: 1

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Setting Files

Are you using ~/.irbrc and ~/.inputrc? Yes. Noted in description.