From: duerst@...
Date: 2014-10-29T05:15:14+00:00
Subject: [ruby-core:65979] [ruby-trunk - Bug #10430] Proc instead of String as error message doesn't work.

Issue #10430 has been updated by Martin D��rst.


Kouhei Sutou wrote:
> I've released new test-unit gem. It support Proc as user_message.
> 
> Should I update version in gems/bundled_gems?

It seem that Hiroshi has done this at r48180, and I have updated my checkout, but I still get the same error. I'm not sure why, but could it be because now both gems get installed? This is what gets shown at the end of 'make install-nodoc'

installing bundle gems:       /usr/local/lib/ruby/gems/2.2.0 (build_info, cache, doc, extensions, gems, specifications)
DL is deprecated, please use Fiddle
                              minitest-5.4.1.gem
                              minitest-5.4.2.gem
                              power_assert-0.1.4.gem
                              test-unit-3.0.1.gem
                              test-unit-3.0.3.gem


----------------------------------------
Bug #10430: Proc instead of String as error message doesn't work.
https://bugs.ruby-lang.org/issues/10430#change-49715

* Author: Martin D��rst
* Status: Open
* Priority: Normal
* Assignee: Kouhei Sutou
* Category: test
* Target version: current: 2.2.0
* ruby -v: ruby 2.2.0dev (2014-10-26 trunk 48146) [x86_64-cygwin]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
Revision r48113 introduced Procs to delay time-consuming generation of error messages. This is a good idea, but it doesn't work for me.

How to reproduce: Make a small change in lib/unicode_normalize/tables.rb. Any change should do; I changed "Q" to "QQ" in one instance. Run make install(-nodoc). Run ruby test/test_unicode_normalize.rb.

The result I get is as follows:

~~~
===============================================================================
Failure:
test_normalize_to_NFKD_from_source_with_nfkd(TestNormalize)
test/test_unicode_normalize.rb:38:in `block (2 levels) in generate_test_normalize'
test/test_unicode_normalize.rb:33:in `each'
test/test_unicode_normalize.rb:33:in `block in generate_test_normalize'
#<Proc:0x000006033229f0@test/test_unicode_normalize.rb:32>
<"Q"> expected but was
<"QQ">

diff:
? QQ
===============================================================================
~~~

The failure is expected (artificially generated). The problem is the line
`#<Proc:0x000006033229f0@test/test_unicode_normalize.rb:32>`
The Proc that is supposed to be evaluated to generate a more detailed error message (showing codepoints of the characters involved) is just converted to a String.

For reference, I'm using the standard bundled gems  minitest-5.4.1.gem, power_assert-0.1.4.gem, and test-unit-3.0.1.gem.




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