Ruby Iconv可与irb和ruby调试器一起使用，但不能在单元测试中使用 [英] Ruby Iconv works with irb and ruby debugger but not in a unit test

问题描述

我正在Ubuntu 10.04 64位上运行带有Rails 2.3.5的Ruby 1.8.7.我编写了一种方法，该方法应采用这样的字符串"École À la Découverte"并输出诸如"ecole_a_la_decouverte"这样的文件系统名称:

I'm running Ruby 1.8.7 with Rails 2.3.5 on Ubuntu 10.04 64-bit. I've written a method that should take a string like this, "École À la Découverte" and output a file-system name like this "ecole_a_la_decouverte":

(Iconv.new('US-ASCII//TRANSLIT', 'utf-8').iconv "École À la Découverte").downcase.split.join('_')

当我在代码中测试此行时，测试总是失败，指出"cole_la_dcouverte"不等于"ecole_a_la_decouverte".奇怪的是，如果我插入调试器行并使用调试器控制台，则测试通过.同样，在irb和./script/console中手动运行此行似乎可行.

When I test this line in my code, the test always fails saying that "cole_la_dcouverte" is unequal to "ecole_a_la_decouverte". The odd thing is that if I insert a debugger line and use the debugger console the test passes. As well, running this line manually in irb and ./script/console seems to work.

有人知道发生了什么，为什么这个测试失败了?我唯一的想法是，包括调试器或irb会以某种方式增加对UTF-8的支持，但我不知所措，想知道下一步该怎么做.

Does anyone know what's going on and why this test is failing? My only thought is that including the debugger or irb somehow adds more support for UTF-8 but I'm at a loss to figure out where to go next.

提前谢谢！

推荐答案

这似乎是语言环境的问题-在php中也观察到了同样的问题，如果有的话，其中的iconv函数有时不起作用没有语言环境设置(无论任何语言环境).

This appears to be a problem with the locale - the same which is also observed in php, where (sometimes?) iconv functions don't work if there is no locale set (whatever the locale).

请参见 ruby​​-forum.com上的主题，其中建议使用级别修复程序，该级别修复程序允许您使用C中的setlocale()设置语言环境.

See a thread on this on ruby-forum.com where a low-level fix is suggested which allows you to set a locale using setlocale() in C.

另一建议是安装语言环境gem .

这篇关于Ruby Iconv可与irb和ruby调试器一起使用，但不能在单元测试中使用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！