This document summarizes Kuniaki Igarashi's everyday life with Ruby. It discusses the tools he uses like Web Console, Chrome Developer Tools, byebug and footnotes. It also describes some small Ruby projects he created, like a weather notification script and Candy Bottle for collecting tweets about him. The document ends by explaining his hobby of contributing test cases to Ruby Core by sending pull requests with new tests.

1. My everyday life
with ruby
Kuniaki IGARASHI
17th March 2016 Taipei.rb

2. 五十嵐 邦明
Kuniaki IGARASHI
spice life, Inc. CTO
From Japan, Tokyo
Rails engineer
RailsGirls coach in Japan
Rails寺子屋 workshop founder
github: igaiga
twitter: igaiga555
facebook: kuniaki.igarashi

3. RubyConf臺灣

4. • Web console
• Chrome Developer tools
• byebug
• footnotes
• g
• pry-rails
• awesome print
• tonnels
• letter opener
https://speakerdeck.com/igaiga/rubyconftaiwan2015

10. TMIX

11. 5xruby x TMIX

12. We ve made RubyKaigi T-shirts

13. Lonely Operator T-shirts

14. STEERS

15. I m making a little useful
tools for me. (only me)
I ll talk about these things.
Ruby is very useful tool.
About this talk

16. Weather
Forecast
Push
Notification

17. The codes is only 40 lines.
8 hours to make.
https://github.com/igaiga/weather

18. The reason is using a library
to notice iPhone.

19. Codes to notice
https://gist.github.com/4160992

20. It s not great work,
but I m happy to
know weather
forecast
without app
on every morning.
*・゜ﾟ・*:.｡.(*'▽'*)ﾊﾟｧｧ.｡.:*・゜ﾟ・*

21. Candy bottle
Collect tweets that mentions about me

22. Candy bottle
Setting some keywords
When my followers say
the keywords, send a
notification to my iPhone.

24. Candy bottle
Obtained knowledge :
There re few tweets about me

25. https://github.com/igaiga/candy-bottle

26. In this year,
my hobby is...

27. Sending test codes to Ruby
String#rstrip, lstrip test
https://github.com/ruby/ruby/pull/1175
https://github.com/ruby/ruby/pull/1174
String#chr test
https://github.com/ruby/ruby/pull/1179
String#ord test
https://github.com/ruby/ruby/pull/1181
Numeric#nonzero? test
https://github.com/ruby/ruby/pull/1187
Hash.try_convert test
https://github.com/ruby/ruby/pull/1190
ENV#reject!, select! test
https://github.com/ruby/ruby/pull/1201
File#lstat test
https://github.com/ruby/ruby/pull/1231

28. http://www.slideshare.net/hsbt/practical-testing-of-ruby-core

29. hsbt-san said
Documentation is hard,
Testing is easy

30. $ git clone https://github.com/igaiga/ruby
Your forked repository↑
$ cd ruby
$ autoconf
$ ./configure ̶disable-install-doc
If you use mac and got error of openssl, you can try to use brew s openssl
$ ./configure ̶with-openssl-dir=`brew --prefix openssl` -disable-install-doc
$ make -j
$ make check
or
$ make test-all
If you d like to run a test
$ make test-all TESTS= ruby/test_string.rb'
Ruby test files are in test/ruby/ folders.
How to run ruby s test

31. Approach
Searching methods without test
1. Ask to ruby object
2. Find in test files
3. Compare 1 and 2

32. Searching methods without test
1. ask to ruby object
Objects tell us methods they have
irb> String.instance_methods(false)
We can get instance_methods
in String class object➡

33. Searching methods without test
2. Find in test files
In almost case, tests is written in
test/ruby/test_#{class}.rb
For example String : test/ruby/test_string.rb
In almost case,
test method names are
test_#{method}

34. Searching methods without test
2. Find in test files
ok, write a ruby code!
$1 : regex matching area (.+)
https://gist.github.com/igaiga/0caa82300975865ee94b

35. Searching methods without test
3. Compare 1 and 2
We can get testless methods by
array1 - array2
array1: methods ask to object
array2: methods find by test file
But I encountered some problems...

36. Searching methods without test
Problems
Some methods are out of the rule.
For example String: test_m17n.rb, test_unicode_normalize.rb
Some methods have alias name and
written test code in a side only.
For example Hash#merge! and Hash#update
So we need check by myself.
But it s easier to find testless methods
than seeing with my own eyes.

37. Write test codes
The spec and sample written in source code.
They re good for test cases.
string.c
test_string.rb

38. How to send patches to Ruby?
You can use github pull request
You can contribute to Ruby. (｀・ω・́)b

39. https://github.com/igaiga/method_finder

40. Ruby makes my life better.
So I'd like to make Ruby better.

41. 五十嵐 邦明
Kuniaki IGARASHI
spice life, Inc. CTO
github: igaiga
twitter: igaiga555
facebook: kuniaki.igarashi
就這樣囉
感謝大家!!