As Ruby Developer I've had a pretty involved relationship with my Mac. I own iPads and iPhones since Apple started to make them. A few years back I told myself I was going to build apps for the Mac/iPhone/iPad but then reality sunk in when I started learning Objective-C and using XCode. The environment (and the language) felt like a trip back to 1995. If you are a Web developer used to working with dynamically-typed, lightweight languages, following agile practices like Test-Driven Development, and comfortable with a Unix Shell, then jumping into a development world with an ugly cousin of C++ and an IDE that looks like an F16 cockpit just doesn’t seem appealing. Luckily for us there is an alternative in RubyMotion, a Ruby-based toolchain for iOS that brings a Ruby on Rails style of development to the world of iOS application development. In this talk I will show you how you can use well engrained Ruby practices like TDD to build iOS Apps with RubyMotion.

1. by Brian Sam-Bodden
RubyMotion
TDDing iOS Apps for fun and profit with RubyMotion
http://www.integrallis.com
Thursday, May 2, 13

2. Thursday, May 2, 13

3. who’s this guy?
Life-long polyglot programmer
Rubyist since 2005
Integrallis since 2002
Lives in Phoenix, Not in WITSEC
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4. Let’s start with...
Confessions!
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5. I’m an Apple Fan Boy!
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6. I’m an Apple Fan Boy!
My Overpriced Precious!
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7. but I work with Ruby... every day
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8. I really, really wanted to make iPhone and iPad Apps
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9. ...but Apple insists you use XCode
I tried, I swear I did!
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10. but it felt very...
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11. an instinct defying experience...
...for a Rubyist
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12. an instinct defying experience...
Let’s paint some pixels here...
...for a Rubyist
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13. an instinct defying experience...
Let’s paint some pixels here...
Oh noes! ⌘-Z, ⌘-Z, ⌘-Z
...for a Rubyist
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14. ...and objective-C wasn’t for me
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15. Enter
http://www.rubymotion.com/
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16. A Commercial (*source available)
Ruby-based toolchain for iOS
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17. Based on the MacRuby distribution,
modified to target iOS
http://macruby.org/
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18. Generates compiled binaries that can be
distributed via Apple's App Store
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19. Created by Laurent Sansonetti
Formerly of Apple (7 years)
Worked on iLife and OS X
MacRuby Creator
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20. “We do not believe that Xcode makes a
good environment for Ruby development (or
development in general)”
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21. Who is RubyMotion’s target audience?
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22. (Ruby & Web) Developers new to iOS
Those comfortable with a *NIX Shell
and Agile Practices like BDD & TDD
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23. Why don’t you just build a Mobile Web App?
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24. “The most common reason for this is that [native]
apps are seen to be more convenient (55%), faster
(48%) and easier to browse (40%)”
http://econsultancy.com/us/blog/62326-85-of-consumers-favour-apps-over-mobile-websites
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26. Thursday, May 2, 13

27. Bonjour, Le Monde!
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28. Check 1, 2, 3
/> motion -v
1.35
/> motion create hello
Create hello
Create hello/.gitignore
Create hello/Rakefile
Create hello/app
Create hello/app/app_delegate.rb
Create hello/resources
Create hello/spec
Create hello/spec/main_spec.rb
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29. Rake-Driven Development
/> rake -T
rake archive # Create an .ipa archive
rake archive:distribution # Create an .ipa archive for distribution (AppStore)
rake build # Build everything
rake build:device # Build the device version
rake build:simulator # Build the simulator version
rake clean # Clear build objects
rake config # Show project config
rake ctags # Generate ctags
rake default # Build the project, then run the simulator
rake device # Deploy on the device
rake simulator # Run the simulator
rake spec # Same as 'spec:simulator'
rake spec:device # Run the test/spec suite on the device
rake spec:simulator # Run the test/spec suite on the simulator
rake static # Create a .a static library
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30. The REPL
Ruby Motion Enjoyment Reason #1
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31. The REPLHighlights
Interact with your running iOS application
Discover & Learn iOS APIs through Ruby
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32. Live Demo
Numero Uno
Where many a presenter has perished ...
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33. The Bacon
Ruby Motion Enjoyment Reason #2
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34. our vehicle for BDD & TDD
bundled with MacBacon
https://github.com/alloy/MacBacon
a small clone of RSpec
http://rspec.info/
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35. A slice of MacBacon
describe 'A new array' do
before do
@ary = Array.new
end
it 'should be empty' do
@ary.should.be.empty
@ary.should.not.include 1
end
it 'should have zero size' do
@ary.size.should.equal 0
@ary.size.should.be.close 0.1, 0.5
end
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36. A slice of MacBacon
describe 'A new array' do
before do
@ary = Array.new
end
it 'should be empty' do
@ary.should.be.empty
@ary.should.not.include 1
end
it 'should have zero size' do
@ary.size.should.equal 0
@ary.size.should.be.close 0.1, 0.5
end
it 'should raise on trying fetch any index' do
lambda { @ary.fetch 0 }.
should.raise(IndexError).
message.should.match(/out of array/)
# Alternatively:
should.raise(IndexError) { @ary.fetch 0 }
end
it 'should have an object identity' do
@ary.should.not.be.same_as Array.new
end
it 'should perform a long running operation' do
@ary.performSelector("addObject:", withObject:"soup", afterDelay:0.5)
wait 0.6 do
@ary.size.should.be 1
end
end
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37. RM TDDHighlights
Testing with Bacon
Red-Green-Refactor for iOS
Libraries: MotionModel & Formotion
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38. Live Demo
Numero Dos
Hey we made it this far!, what could go wrong now?
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39. Okonawa!
A Simple ToDo App
https://github.com/integrallis/okonawa
Let’s build something!
行わ
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40. Okonawa in Action
https://github.com/integrallis/okonawa
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41. Healthy, rapidly growing set of libraries
BubbleWrap, MotionModel, FormMotion,
Teacup, IB and many, many more
There’s a Gem for that!
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42. It’s happening people...
Rubyists are making iOS apps!
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43. http://37signals.com/svn/posts/3430-launch-the-official-basecamp-iphone-app
Basecamp for the iPhone
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44. https://itunes.apple.com/us/app/jukely/id590428284
Jukely
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45. https://itunes.apple.com/us/app/jukely/id590428284
Lines
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46. Thanks
All example code available at:
Watch out for an upcoming ebook at http://integrallis.com
https://github.com/integrallis/okonawa
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