Effective Testing with Ruby

May 25, 2012Download as key, pdf1 like794 views

The document discusses testing strategies for an agile development team at YourGolf Online Inc. It recommends using Ruby for testing due to the large number of useful testing libraries and tools available for Ruby, including Rspec, Timecop, Factory Girl, Capybara, Capybara-webkit, and VCR. Timecop allows testing time-dependent code by simulating time travel. Factory Girl helps generate test data without worrying about uniqueness. Capybara and Capybara-webkit allow writing acceptance tests that simulate user interactions. VCR records HTTP interactions for fast, deterministic tests.

Eﬀective Testing
with Ruby

(c)2012 YourGolf Online Inc. All Rights Reserved.

Self Introduction
✴Name: Akira Sosa
✴I m working at YourGolf Online Inc.
✴I m responsible for development

Currently
✴Providing No.1 smart phone application
for golfers
✴The number of downloads is over
1,000,000!!

In the future
✴We are planing to launch SNS platform
for golfers all around the world.

We had an issue
Our environment changes more and
more quickly.

However, we have to continue
providing our value to the world.

YourGolf Development
AGILE!!

(c)2012 YourGolf Online Inc. All Rights Reserved.

Why Testing?
In Agile Development

• We are testing
repeatedly.

• Small team without
specialist.

(c)2012 YourGolf Online Inc. All Rights Reserved.

Why Testing?
In Agile Development

Analyst
• We are testing Tester Developer
repeatedly.

• Small team without
specialist. Analyst
Tester Developer

(c)2012 YourGolf Online Inc. All Rights Reserved.

Why Ruby?
• Ruby community is high-quality and
active community.

• So, there are a lot of useful testing
libraries and tools.

(c)2012 YourGolf Online Inc. All Rights Reserved.

Top Languages on github

(c)2012 YourGolf Online Inc. All Rights Reserved.

Libraries and Tools
• Rspec
• Timecop
• Factory Girl
• Capybara, Capybara-webkit
• VCR

(c)2012 YourGolf Online Inc. All Rights Reserved.

Timecop
• It provides "time travel" and "time freezing"
capabilities, making it dead simple to test time-
dependent code.

(c)2012 YourGolf Online Inc. All Rights Reserved.

Timecop
• It provides "time travel" and "time freezing"
capabilities, making it dead simple to test time-
dependent code.

$ sudo date 021423002005

(c)2012 YourGolf Online Inc. All Rights Reserved.

Timecop
• It provides "time travel" and "time freezing"
capabilities, making it dead simple to test time-
dependent code.

$ sudo date 021423002005

He should use Timecop!

(c)2012 YourGolf Online Inc. All Rights Reserved.

Timecop
describe "API rate limit" do
context "when accessed more than 100 times" do
before do
@rate_limit = Factory.create(:rate_limit, count: 101)
end

it "will be not available" do
@rate_limit.exceeded?.should be_true
end

it "can be reseted after 1 hour" do
Timecop.travel(Time.now + 1.hours + 1.minutes)
@rate_limit.exceeded?.should be_false
end
end
end

(c)2012 YourGolf Online Inc. All Rights Reserved.

Factory Girl
• Factory Girl is a ﬁxtures replacement
with a straightforward deﬁnition syntax.

I m tired of ﬁxture ﬁles.
Help me, please!

Factory Girl can help him.

(c)2012 YourGolf Online Inc. All Rights Reserved.

$Factory Deﬁnition FactoryGirl.define do factory :user do sequence(:email) {|n| "email#{n}@factory.com" } factory :admin { admin true } end generates unique email factory :post do title "My Post" association :user end end Client Code describe User do it "can love each other" do no need to care for the jack = FactoryGirl.create(:user) uniqueness rose = FactoryGirl.create(:user) jack.girl_friend = rose jack.loves?(rose).should be_true end end$

Factory Deﬁnition
FactoryGirl.define do
factory :user do
sequence(:email) {|n| "email#{n}@factory.com" }
factory :admin { admin true }
end

factory :post do
title "My Post"
association
association :user
end
end

Client Code
describe Post do can deﬁne the association easily
it "belongs to user" do
post = FactoryGirl.create(:post)
post.user.should be
end
end

VCR
• It records your test suite's HTTP
interactions and replay them during
future test runs for fast, deterministic,
accurate tests.

describe "VCR example group metadata", :vcr do
it 'records an http request' do
make_http_request.should == 'Hello'
end
end

(c)2012 YourGolf Online Inc. All Rights Reserved.

Cam on nhieu!

(c)2012 YourGolf Online Inc. All Rights Reserved.

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Effective Testing with Ruby

2. Self Introduction ✴Name: Akira Sosa ✴I m working at YourGolf Online Inc. ✴I m responsible for development

3. Currently ✴Providing No.1 smart phone application for golfers ✴The number of downloads is over 1,000,000!!

4. In the future ✴We are planing to launch SNS platform for golfers all around the world.

5. We had an issue Our environment changes more and more quickly. However, we have to continue providing our value to the world.

16. Timecop • It provides "time travel" and "time freezing" capabilities, making it dead simple to test time- dependent code. $ sudo date 021423002005 He should use Timecop! (c)2012 YourGolf Online Inc. All Rights Reserved.

17. Timecop describe "API rate limit" do context "when accessed more than 100 times" do before do @rate_limit = Factory.create(:rate_limit, count: 101) end it "will be not available" do @rate_limit.exceeded?.should be_true end it "can be reseted after 1 hour" do Timecop.travel(Time.now + 1.hours + 1.minutes) @rate_limit.exceeded?.should be_false end end end (c)2012 YourGolf Online Inc. All Rights Reserved.

18. Timecop describe "API rate limit" do context "when accessed more than 100 times" do before do @rate_limit = Factory.create(:rate_limit, count: 101) end it "will be not available" do @rate_limit.exceeded?.should be_true end it "can be reseted after 1 hour" do Timecop.travel(Time.now + 1.hours + 1.minutes) @rate_limit.exceeded?.should be_false end end end (c)2012 YourGolf Online Inc. All Rights Reserved.

19. Timecop describe "API rate limit" do context "when accessed more than 100 times" do before do @rate_limit = Factory.create(:rate_limit, count: 101) end it "will be not available" do @rate_limit.exceeded?.should be_true end it "can be reseted after 1 hour" do Timecop.travel(Time.now + 1.hours + 1.minutes) @rate_limit.exceeded?.should be_false end end end (c)2012 YourGolf Online Inc. All Rights Reserved.

20. Timecop describe "API rate limit" do context "when accessed more than 100 times" do before do @rate_limit = Factory.create(:rate_limit, count: 101) end it "will be not available" do @rate_limit.exceeded?.should be_true end it "can be reseted after 1 hour" do Timecop.travel(Time.now + 1.hours + 1.minutes) @rate_limit.exceeded?.should be_false end end end (c)2012 YourGolf Online Inc. All Rights Reserved.

21. Factory Girl • Factory Girl is a fixtures replacement with a straightforward definition syntax. I m tired of fixture files. Help me, please! Factory Girl can help him. (c)2012 YourGolf Online Inc. All Rights Reserved.

22. Factory Deﬁnition FactoryGirl.define do factory :user do sequence(:email) {|n| "email#{n}@factory.com" } factory :admin { admin true } end generates unique email factory :post do title "My Post" association :user end end Client Code describe User do it "can love each other" do no need to care for the jack = FactoryGirl.create(:user) uniqueness rose = FactoryGirl.create(:user) jack.girl_friend = rose jack.loves?(rose).should be_true end end

23. Factory Deﬁnition FactoryGirl.define do factory :user do sequence(:email) {|n| "email#{n}@factory.com" } factory :admin { admin true } end factory :post do title "My Post" association association :user end end Client Code describe Post do can deﬁne the association easily it "belongs to user" do post = FactoryGirl.create(:post) post.user.should be end end

24. Capybara, Capybara- webkit • It helps us creating acceptance test code. • It simulates how a real user would interact with your app. describe "the signup process", type: :request do before :each do FactoryGirl.create(email: 'user@example.com', password: 'secret') end it "signs me in" do within("#session") do fill_in 'Login', with: 'user@example.com' fill_in 'Password', with: 'secret' end click_link 'Sign in' end end (c)2012 YourGolf Online Inc. All Rights Reserved.

25. VCR • It records your test suite's HTTP interactions and replay them during future test runs for fast, deterministic, accurate tests. describe "VCR example group metadata", :vcr do it 'records an http request' do make_http_request.should == 'Hello' end end (c)2012 YourGolf Online Inc. All Rights Reserved.

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Editor's Notes