1.
Can We Deliver Mobile Apps
Continuously
DAN WATERS
XAMARIN TECHNICAL SOLUTIONS PROFESSIONAL AT MICROSOFT
DAN@XAMARIN.COM | @DANWATERS

2.
We Can Deliver Mobile Apps
Continuously
DAN WATERS
XAMARIN TECHNICAL SOLUTIONS PROFESSIONAL AT MICROSOFT
DAN@XAMARIN.COM | @DANWATERS

3.
Quality Matters More
On Mobile

4.
Short User Sessions
Small Form Factors
Limited Resources

5.
Thousands of iOS and Android APIs
Public web APIs
Backend integrations
Third party libraries
Memory, CPU and network constraints

6.
Count of distinct device types
(out of 682,000 unique devices running OpenSignal apps)
2013: 11,868
2014: 18,768
2015: 24,093

7.
Mobile app quality can be
OVERWHELMING

8.
How can we do better?
Vision, Tools, Processes, and Baby Steps

9.
7 Reasons To Adopt Continuous Delivery
 Much Higher Release Readiness
 Refactor with Confidence
 Consistent, Actionable, Automated Test Reports
 Better Feedback
 Move Faster, Safely
 Better Team Morale
 Higher Quality Software!

10.
Test Sooner.

11.
Faster Release Cycles

12.
Mobile DevOps Vision

13.
Vision for the developer experience – Mobile DevOps
Pick up a task
Write code
Manual tests
Code review
Push commit
CI with
automated
tests
Automated
deployment to
beta users
Review test
results

14.
Tools Demo
(kinda)

15.
The 20 Minute Goal

16.
Conceptual Build Templates
“Quick CI”
• Optimize for shorter
runtime (< 20 min)
• Run on every check-in (CI)
• Includes critical path smoke
tests
• Also includes smoke tests
for features related to the
commit (rotate new features
in and out)
• Small set of critical devices
CI Regression
• Chain and run only if Quick
CI is green
• Larger set of tests and
devices
• Deploy to beta users if it
passes
• Immediately triage if it fails
Weekly Regression
• Scheduled build starting
after everyone goes home
for the weekend
• Includes all tests and all
target devices
• Runtime could be very long

17.
The Highest-Value Automated UI Test For
Mobile Apps

18.
[Test]
[Category(“smoke-tests”)]
public void AppDoesNotCrash()
{
app.WaitForElement(“main_logo”);
app.Screenshot(“App did not crash.”)
}
C# Example (NUnit + Xamarin.UITest)

19.
Happy Test Cloud Customers
Pinterest uses Xamarin Test Cloud to delight Pinners
everywhere, guaranteeing its apps look amazing and
work without issue on any device for over 100 million
users.

20.
Happy Test Cloud Customers
Coca-Cola Bottling Co. Consolidated is transforming their
business with anywhere, anytime accessible field sales
apps powered by Xamarin for Visual Studio, Azure, and
Visual Studio Team Services.
Learn more at www.xamarin.com/customers

21.
3 Key Takeaways
To Help Delight Your Customers and Team

22.
1. Test Immediately

23.
2. Establish a Build

24.
3. Take Baby Steps

25.
Thank You!
Dan Waters
Xamarin Technical Solutions Professional at Microsoft
dan@xamarin.com | @danwaters