Test Automation in the Microservices Oriented Enterprise by Shawn Wallace

Test Automation in the “Microservices” Oriented

EnterpriseShawn Wallace

Architect, Centric Consulting

I’m Shawn

I’m ShawnFavorite Movie

I’m ShawnMy dog

Favorite Movie

I’m ShawnMy dog

My Son

Favorite Movie

I’m ShawnMy dog

My Son

My Daughter

Favorite Movie

I’m ShawnMy dog

My Son

My Daughter

My Family

Favorite Movie

I’m ShawnMy dog

My Son

My Daughter

My Family

I live here

Favorite Movie

I’m ShawnMy dog

My Son

My Daughter

My Family

I live here

Favorite Movie

I a Marine Vet

I’m ShawnMy dog

My Son

My Daughter

My Family

I live here

I went to Ohio State

Favorite Movie

I a Marine Vet

I’m ShawnMy dog

My Son

My Daughter

My Family

I live here

I went to Ohio State

Where I work

Favorite Movie

I a Marine Vet

What I got for Valentine’s Day

I’m a Developer…

Microservices

How did we get here?

Monolithic Applications


Orders


Invoicing Inventory

Logging

Profiles

Warehouse

Orders


Invoicing Inventory

Logging

Profiles

Warehouse

Orders


Invoicing Inventory

Logging

Profiles

Warehouse

Orders

Time To Build


Invoicing Inventory

Logging

Profiles

Warehouse

Orders

Time To Build

Size of Codebase


Invoicing Inventory

Logging

Profiles

Warehouse

Orders

Time To Build

Time To Test

Size of Codebase


Invoicing Inventory

Logging

Profiles

Warehouse

Orders

Time To Build

Time To Test

Size of Codebase

We are getting better at writing code than getting it into production.

Service Oriented Architecture (SOA)

Orders Invoicing Inventory

Logging Profiles Warehouse









Tightly Coupled


Loosely Coupled


Logging Profiles Reporting

Event Bus

Service Based Architecture• No point-to-point integrations • Loosely coupled, highly scalable systems • Loosely coupled, TEAMS • Easier to test • Easier to change • Topology agnostic

Easy to Integrate New Systems



Event Bus

Easy to Integrate New Systems



Event Bus

New System

Scales



Event Bus

InventoryInventory

Inventory

Scales



Event Bus

Other benefits• Ease of 3rd party integration • Existing systems can be ‘wrapped’ • Can be deliberate about scaling • Fault tolerant • Event messages can be logged and ‘replayed’ • Can test subsystems in isolation

DevOps is a Real Thing

EngineeringQuality

Assurance

IT Operations

EngineeringQuality

Assurance

IT Operations

Tension

IT Operations

Quality

AssuranceEngin

eerin

g

IT Operations

Quality

AssuranceEngin

eerin

g

DevOps

…that you might need to develop

…that you might need to develop• Technical in nature • Http Verbs (POST, GET, PUT, PATCH, DELETE, OPTIONS) • Http Headers • ReST • API • More about networking than

you would like • Oh, and you still need to know

the business

Once you have developed these skills, a whole new world of testing capability becomes available to you.

Easy to Test

Easy to Test

80-90%

5-15%

1-5%

• Deliberately test your system at the physical boundaries

• Know what your system does and how it works

• Collaborate! Collaborate! collaborate!







Terminology

Terminology• Messaging • Contracts • Messaging Infrastructure • Asynchronous • Loosely Coupled • “Edge” Testing • Mocks/Fakes • Dynamic Scaling • Data Consistency, Master Data Management

• Messaging • Contracts • Messaging Infrastructure • Asynchronous • Loosely Coupled • “Edge” Testing • Mocks/Fakes • Dynamic Scaling • Data Consistency, Master Data Management



Event Bus

Terminology




Event Bus

Terminology




Event Bus

Terminology




Event Bus

Terminology




Event Bus




Event Bus


Orders

Fake Consumer




Event Bus




Event Bus

Inventory

Inventory

Inventory


Testing Approaches

Use your web browser

• Can only execute un-authenticated GET requests • Can only access web clients • Hard to set headers

Use a web “sniffer”


• Fiddler - more granularity, more technicalhttp://www.telerik.com/fiddler

http://www.telerik.com/fiddler

https://www.getpostman.com


• Fiddler - more granularity, more technicalhttp://www.telerik.com/fiddler

• Postman - more friendly user interfacehttps://www.getpostman.com

http://www.telerik.com/fiddler

https://www.getpostman.com

Use a functional testing tool

Shawn [email protected]

@ShawnWallace

http://blog.shawnewallace.com

http://www.about.me/shawnwallace

This Presentation

mailto:[email protected]

http://www.about.me/shawnwallace

Test Automation in the Microservices Oriented Enterprise by Shawn Wallace

Technology