Best Practices for Testing SOA Suite 11g Based Systems Guido Schmutz

7/28/2019 Best Practices for Testing SOA Suite 11g Based Systems Guido Schmutz

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Basel Baden Bern Lausanne Zrich Dsseldorf Frankfurt/M. Freiburg i. Br. Hamburg Mnchen Stuttgart Wien

Best Practices for Testing SOA Suite 11g

based systems

ODTUG 2010

Guido Schmutz,

Technology Manager /

Partner Trivadis AG

29.06.2010, Washington
http://www.odtugkaleidoscope.com/index.html


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2009Best Practices for Testing SOA Suite 11g based systems

Introduction

Guido Schmutz Working for Trivadis for more than 13 years

leading and independent IT service company operating in

Germany, Austria and Switzerland

Oracle ACE Director for Fusion Middleware and SOA

Co-Author of different books

Consultant, Trainer Software Architect for Java,

Oracle, SOA and EDA

More than 20 years of software development

experience

Contact: [email protected]

Blog: http://guidoschmutz.wordpress.com/
mailto:[email protected]://guidoschmutz.wordpress.com/http://entwickler-press.de/ep/ep_buecher/pspic/cover_original/94/39390842394488241c02194.jpghttp://guidoschmutz.wordpress.com/mailto:[email protected]


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2009

About Trivadis

3

Swiss IT consulting company

13 locations in Switzerland,

Germany and Austria

~ 540 employees

Key figures 2008

Services for more than 650 clients

in over 1600 projects

Over 150 service level agreements

More than 5000 trainingparticipants

Research and development budget:

CHF 6.0 Mio. / EUR 3.6 Mio.


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Agenda

Data are always

part of the game.

Introduction

Scenario with SOA Suite 11g as an

example

Unit Testing of SOA Suite 11gcomponents

Integration Testing of SOA Suite 11g

composites

Summary

Best Practices for Testing SOA Suite 11g based systems


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2009

Testing of SOA solutions

Fortesting N-tier solutions some common best practices have beenestablished Unit and Integration Tests

Test Driven Development / Test-First Approach

Mock Objects

A lot of these approaches can be used/adapted fortesting SOAsolutions as well

Testing a SOA solution is as/even more important Often enterprise wide systems (backbone of an enterprise)

Many different users

Each single error can have a huge impact

Even if SOA uses a lot of existing functionality, its not enough to justtest the existing functionality A SOA adds some additional logic which needs to be tested as well!

Router, Filter, Enrichment, Orchestration, Business Process Logic, Rules,



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Challenges for testing SOA solutions

SOA environments are inherently heterogeneous

SOA solutions typically integrate a set of packaged or

custom applications

not always possible to provide a dedicated testingenvironment for all the systems involved

SOA often works asynchronously Tests are usually carried out in a synchronous way,

Business processes often depend on timed events

unit of test usually largerthan in traditional applications



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Automatic Testing

Relies on automatic, programmatic execution of the different testscenarios

results can be verified against expected results

Efficient development and execution of test cases only achievablethrough Testing Frameworks

i.E. JUnit for Java

A Testing Framework provides some common, reusable

components for Creating a test

Executing a test

Verifying test results



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Functionalities of a Testing Framework

Generator

Produces the test data

Executes the components under test

Verifier/Asserter

Compares the actual test results with the expected results

a Verifier/Assertermakes an accurate, binary decision whether a test was

successful or not

Mock/Stub

Testing component which simulates part of the system to be tested



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Focuses on one specific component of the system

Outside dependencies should be isolated as much as possible to ensure

testing of the component in isolation

Easier to achieve with low-level component

Integration issues between components may not be discovered But later integration tests can rely on well-written and (unit)tested components

Unit / Component Testing



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Integration Testing

Focuses on the interaction between multiple components

Focuses on the lower layers first

Because they have the least external dependencies

If the test fails in a component of an upper layer, its less likely that the

reason is a faulty lower layer component These have already been tested

Also referred to as

Bottom-Up Testing


t


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2009

Agenda

Data are always

part of the game.

Introduction


example



composites

Summary



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SOA Suite 11gR1 PS2 Architecture

12

Unified Runtime

BPMN

Policy ManagerOptimized

binding

HumanWorkflow

(+AMX, AG,Orgn)

BusinessRules

Oracle Service Bus

Common JCA-based connectivity infrastructure

Repository

EM console+BPMN Screens

BAM

B2B

Mediator

Workspace Process Portal

(WC spaces)

MS Office

BPM Studio(with Business and IT views)

Shared BPMN

Model

Business View

BPA

BPMN 2.0,

BPEL

Rich End User InteractionWeb based customization

Process Composer

BPEL

Process

Analytics

Proc Cubes


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Sample scenario

Request

Generate ID

Read customer info

Validate credit card

Internal

External



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Implementation with SOA Suite 11g

SCA composite with the Business Process and a Mediator for customerintegration

Credit card validation implemented as a service on the Oracle Service

Bus service

Routes to the right credit card institute to be called



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Artifacts to be tested

BPEL/BPMN flow logic Decisions, Orchestrations

Mediator logic

OSB flow logic

XQuery / XSL Transformations

Business Rules



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Is this good enough?


OSB Console

Enterprise Manager (EM)


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Unit testing of a SOA Suite 11g SCA component

Oracle SOA Suite 11g provides a testing framework with thefollowing features

Definition of tests, assertions and emulations via JDeveloper

Starting Tests from the EM console or via the command line using

ANT

Test Reports via EM console or via JUnit report

A test case contains

Initiation

Defines the services and operations, which will be called with test data

Emulation Defined the message or error, which will be returned from a reference or a

component

Assertion

Compares the message or part of the message against expected data



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Unit testing of an 11g SCA component

CustomerMediator called, but database access(via DB-Adapter) only simulated

Answer ofCreditCardService simulated

Allocation of the request ID simulated

Fixed and deterministic valuesare always returned

Important to be able to test

the answer with an

Asserter (Verifier) against

an expected message



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Initial message, will be

sent to the BPELcomponent (Generator)

Emulated answer from

customer service, withoutcalling the real service

(Mock)

Answer will be

tested against

the expected

message

(Verifier)Best Practices for Testing SOA Suite 11g based systems


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Different Unit Testing Patterns

With Mediator logic

Without Mediator logic


With Customer Service

Mediator only


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Unit testing on an OSB service

In order to be able to test the OSB service isolated (as a unit)there must be a way to simulate the two service references

Mocks for Visa and Amexco

This way the Routing and Transformation logic can be tested


AmexcoVisa

Mock

Generate

Mock


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But how do I get these Mock Services?

The Unit Testing Framework of SOA Suite 11g is not available forOracle Service Bus services

Should we start implementing the Mock Services as own web

services with the language of our choice?

One advantage of SOA is the standardized definition of the

interfaces through WSDL and XSD

There are more and more utilities/tools available, simplifying some ofthe tasks with a SOA solution

Functional testing

Load testing



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soapUI

Tool for Web Service Testing

Available in a free version

Supports the Testing of SOAP as well as REST Web Services

Covers the following functionalities:

Inspection and call of web services

Functional testing of web services

Load testing of web services

Creation of Web Service Dummies (Mock Services)

http://www.soapui.org/



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Mock Service for the Visa Service


Mock


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Fault Response and dynamic values with soapUI



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Unit Testing Transformations


Automated Unit testing of Transformations is not supported! developers tests are possible

automated with XMLUnit ?


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Integration Testing of SOA solutions

All the single components are deployed and wired together in adedicated testing environment

Can be automated using Ant / WLST

connected with the corresponding test versions of the external

services

What should we do, if there is no test version available of a given

(external) service?

What should we do, if the service is not yet available?



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Integration Testing of SOA solutions

How can the behavior of an external service be influenced? So that different outcomes can be tested

to test the behavior of a SOA solution in an error case, the error situation has

to occur

How to force an (external) service to produce an error at the right moment?

The solution is again a Mock Service, which takes over the place of theexternal services

BPEL

G V

Mediator /

ESB

M



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Agenda

Data are always

part of the game.

Introduction


example



composites

Summary



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Summary

Best Practices for testing conventional applications are valid forSOA solutions as well

Unit Testing of SCA components is well supported via the SOA

Suite 11g testing framework

Not complete yet, but already quite usable Would be nice to be able to zoom into BPEL and BPMN with unit

testing (was there in 10g)

Integration Testing can be implemented with soapUI

calling SOA Suite services Creating a Mock Service for an external service

soapUI is much more powerful than shown here

All the Tests shown can be automated



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Basel Baden Bern Lausanne Zrich Dsseldorf Frankfurt/M Freiburg i Br Hamburg Mnchen Stuttgart Wien

Thank you!

ODTUG 2010

Guido Schmutz,

Technology Manager /

Partner Trivadis AG

29.6.2010, Washington

Best Practices for Testing SOA Suite 11g Based Systems Guido Schmutz

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