Best Practices SOA Suite 11g -...

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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

© 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]

http://guidoschmutz.wordpress.com/

http://entwickler-press.de/ep/ep_buecher/pspic/cover_original/94/39390842394488241c02194.jpg

© 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 1‘600 projects

Over 150 service level agreements

More than 5‘000 training

participants

Research and development budget:

CHF 6.0 Mio. / EUR 3.6 Mio.

© 2009

Agenda

Data are always

part of the game.

Introduction

Scenario with SOA Suite 11g as an

example

Unit Testing of SOA Suite 11g

components

Integration Testing of SOA Suite 11g

composites

Summary

Best Practices for Testing SOA Suite 11g based systems

© 2009

Testing of SOA solutions

For testing N-tier solutions some common best practices have been established Unit and Integration Tests

Test Driven Development / Test-First Approach

Mock Objects

A lot of these approaches can be used/adapted for testing SOA solutions 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, it’s not enough to just test the existing functionality A SOA adds some additional logic which needs to be tested as well!

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


© 2009

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 testing

environment 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 larger than in traditional applications


© 2009

Automatic Testing

Relies on automatic, programmatic execution of the different test

scenarios

results can be verified against expected results

Efficient development and execution of test cases only achievable

through 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


© 2009

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/Asserter makes an accurate, binary decision whether a test was

successful or not

Mock/Stub Testing component which simulates part of the system to be tested


© 2009

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


© 2009

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

© 2009

Agenda

Data are always

part of the game.

Introduction


example


components


composites

Summary


© 2009

SOA Suite 11gR1 PS2 Architecture

12

Unified Runtime

BPMN

Policy ManagerOptimized

binding

Human Workflow

(+AMX, AG, Orgn)

Business Rules

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

© 2009

Sample scenario

Request

Generate ID

Read customer info

Validate credit card

Internal

External


© 2009

Implementation with SOA Suite 11g

SCA composite with the Business Process and a Mediator for customer

integration

Credit card validation implemented as a service on the Oracle Service

Bus service

Routes to the right credit card institute to be called


© 2009

Artifacts to be tested

BPEL/BPMN flow logic

Decisions, Orchestrations

Mediator logic

OSB flow logic

XQuery / XSL Transformations

Business Rules


© 2009

Is this good enough?


OSB Console

Enterprise Manager (EM)

© 2009

Agenda

Data are always

part of the game.

Introduction


example


components


composites

Summary


© 2009

Unit testing of a SOA Suite 11g SCA component

Oracle SOA Suite 11g provides a testing framework with the

following 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


© 2009

Unit testing of an 11g SCA component

CustomerMediator called, but database access

(via DB-Adapter) only simulated

Answer of CreditCardService simulated

Allocation of the request ID simulated

Fixed and deterministic values

are always returned

Important to be able to test

the answer with an

Asserter (Verifier) against

an expected message


© 2009

Initial message, will be

sent to the BPEL

component (Generator)

Emulated answer from

customer service, without

calling the real service

(Mock)

Answer will be

tested against

the expected

message

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

© 2009

Executing test cases

Test cases will be

deployed with the

normal deployment

of an SCA composite

Unit tests can be

executed via

Enterprise Manager

(EM) console


© 2009

Different Unit Testing Patterns

With Mediator logic

Without Mediator logic


With Customer Service

Mediator only

© 2009

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

© 2009

But how do I get these Mock Services?

The Unit Testing Framework of SOA Suite 11g is not available for

Oracle 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 of

the tasks with a SOA solution

Functional testing

Load testing


© 2009

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/


© 2009

Unit Testing Transformations


Automated Unit testing of Transformations is not supported!

developers tests are possible

automated with XMLUnit ?

© 2009

Integration Testing of SOA solutions

All the single components are deployed and wired together in a

dedicated 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?


© 2009

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 the

external services

BPEL

G V

Mediator /

ESB

M


© 2009

Integration Testing with soapUI

Tests can be combined into a Test Suite and run all together

Tests can assert, that the right outcome of a service call


© 2009

Summary

Best Practices for testing conventional applications are valid for

SOA 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


Basel · Baden · Bern · Lausanne · Zürich · Düsseldorf · Frankfurt/M. · Freiburg i. Br. · Hamburg · München · Stuttgart · Wien

Thank you!

ODTUG 2010

Guido Schmutz,

Technology Manager /

Partner Trivadis AG

29.6.2010, Washington

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