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Unit Testingpatrick.kua@oracle.com

Australian Development Centre

Brisbane, Australia

mailto:patrick.kua@oracle.commailto:patrick.kua@oracle.com

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Aims

Unit Testing vs Traditional Testing

Benefts o Unit Testing

Introduction to Unit !using "Unit#rame$orks

Advanced Unit Testing %trategies

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Traditional Testing

Test t&e s'stem as a$&ole

Individual

components rarel'tested

(rrors go undetected

Isolation o errors

di)cult to trackdo$n

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Traditional Testing Strategies

*rint %tatements

Use o Debugger

Debugger (pressionsTest %cripts

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Unit Testing

(ac& part testedindividuall'

All components

tested at least once (rrors picked up

earlier

%cope is smaller,

easier to f errors

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Unit Testing Ideals

Isolatable

+epeatable

Automatable (as' to rite

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Unit Tests

%imple %tandalone Classes

ig& /evel Classes

Database based Classes Integrated -rame$ork Classes

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JUnit (www.junit.org)

"ava0based unittesting rame$ork

(legantl' simple

(as' to $rite unittests

(as' to manage unittests

1pen source 2 -ree3

4ature -rame$ork

De acto 5avastandard

Ant integration 6eneric testing

rame$ork

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JUnit Is Not Pere!t

6UI testing7 4arat&on 4an, in+unner

("B Components7 ttpUnit, Cactus

/imited +eporting mec&anism7 Artima

Time to set upTesting o non05ava ob5ects di)cult

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"ey #on!e$ts in JUnit

Test interace

Assert

TestCase7 assertTrue7 assert(8uals7 ail

Test%uiteTestDecorator9Test%etup

-ailures vs (rrors

run(TestResult)

TestCasesetUp()

tearDown()

TestSuiterun(TestResult)

Assert

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JUnit is %asy

public void testInvalidPersonName()

{

person.setFirstName(null);

person.setLastName(Smith);

tr! {

personService.createPerson(person);

"ail(#n invalid person name should be thro$n);

% catch (InvalidPersonName ipn) {

&& 'ception epected

%

%

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Writing a Unit Test

:. Create a class to &old t&e unit tests

;. Initialise ob5ects !setUp!# met&od#

. Call operations on t&e ob5ects t&at are

being unit tested

?. %tate assertions9ailures epected

. Clean up !tearDo$n!# met&od#

. (ecute t&e unit test

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JUnit &est Pra!ti!es

%etting up unit tests

+unning unit tests

riting unit tests

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Setting u$ Unit Tests

ctb src oracle apps ctb test oracle

apps ctb

public class Somelass

{ ..

public void some*ethod() { .. %

..%

public class Somelass+est{ public void testSome*ethod() { .. %%

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'unning Unit Tests

Defne standard Ant targets +un unit tests automaticall' and

continuousl'

Implement code coverage tools

Line notexecuted

Executed line

u!ber o" ti!esexecuted

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uality o Unit Tests

umber o Unit Tests

Code Coverage

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Writing Unit Tests

Avoid setup in constructor

Defne tests correctl'

4inimise side0eects ounit tests

/everage "units assertionsand ailures to t&eir ullest

Eeep tests small and ast

Automate all processes

rite eective eception&andling code

Add a test case or ever'bug eposed

+eactor, reactor, reactor

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Adan!ed Unit Testing

4ock 1b5ects

&at to Test and o$ 4uc& to Test7 Bugs

7 e$ -unctionalit'

1ptimiFe +unning Time

Code Coverage

(nvironment 4anagement7 Continuous Integration7 /ocal and remote development

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#on!lusion

Unit testing adds enormous value tosot$are development

"Unit makes testing 5ava programs eas'

Advanced Unit Testing Concepts

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uestions?