ttcn3 userconf'05 talk

7/26/2019 TTCN3 Userconf'05 Talk

1/16

Conformance Testing of MOST based ApplicationsTowards Effective System Testing

Andr Baresel, Michael Schmidt - DaimlerChrysler AG

Contact: [email protected]


2/16

Overview on the Talk

Telematics Application: The System Architecture

Specifying Functional Behaviour

Graphical Test Specification in Practice

Hardware in the oop: !ntegration of "evice Emulation

#sing Graphical ogging:

the importance of message tracing $ther Application Fields


3/16

Telematics Application

From Users Point of View

Audio (CD / Radio)

Telephone

Naviation

Video

!pee"h re"onition

!hort messain (!#!)

User interfa"e for $od% ele"troni"

Appli"ation !pe" Test Devel& Test 'e" oin *ther Appl


4/16

Telematics Application

Ar"hite"ture of Telemati"s Appli"ation

Networ+ of em$edded devi"es

,us s%stem- #*!T. CAN

Appli"ations implemented$% man% devi"es

oi"al separation of$ehaviour intoFun"tion,lo"+s

#ost#ost,us,us



5/16

Specifying FunctionalBehaviourAn 'ample of one Telemati"sAppli"ation

Audio Appli"ation

Devi"es intera"tin

Audio 0atewa% 1ead Unit #i"rophone CD Chaner

Switch from Tape to CD

23 messaes in this use "ase

intera"tions with other events li+e mo$ile phone

!how Tunin 4nfo

Press ,utton.

!tart Pla%in CD

Notif% CD Position

#anae Audio Channels

Fade Volume



6/16

Test Case Design &Execution

Specification%&ased tests 250+ complex MSCs

Each 'S( descri&esa single scenario

Specific Test "ata has

to &e selected

Parallelism descri&ed &y

te)tual documentation

!deas for using State (harts tetual

tetual



7/16

Graphical Test Specication

4n Pra"ti"e

Test Case Desin on !%stem evel

Components are ,la"+ ,oes Data 'n"odins $ased on 5#6!pe"

Timin of #essaes

Variation in #essae *rderins

*pen 4ssue-7Di8erent Ports for !%stem Components9 vs&

7#odelin of parallel Components9



8/16

Classi:"ation6Tree#ethod

Test Case Design & Execution

The Vision- Towards an Automated Test 'nvironment

#!C ; !tate $ased

!pe"i:"ations

,ehavioral model Test ee"ution

!%stemati" De:nition of Test Data

!"ripts



9/16

Test System

1ardware 'nvironment

!UT- 4nterpla% of #*!T devi"es

Test 1ardware allows !timulation

Capturin of "ommuni"ation $etween all devi"es



10/16

Test System

!oftware Ar"hite"ture

Optolyzer InterfaceOptolyzer Interface

OptolyzerOptolyzer

MOST Optolyzer ControlMOST Optolyzer Control

verify

Har!areInterface

Har!areInterface

to"cce##S$T

to"cce##S$T

TTC%&3

TTC%&3

Te#t'(nt)*e

Te#t'(nt)*e

Interface

Interface

TTC% Te#t Ca#e#TTC% Te#t Ca#e#

MOST/C"% Me##a+e ,ef)n)t)onMOST/C"% Me##a+e ,ef)n)t)on MOST/C"% Me##a+e -ncoerMOST/C"% Me##a+e -ncoer

MOST InterfaceMOST Interface

.CI arte.CI arte OptolyzerOptolyzer

MOST %etSer)ce#MOST %etSer)ce#

stimulate /

simulate

Or

virtual

devices

'e*ote Te#t '(nt)*e Interface'e*ote Te#t '(nt)*e Interface

TTCN6< 'e"ution 'nvironment

C"% InterfaceC"% Interface

verify &

simulate

C"% CarC"% Car

C"% ,r)erC"% ,r)er



11/16

ar!"are in the #oop

4nteration of Devi"e 'mulation

voi"e

Virtual

=e%

CA$%us

VirtualCD Chaner

MOST CAN

Test !"ripts runnin withvirtual ; eistin Devi"es

TR4 4mplementation dete"tswhether or not a Devi"e eists

#essae Veri:"ation or!timulation is used



12/16

sing Graphical #ogging

The 4mportan"e of #essae Tra"in

0oal- Visuali>ation of #essae Passin for Anal%sis andDo"umentation

Telemati"s Testers wor+ with os of di8erent !our"es.

Filterin the important information is essential

Do"umentation and'rror Reportin

!olution-

0raphi"al oerProtot%pe usinoer64nterfa"e

Allows Naviation andFilterin



13/16

Conclusion

TTCN6< has $een su""essfull% used to test Telemati"appli"ations

First steps toward an e?"ient test developmentenvironment

The usae of 0FN for spe"if%in tests has $eenapproved

The TR4 allows us to "reate all s"enarios of1ardware in a oop (14)

4t was eas% to add new 1ardware 4nterfa"es

A protot%pe of a raphi"al loer has shown theadvantaes of the solution



14/16

Future Extensions'

Usin TTNC6< to 'e"ute!tate ,ased Test #odels

@ait for 'vents on Continue!inals

Des"ri$e !inal 0eneration

*ther Aspe"ts

4nteration with Test #anaementTools

Roundtrip Testin-From oin to Test Cases



15/16

(ther Application Fiel!s forTTC$)*

4n the Automotive Contet

+eal Time Environments

motor "ontroller (petrol ; diesel enine)

ele"troni" ear shiftin. "ar $od% "ontrol(pneumati" sho"+ a$sorption)

environmental ele"troni"s(e&& window heatin. air "onditionin unit)

Characterisation of Applications man% "omponents intera"t

over di8erent networ+s (most. "an. $luetooth)

overlappin fun"tionalit%

Real time "onstrains to $e validated



16/16

(onformance Testing of '$ST &ased ApplicationsTowards Effective System Testing

Andr Baresel, Michael Schmidt - DaimlerChrysler AGContact: [email protected]

ttcn3 userconf'05 talk

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