1. SAP Insider Track Munich
SAP Centric application Interface Regression Testing for Cloud and on-Premise
SAP Insider Track Munich
7 October 2017
Frank van der Plas
Michal Kowalczewski

2. Agenda Welcome concepts of int4 application interface testing approach
Example of SAP centric regression testing
Questions

3. INT4 introduction Founded in Poznan Poland in 2010.
Integration style: One face for One interface
INT4 consultants are all SAP middleware (SAP PO/CPI), SAP development (ABAP, IDOC, ALE, SAP AIF, HANA) and SAP module certification experts.
Started with the first blueprint for int4 IFTT 2012.
Michal Krawczyk SAP Mentor since 2007

4. Cost of late detection of application interface issues in ALM cycle
Preliminary estimates of relative cost factors of correcting errors as a function of where errors are
introduced and found . (X) relative cost unit
Where errors are introduced
Where errors are found
Blueprint
Configure, code
unit test
Functional
integration test
UAT
Pre-production
Post go-live 1X 5X
10X
15X
30X
Configure/code/unit test
20X
Functional/
Source: The economic impact of inadequate infrastructure for software testing
National institute of standards and technology . May 202

5. Typical SAP centric landscape
Business suite
S/4hana
SAP PO
SAP Cloud Platform Integration
- SAP as integated ERP system has a centric position. Usually single installation for headquarter and subsidiaries
Multiple local and global systems are integrated with SAP. Much often the non-SAP systems are added or decomissioned than SAP
In order to control such distributed landscape the central middleware platform must be used and the interface logic must be reusable. In this purpose the canonical data model is introduced and the most of the mappings and components in reused between particular interfaces. The TCO is much lower than maintaining the single connections but we need to keep in mind that the risk that single change will have broader negative impact is higher. For that purpose we need to have regression testing process organized well.

6. The SAP application interfaces
SAP cloud Platform
SAP ABAP Backend
SAP cloud
solutions
Apps
Odata
Gateway
external
Message
Cloud Platform Integrator
SAP Message FM
SAP AIF
Enterprise Service/
Proxy Soamanager
External systems
Bus doc.
IDOC/ALE
Processing
external
Message
Middleware: SAP PO
BAPI
CIF
RFC-Bapi
AIF- File
Processing ext. systems
Middleware: SAP PO
Cloud Platform Integrator
external
Message
SAP Message
Interface
technology
SAP
customizing
Bus doc.

7. Challenge: SAP Application interface testing
SAP application interfaces are complex interfaces combining various technology solutions and have a high degree of re-use Lets look at the number as the reuse increases from left to the right;
100+ messages
10 messages
One sales order
mapping
processing
Processing ext.systems
Middleware: SAP PO
Cloud Platform Integrator
external
Message
SAP Message
Interface
technology
SAP
customizing
Bus doc.
Testing challenges
Lots of technology components involved
Re-use of is Key ! The closer to the SAP business document the more re-use is introduced
What is the source of data? Production, manual produced, copies from previous test
Manage and store your unique test case like you do with tests scripts

8. What is the testing scope of int4 ?
Rec/playback
Unit testing
Unit testing
Rec/playback UI UI
Processing ext. system and cloud
external
Message
Middleware: SAP PO
Cloud Platform Integrator
SAP
Message
Interface
technology
SAP
customizing
Bus doc.
INT4 SAP application interface testing
Supported middleware and interfaces
SAP PI/PO 1
PI GUID inbound 2
PI IDOC inbound 3
PI synchronous resp. 5
PI Outbound 10
PI Manual Inbound
Backend 4
ECATT recording 6
IDoc number 7
IDoc Outbound 8
AIF XML 9
Inbound Proxy 11
DB Assertions
NW gateway 12
OData service
SAP Cloud PI 13
SAP CPI Sync 14
SAP CPI Outbound
Key-points:
Lots of technology components involved
Complexity increases with more interface types and middleware for Cloud and on-prem/private cloud
Use good and validated reference test sets
Application interface unit testing is a collection of different technology components

9. Working with Int4 test cases
Initial interface
Configuration
( IFTT coordinator)
Test case definition
( developer, functional, tester, expert user,
ALM team)
Continuous Execution/schedule test cases
( developer, functional, tester, expert user,
ALM team)
Configure
interface
Build test case
Interface: single click select CPI/PO message
Run test cases
virtual inject message in PO/CPI
IFTT interface
definition
Store reference for test case in repository
Behaviour
rules
Reference
Use IFTT Interface definition
Validate
Substitution rules
Business document reference
New bus doc
Validation rules
Interface Message reference
Store validation result

10. Example company- Test requirement
sources
interfaces
backend
scenarios
SAP cloud platform
Current:
Webshop for worldwide use
Cloud platform applications
Legacy system scenarios with inbound order and outbound order conformation
EDI with Germany, Poland and France
Change: a change in any of the integration components can impact other interfaces. Example expert use changes BRF+ table in AIF for his cloud integrator interface
Test requirement
Test new CPI integration
Regression test EDI and legacy interfaces
Apps
Apps
Cloud platform
integrator
SAP ECC
Apps
Gateway
Web
shop
SOA
manager
SAP PO
Map
AIF
FTP
Proxy
Sales
order
Canonical message
Map
B2B
Add-on
Map
Order idoc
Ordconf idoc
Map
Sales
confirmation
Map
BAPI
flatfile
Map WS

11. Example company – INT4 test approach
sources
interfaces
backend
Automated test execution
SAP cloud platform
Virtualize
Post Synchronous SAP cloud platform messages to CPI
Post SAP PO edi files
Post SAP PO order files and wait for order response file
Execution of test cases:
generate unique message
Post/trigger event
Select created business document
Validate testcase business document with newly created
Store test result
Generate report
CPI
Apps
Apps
Cloud platform
integrator
SAP ECC
Apps
Gateway
INT4 IFTT
Web
shop
SOA
manager
ECC
AIF
FTP
SAP PO
Proxy
Sales
order
SAP PO
Canonical message
Map
B2B
Add-on
Map
Order idoc
Ordconf idoc
Map
Sales
confirmation
Map
BAPI
flatfile
Map WS

12. Application interface test example Cloud Platform Integrator and SAP PO

13. Upcoming events Date Event 9 Oct 2017
Webinar the challenge of SAP application interface testing
November 2017
Webinar SAP centric integration testing in a hybrid environment using SAP PO and SAP CPI. Pre-register
1 Dec 2017
SAP Inside Track – Paris Presentation of SAP Centric integration testing for Cloud Platform Integrator. Follow us for live updates
December 2017
Webinar SAP application Interface development using the test driven INT4 Approach. Pre-register

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