abap unit and tdd

ABAP Unit and TDD

Hendrik Neumann

SAP Inside Track Hamburg 2013

Copyright © 2013 evivax IT Consulting

GmbH Goebelstraße 21 | 64293 Darmstadt | Fon: 06151 - 506420 | e-mail: [email protected]

Agenda

Unit Testing & ABAP Unit

Test Driven Development (TDD)

Live Coding



Unit Testing

Unit Testing is a method by which

individual units of source code are tested

to determine if they are fit to use.



xUnit Framework

Provides an automated solution with no

need to write the same tests many times

and no need to remember what should be

the result of each test.



xUnit Framework



setup( ) test_method( ) teardown( )

assert_*( ) – methods

xUnit Framework



setup( ) test_method( ) teardown( )

test_method( )

test_method( )

test_method( )

test_method( )

test_method( )

test_method( )

ABAP Unit

SAP‘s xUnit implemenation



ABAP Unit

Local test classes for global dev. artifacts

In Reports, Function Modules and Classes

Not acitve on production systems



ABAP Unit

Tools integration:

ABAP Workbench

Code Inspector Integration

ABAP Unit Browser

ABAP Test Cockpit (ATC)

ABAP in Eclipse



Test Driven Development




Never

After you wrote your code

Before you write your code



When do you write your Unit Tests?



Test 1st




Test Cycle:

red green refactor



TDD Cycle



Write a test that expresses how you’ll

use the code and what you need it to do.

TDD Cycle



Write enough code to get the

test to pass, but no more.

TDD Cycle



Clean up the code to remove

redundancy and improve the design.

TDD Cycle



Code Kata: Roman Numerals

Copyright © 2013 evivax IT Consulting GmbH

Goebelstraße 21 | 64293 Darmstadt | Fon: 06151 - 506420 | e-mail: [email protected]

Rules:

• smaller number in front of a larger number subtraction

• all else addition

• put only one smaller number in front of a larger number

• ones, tens, hundreds and thousands are separate items

I The numeral one. II is two, III is three.

V The numeral 5. IV is 4, VI is 6, VII is 7, VIII is 8.

X The numeral 10. IX is 9, XI is 11, etc.

L The numeral 50. XL would be 40.

C The numeral 100. C is short for the Latin word Centum, but Century

is eaysier to remember ;-)

D The numeral 500.

M The numeral 1000.

So Long, and Thanks for All the Fish

Any Qs?



abap unit and tdd

Technology

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consultinggmbh goebelstrae

method test

method teardown test

abap unit local test

abap unit tools integration

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