I Don’t Want To Be A Tester Any More!

Merging requirements engineering and

testing to everybody’s benefit

EuroSTAR 2010

Session T5

Anne Mette Hass

DELTA Axiom

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About me

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Testers are always unhappy

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and so are requirements engineers

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- now I have

had enough!

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I want to be at Boris Beizer Mental Level 4

Phase 4: A mental discipline that results in low-risk

software without much testing effort. In this phase

testers view themselves as disciplined

professionals whose task is to support the

development of highly testable, low risk software.

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I want to be an

expectation

engineer

But I don’t want to be a tester,

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Let’s merge requirements engineering and testing

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Merge of requirements engineering and testing

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The expectations are good enough,

when they are documented like test conditions.

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We don’t need to do test analysis any more,

it is already done during expectation expression!

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Expectations can be at different levels

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Expectation Engineering fits any development model

Iterative development

Sequential development

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Techniques are indispensable

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Don’t forget the support of

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Elicitation Result Example

We never give rebates to first timers!

For the standard subscribers we only give rebate

from the 5th subscription – that rebate is 5%.

The loyals gets 10% on the standard price.

REMEMBER: Always add a delivery fee!

Obviously not on the web-version, but otherwise

5 E. if the subscriber lives within 10 kilometers,

and 7.5 E. if he lives within 20 kilometers. Other

people living in this country must pay 10 E. for

delivery. If somebody lives abroad we’ll have to

figure out what the delivery fee should be on a

case to case basis – ask Hugo.

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Corresponding

expectations

1st

aspect domains 2nd

aspect domains MAMP is expected to L

Type

First subtract no rebate 1

Regular no. of subsc. *1

= 3 subtract no rebate 2

> 3 < 4 subtract no rebate 3

= 4 subtract no rebate 4

= 5 subtract 5% 5

>5 < 10 subtract 5% 6

= 10 subtract 5% 7

Loyal subtract 10% 8

Postal code *2

[210, 215,

220, 225]

add 5 Euro 9

230 to 300 add 7.5 Euro 10

all other

country

here add 10 Euro 11

abroad ensure that the

secretary enters a

delivery fee, before the

subscription becomes

accepted,

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inform the subscriber

of the situation

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Notes:

*1 We know from elsewhere

that a standard subscriber

has between 3 and 10

subscriptions, incl.

*2 These are the postal codes

representing 10, respectively

20 kilometers from Minitown.

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and examination schedule (extract)

Procedure

Step + Tracing

Actions and input Examination of result Actual result

1 Start creating a new

subscription.

[SE 54]

L1

Check that no rebate is

subtracted from the price.

2

[SE 54]

L9

Accept the subscription. Check that a delivery fee of 5

Euro is added to the price.

ID Purpose Estimated duration:

2.1.1 The purpose is to examine the rebate and delivery fee calculation for

subscribers who are first-timers and loyal, and living within 10 km

or more than 15 km away.

10 min.

Preconditions: A user (User A) who is a first-timer living within 10 km must exist in the database.

A user (User B) who is a loyal living more than 15 km away must exist in the database.

User A is logged on.

Examination Log

Date: Initials: Examination item: OK / Not OK

Comments:

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Everybody wins

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Forward from here

Would you like to try it out?!

Mail: amj@delta.dk

Web: deltaaxiom.com

Book: ?

©DELTA 2010