ATDD It’s Not Just About Writing Tests...Imperative Declarative Given I am on the home page When I...

ATDD It’s Not Just About Writing Tests

Debbie Evans Pete Thomas

Who are you?

The Start

Requirement definition

Feature testing

Continuous testing

Traceability

Regression testing

Documentation

SBE

ATDD

Where we were…

Let’s automate stuff!

Users

Technology

Business Analyst

This looks like it’s for tech, what about everyone else?

Why are we doing this?

Who are the stakeholders in the process?

What do you want me to build?

Technology

How do I know if it’s right?

Users

Can you tell me what the system

does? How do I know you built what we agreed?

How do I know you haven't broken anything?

Compliance & Audit

Did you build what was asked?

Did someone authorised to do so, say it was

correct?

How do I know you haven't broken anything? How did they

know it was correct?

Change

https://cucumber.pro/blog/2014/03/03/the-worlds-most-misunderstood-collaboration-tool.html

http://blog.mattwynne.net/2013/01/17/the-problem-with-solutions/

http://www.slideshare.net/lunivore/behavior-driven-development-11754474

S B E a s a p r o c e s s o v e r S B E a s a d e l i v e r a b l e

W r i t i n g a d o c u m e n t o v e r W r i t i n g a t e s t s c r i p t

Optimised for readability over Optimised for execution

O n e b u s i n e s s r u l e p e r t e s t o v e r F e w e r t e s t s

U n d e r s t a n d i n g f o r a l l o v e r E x p e r t s o n l y

T r u s t t h e c l a r i t y o v e r D i s b e l i e v i n g r e s u l t s

E a s y t o f i n d o v e r H i d d e n i n t h e b u i l d

Consistent quality Living documentation Traceability

Tools?

Test better together

SBE + Social Testing = Collaborative Learning

Things to look out for….

Imperative vs Declarative

Imperative Declarative

Given I am on the home page When I enter 'Peter' into the first name text box And enter 'Thomas' into the last name text box And click on the date of birth calendar drop down And click on 1972 in the year box And click on 'January' in the month box And click on '1' in the day box And click on 'create user' button Then a pop up showing 'User Created' is displayed

Imperative Declarative

Scenario Styles

Scenario: The user can cancel the crea=on of a break Item

Given the reconcilia=on detail entry is complete And the user cancels the Break Item crea=on Then there is no new break item in the system

Scenario Simple

So What?

Scenario: The system closes while excluding items

So What?

Scenario: The system closes while excluding items

Given the system is open for the current day

And a break item is selected for exclusion

When the system then closes for the current day

And the user confirms the exclusion

Then the error message ‘The system is closed for workflow’ is displayed

And the item is not Excluded

What would a good scenario descrip=on be?

Scenario: An item excluded aVer the system close will not be processed

Given the system is open for the current day

And a break item is selected for exclusion

When the system then closes for the current day

And the user confirms the exclusion

Then the error message ‘The system is closed for workflow’ is displayed

And the item is not Excluded

Reverse Engineering

Given an account with cut-‐off date of 15-‐Jan-‐2025, First Ac=vity Date 15-‐Jan-‐2025 and a posi=on of 10

When an Adjustment of 1000 is received with Effec=ve Date of <Effec=ve Date> and Actual Date of 16-‐Jan-‐2025

Then the resul=ng Posi=on is <Expected Posi=on>

Examples: | Effec=ve Date | Expected Posi=on | | 14-‐Jan-‐2025 | 1010 | | 15-‐Jan-‐2025 | 10 | | 16-‐Jan-‐2025 | 10 |

Can you determine what the scenario descrip=on should be?

Scenario Outline: An Adjustment is applied if its Effec=ve Date is before Cut-‐Off Date

Given an account with cut-‐off date of 15-‐Jan-‐2025, First Ac=vity Date 15-‐Jan-‐2025 and a posi=on of 10

When an Adjustment of 1000 is received with Effec=ve Date of <Effec=ve Date> and Actual Date of 16-‐Jan-‐2025

Then the resul=ng Posi=on is <Expected Posi=on>

Examples: | Effec=ve Date | Expected Posi=on | | 14-‐Jan-‐2025 | 1010 | | 15-‐Jan-‐2025 | 10 | | 16-‐Jan-‐2025 | 10 |

How can you simplify the example?

Scenario Outline: An Adjustment is applied if its Effec=ve Date is before Cut-‐Off Date

Given an account with cut-‐off date of 15-‐Jan-‐2025

When an Adjustment is received with Effec=ve Date of <Effec=ve Date>

Then the Adjustment is <Applied>

Examples: | Effec=ve Date | Applied | | 14-‐Jan-‐2025 | Y | | 15-‐Jan-‐2025 | N |

Exercises Bad Smells

•  Ambiguity in requirements •  Missing scenarios •  Users asking how things work •  Asking for proof of testing success •  Inaccessible test results/documentation •  Duplicated/similar scenarios •  Unintelligible scenarios

Top Tips

•  Aim for declarative scenarios •  Describe behaviour •  Target audience is a competent novice •  Should be able to reverse engineer rules from scenarios •  Write consistently in the business domain •  Avoid unnecessary detail •  One rule per scenario •  Optimise for readability

Keep the tables as simple as possible and avoid describing mul=ple rules in one spec.

Feature: Automated Trade Settlement

As a Settlements Operations User I want settlements from agent banks to be processed So that Trades reflect Settlement properly

Scenario: Autocash Settlement of a Free of Payment Trade on Value Date

Given a trade of <settlement type> And cash open quantity of <cash open quantity> And value date of <value date> When the business date is 18/07/2013 Then the cash open quantity is updated to <updated cash open quantity>

Examples:

Settlement Type Cash Open Quantity Value Date Updated Cash Open Quantity Free of Payment 10,000 18/07/2013 0 Free of Payment 11,000 19/07/2013 11,000 Delivery versus Payment 12,000 18/07/2013 12,000

Feature: Automated Trade Settlement

As a Settlements Operations User I want settlements from agent banks to be processed So that Trades reflect Settlement properly

Scenario: Autocash Settlement of a Free of Payment Trade on Value Date

Given a Free Of Payment Trade When the value date is today Then the cash fully settles

Given a Free Of Payment Trade When the value date is in the future Then the cash remains open

Given a Delivery versus Payment Trade When the value date is today Then the cash remains open

It’s not just about testing!

ATDD It’s Not Just About Writing Tests...Imperative Declarative Given I am on the home page When I...

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