1 + 1 = 1Test + Development = The Omegapoint Way

Bobby Sanghera & Daniel DeogunTwitter: @DanielDeogun

LinkedIn: linkedin.com/in/bobbysinghsanghera

About Us…

Daniel Deogun Bobby Sanghera

Omegapoint Stockholm - Gothenburg - Malmoe - Umea - New York

Equity Fund Account Case

• A bank offers its customers the service of investing in stock through equity accounts

• Each account may target specific types of stock, e.g. only fair trade companies in Africa

• An account may only include stock satisfying the account limitations

• A customer may have multiple accounts

• Each account may have different risks

• Assignment: Write an application service allowing customers to trade stocks

[1] http://upload.wikimedia.org/wikipedia/commons/4/4c/Emblem-money.pngBy Spider death (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

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Equity Fund Account Case

• Test data • Account 1 may only include stock A, B, C, D, E • Account 2 may only include stock D, F, G • Account 3 may only include stock A, C, D, E

[1] http://upload.wikimedia.org/wikipedia/commons/4/4c/Emblem-money.pngBy Spider death (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

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Build Pipeline

Compile Unit tests Component tests

Manual System

testsCompile Unit tests Component

tests

Manual System

tests

Build Failed!

Test Interpretation

• Pre-condition Select customer X with equity account 1 & 3 Select account 3

• Testcase Step 1: Select stock A Step 2: Choose TRADE 50% Step 3: Confirm

• Expected Result 50% of the value of stock A in account 3 is traded Account 1 is untouched.

Developer Interpretation

• Accounts Each account is a portfolio of risk Each stock should be distributed among the accounts according to the risk chosen by the customer

• Assumptions Customer X has 100 stock of type A 30% of stock A is placed in account 1 70% of stock A is placed in account 3

• Test Execute Trade 50% of stock A => 50 stock A should be traded Expected Result 30% of stock A resides in account 1 => 15 stock A Expected Result 70% of stock A resides in account 3 => 35 stock A

Analysis

https://flic.kr/p/5aghr9

Equity Fund Account Case

• A bank offers its customers the service of investing in stock through equity accounts

• Each account may target specific types of stock, e.g. only fair trade companies in Africa

• An account may only include stock satisfying the account limitations

• A customer may have multiple accounts

• Each account may have different risks

• Assignment: Write an application service allowing customers to trade stocks

[1] http://upload.wikimedia.org/wikipedia/commons/4/4c/Emblem-money.pngBy Spider death (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

[1]

Analysis

No common understanding

Focus on independence

Ambiguous requirements

Parallel work to ensure time efficiency

Stop Fumbling in the Dark…

https://flic.kr/p/9J6ZYG

The old problem we always try to solve

Cost for solving bugs

Time elapsed

HOW?

Our savior?

http://martinfowler.com/books/continuousDelivery.html

bugs are still expensive

Cost for solving bugs

Time elapsed

apple inc. stock chart

www.nasdaq.com

observation -collaboration

DDD modeling

Pair programming

Pen test collaboration

The Omegapoint Way

https://flic.kr/p/68hEqK

Biggest Bang for the Buck

[2]

[2] https://www.flickr.com/photos/teddylambec/3581134792/

Time

Cost

Quality

Different Roles

• Developers still need to develop code

• Testers still need to develop tests

• However, we both want to develop software that is quality assured!

Strategic Development

Continuously analyze risks

Tactical testing

See the whole map

Logic review

Bugs

[3] https://www.flickr.com/photos/joealterio/3154810970/

our new savior!

Cost for solving bugs

Time elapsed

+

Why isn’t the Omegapoint way the standard way?

Culture

Not objective

Overall cost

overall effects?

Team constellations

Productivity

Quality

Overall cost

Q & A

https://flic.kr/p/9ksxQa