This document discusses test-driven development (TDD) workflows and principles. It emphasizes that TDD requires understanding the system architecture first before writing tests. Behavior-driven development (BDD) bridges technical and business needs by focusing on user stories. Clean architecture and domain-driven design help break down a project into user stories, scenarios, and architecture decisions before writing tests. Tests provide feedback on design quality and help ensure correct and maintainable code.

1. TDD-based Workflow
Optimizing Development Process
Akbar Hidayat

2. Test Driven Development
1. Define Expected Behaviours
2. Code them

3. assertEquals(
10,
add(4, 6)
);

4. function add(left, right)
return left + right;
);

5. BUG
DESTROYER?
BUG
DESTROYER?

6. TEST NEEDS
DESIGN

7. Feedback

8. BUSINESS IMPACTS

9. CORRECT IMPLEMENTATION

10. MAINTAINABLE CODE

11. Tests provide feedback
for the quality of the
design

12. TDD
TDD can't even be begun until we know the
shape of the system that is to be created.
(Uncle Bob)

13. BDD
The point of BDD is to get people
communicating and bridge the gap between
‘technical’ and ‘business’ people
(Dan North)

14. Clean Architecture
&
DDD

15. Breaking it down
1. User Stories
2. Scenario Explorations
3. Architecture Decisions
4. Writing down the test

16. User Story
As a [role] I want to
[user need] so that
[change]

17. User Story
1. Who
2. Behavioral Change
3. Business Value
4. Ubiquitous Language

18. User Story
As an event owner I want to
refund the remaining points
from an event so that I can
use the points again

19. leanpub.com/50quickideas

21. Architectural Decisions
TDD can't even be begun until
we know the shape of the
system that is to be created.
(Uncle Bob)

23. Think how the code
flow

25. /**
* @expectedException InvariantException
* @expectedExceptionMessage EVENT.REFUND.STILL_ACTIVE
*/
function
given_that_an_event_has_not_finished_and_when_the_event_is
_being_refunded_then_it_should_fail()
{
$eventRefund->refund($event, $requester);
}

26. /**
* @test
*/
function
given_that_the_event_is_sponsored_and_when_it_has_been_ref
unded_then_the_remaining_point_should_be_returned_to_the_a
dmin()
{
...
}

27. /**
* @test
*/
function
refunding_a_sponsored_event_should_increase_admin_point()
{
// Simulating HTTP POST to a certain route
$this->post(‘/refundedevents’, [
‘id’ => 212
]);
// Check in Database that the admin point has increased
...
}

28. Documentation of
what the SUT does

29. Documentation of
how it does it

30. DECODE
IDEAS
DISCOVER
POTENTIAL