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IMPACT
ANALYSIS
CHRISLEMA | CROWDFAVORITE
This  is  a  story  that  bears  strong  resemblance  to  a  real  
project.  I  can’t  tell  you  the  details  but  I  c...
PERFECT
CLIENT
BUILD  THE  
SOLUTION
DESIGN  THE  
SOLUTION
RECIEVE  THE  
REQUIREMENTS
GO  THROUGH  THE  
SECOND  ROUND  ...
LARGE
CLIENT
BUILD  THE  
SOLUTION
DESIGN  THE  
SOLUTION
RECIEVE  THE  
REQUIREMENTS
YES.  WE  KNOW  
WHO  YOU  ARE.
OK. ...
THE DANGER ZONE
The  porPon  of  a  project  where  all  your  profit  disappears  
and  you’re  wondering  how  you  got  ...
CLIENTS
ARE IDEA
FACTORIES
You  can’t  blame  a  client  for  having  a  lot  of  
new  ideas  when  they  can  finally  in...
DEVELOPERS
GET EASILY
ANCHORED
We  o]en  get  locked  in  on  the  original  statement  
of  work  -­‐  and  the  tasks  w...
THE
TRUTH:
THE PROBLEM
ISN’T CLIENTS
& IT’S NOT
DEVELOPERS
THE PROJECT BY THE NUMBERS
# OF COMMITS
# OF
CONTRIBUTORS
# OF MONTHS
4461 12 8
THE PROBLEM IS OUR
BRAIN & MEMORY
0% The number of staff we have that have perfect
memory and can do impact analysis in their sleep.
IMPACT ANALYSIS
The  work  that  must  be  done  when  a  client  
requests  new  work  (new  scope)  and  it  must  be  
...
HOW DO YOU MAKE CHOICES WHEN
YOU WRITE CODE?
Idea
Insight
CODE
CODE
 CODE
Talk
Talk
Talk
Choice
 Choice
Choice
If  you  no...
 	
  
NOTACHANGEORDERISSUE
NOT  A  MONEY  ISSUE.  IT’S  ABOUT  RISK  MITIGATION.
THE DANGER ZONE
The  place  where  you  break  your  own  code  and  can’t  
charge  anyone  else  because  it’s  your  mi...
Everything, which is done orderly,
with measure and according to
rules, generates something good.
Plato
This  is  another  story.  It’s  what  turned  me  
onto  automated	
  impact	
  analysis	
  thru  
acceptance  tesPng.	
 ...
The  trading  engine  for  
market  makers  was  a  
message-­‐oriented	
  soluEon	
  
that  was  having  
performance  is...
HIRE
OLD
PEOPLE
T I N Y L I T T L E P L U G
B E C A U S E T H E Y C A N W R I T E B O O K S F I L L E D W I T H L E S S O ...
IMPACT ANALYSIS
IS EASIER & FASTER
USING
CODECEPTION
FOR ACCEPTANCE TESTING
ACCEPTANCE TESTS
REPLICATE A USER’S
EXPERIENCE & ARE DRIVEN
BY “EXPECTATION” LOGIC.
THEY REMEMBER ALL THE PREVIOUS
DECISIO...
Title
As a [role]
I want [feature]
So that [benefit]
Acceptance Criteria
Scenario: Title
Given [context]
When [event]
Then...
<?php
$I = new AcceptanceTester($scenario);
$I->am(‘A Subscriber’);
$I->wantTo(‘edit my profile’);
$I->amOnPage(‘/members/...
I want to edit my profile
I am on page ‘members/edit-profile’
I see ‘Personal Information’
...
This  is  the  expectaPon  ...
wantTo
amOnPage
lookForwardTo
click
fillField
selectOption
submitForm
see
seeLink
seeElement
dontSeeElement
seeInCurrentUr...
1.  wget http://codeception.com/codecept.phar
2. php codecept.phar bootstrap
3. php codecept.phar generate:cept acceptance...
395ACCEPTANCE TESTS
AUTOMATED ACCEPTANCE TESTING
GITHUB	
  SCRUTINIZER	
  CODECEPTION	
  CAPISTRANO	
  
PUSH
 REPO
TESTS
Registered  w/  ScruP...
80mph
SPEED
The  goal  isn’t  to  write  these  tests  
quickly.  Or  even  to  learn  quickly  which  
acceptance  tests ...
ConEnuous	
  effort	
  	
  
–  not  strength  or  intelligence  –    
is  the  key  to  unlocking  our  
potenPal.  
Sir	
 ...
Maybe  you  saw  this  in  the  papers,  online,    
or  read  about  it  recently.  It  sPll  bears  telling.	
  
ONE LAS...
KNIGHT CAPITAL - August 2012
$440
million
$10MM
every minute
45
MINUTES
8
SERVERS
LET ME MAKE A GUESS. YOU DON’T WANT YOUR...
RESOURCES
TO GET YOU STARTED
hdp://codecepPon.com/quickstart
hdp://codecepPon.com/docs/01-­‐IntroducPon
hdp://codecepPon.c...
CHRIS LEMA
CTO & CHIEF STRATEGIST, CROWD FAVORITE
@chrislema | http://chrislema.com
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HOW DO YOU MAKE CHOICES Impact Analysis - LoopConf

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Publié le

HOW DO YOU MAKE CHOICES WHEN
YOU WRITE CODE?
Idea
Insight
CODE
CODE
CODE
Talk
Talk
Talk
Choice
Choice
Choice
If  you  noPce  the  
performance  isn’t  
great,  maybe  you  
try  a  new  approach.
Seeing  someone  
else’s  code  helps  you  
think  about  your  own  
in  a  new  way.
New  informaPon  
suggests  you  
thought  about  it  all  
wrong.  Which  leads  
to  changes  in  your  
code.
LET ME MAKE A GUESS. YOU DON’T WRITE THIS ALL DOWN. I NEVER DID.
 

Publié dans : Logiciels, Business, Ingénierie
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