This set of slide decks was prepared by me and Amit for use in demonstrating Flyweight Pattern in our Design Pattern class at SU. You can download the code examples (C++ visual studio projects) from here: http://sdrv.ms/TsvEQl
Palestra ministrada na Trilha DevTest do The Developers Conference 2019 em Florianópolis sobre automação de testes de API com RestAssured e virtualização de serviços com Wiremock
This set of slide decks was prepared by me and Amit for use in demonstrating Flyweight Pattern in our Design Pattern class at SU. You can download the code examples (C++ visual studio projects) from here: http://sdrv.ms/TsvEQl
Palestra ministrada na Trilha DevTest do The Developers Conference 2019 em Florianópolis sobre automação de testes de API com RestAssured e virtualização de serviços com Wiremock
Good and Bad Code
The Broken Window Theory
The Grand Redesign in the Sky
The Sushi Chef Rule
The Hotel Room Rule
The Boy Scout Rule
OOP Patterns and Principles
SOLID Principles
How to measure clean code?
Tools
Unit testing without Robolectric, Droidcon Berlin 2016Danny Preussler
Are you bound to flaky, slow Robolectric Tests? Do you want to know a way out of it? This session shows ideas and concepts to replace Robolectric from your test code base
An introduction to the CQRS (Command Query Responsibility Segregation) style of application architecture. Also touching on CQS (command query separation), Event Sourcing, Pub-Sub, and a little DDD.
#ITsubbotnik Spring 2017: Roman Iovlev "Java edge in test automation"epamspb
Автоматизаторы старатются упростить рутинную работу ручных тестировщиков, но оказывается и работу автоматизатора можно улучшить. Сделать написание авто тестов проще, быстрее и с большим качеством.
Как этого добиться? Об этом я и хочу рассказать.
Мы поговорим про возможности Java 8, популярную библиотеку-плагин Lombok и мощный фреймворк для автоматизированного тестирования JDI.
Refactoring can either completely disrupt your project or make you go faster. This presentation will help you to avoid some pitfalls.
It also demonstrates refactorings that you could apply straight away to make your code better.
How can senior developers bridge the gap to becoming tech leads? How can mentors help them? We'll shine a light from above, a light from below, and we'll see if we can uncover some insights.
Applied category theory: the emerging science of compositionalitykenbot
What do programming, quantum physics, chemistry, neuroscience, systems biology, natural language parsing, causality, network theory, game theory, dynamical systems and database theory have in common?
As functional programmers, we know how useful category theory can be for our work - or perhaps how abstruse and distant it can seem. What is less well known is that applying category theory to the real world is an exciting field of study that has really taken off in just the last few years. It turns out that we share something big with other fields and industries - we want to make big things out of little things without everything going to hell! The key is compositionality, the central idea of category theory.
This talk will introduce the emerging field of applied category theory, with the aims of:
- Giving attendees a broad overview of cutting-edge applications of category theory
- Building an understanding of a small number of the most important core concepts
- Getting attendees excited, inspired to learn more, and equipped to apply some basic concepts to their work
Framework-driven dependency injection, as practiced by many OO programmers, tends to have considerable and underappreciated drawbacks. This talk goes into detail about why.
Functional programming has made great strides in the popular imagination, yet adoption of FP languages has often been challenging for companies, sputtering in fits and starts. Ken has been at the forefront of REA's successful adoption of FP over four years, and will share lessons learnt and traps avoided: how a human-first approach can succeed and scale.
Lenses, or more generally “optics”, are a technique that is indispensable to modern functional programming. However, implementations have veered between two extremes: incredible abstractive power with a steep learning curve; and limited domain-specific uses that can be picked up in minutes. Why can’t we have our cake and eat it too?
Goggles is a new Scala macro built over the powerful & popular Monocle optics library. It uses Scala’s macros and scandalously flexible syntax to create a compiler-checked mini-language to concisely construct, compose and apply optics, with a gentle, familiar interface, and informative compiler errors.
In this talk, I introduce the motivation for lenses, why lens usability is a problem that badly needs solving, and how the Goggles library, with Monocle, addresses this in an important way.
Some examples and motivation for creating data structures from nothing but functions - Church Encoding! There's particular detail on how it can make free monads more efficient.
Discusses the algebraic properties of types, different kinds of functions and the information that is preserved or lost, and Category Theory concepts that underpin and unify them.
Explains the basic concepts of Category Theory, useful terminology to help understand the literature, and why it's so relevant to software engineering.
Free Monads are a powerful technique that can separate the representation of programs from the messy details of how they get run.
I'll go into the details of how they work, how to use them for fun and profit in your own code, and demonstrate a live Free Monad-driven tank game.
Supporting code at https://github.com/kenbot/free
Software Engineering, Software Consulting, Tech Lead, Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Transaction, Spring MVC, OpenShift Cloud Platform, Kafka, REST, SOAP, LLD & HLD.
Atelier - Innover avec l’IA Générative et les graphes de connaissancesNeo4j
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
Amenez votre ordinateur portable et nous vous guiderons sur la mise en place de votre propre pile d’IA générative, en vous fournissant des exemples pratiques et codés pour démarrer en quelques minutes.
Do you want Software for your Business? Visit Deuglo
Deuglo has top Software Developers in India. They are experts in software development and help design and create custom Software solutions.
Deuglo follows seven steps methods for delivering their services to their customers. They called it the Software development life cycle process (SDLC).
Requirement — Collecting the Requirements is the first Phase in the SSLC process.
Feasibility Study — after completing the requirement process they move to the design phase.
Design — in this phase, they start designing the software.
Coding — when designing is completed, the developers start coding for the software.
Testing — in this phase when the coding of the software is done the testing team will start testing.
Installation — after completion of testing, the application opens to the live server and launches!
Maintenance — after completing the software development, customers start using the software.
OpenMetadata Community Meeting - 5th June 2024OpenMetadata
The OpenMetadata Community Meeting was held on June 5th, 2024. In this meeting, we discussed about the data quality capabilities that are integrated with the Incident Manager, providing a complete solution to handle your data observability needs. Watch the end-to-end demo of the data quality features.
* How to run your own data quality framework
* What is the performance impact of running data quality frameworks
* How to run the test cases in your own ETL pipelines
* How the Incident Manager is integrated
* Get notified with alerts when test cases fail
Watch the meeting recording here - https://www.youtube.com/watch?v=UbNOje0kf6E
Transform Your Communication with Cloud-Based IVR SolutionsTheSMSPoint
Discover the power of Cloud-Based IVR Solutions to streamline communication processes. Embrace scalability and cost-efficiency while enhancing customer experiences with features like automated call routing and voice recognition. Accessible from anywhere, these solutions integrate seamlessly with existing systems, providing real-time analytics for continuous improvement. Revolutionize your communication strategy today with Cloud-Based IVR Solutions. Learn more at: https://thesmspoint.com/channel/cloud-telephony
A Study of Variable-Role-based Feature Enrichment in Neural Models of CodeAftab Hussain
Understanding variable roles in code has been found to be helpful by students
in learning programming -- could variable roles help deep neural models in
performing coding tasks? We do an exploratory study.
- These are slides of the talk given at InteNSE'23: The 1st International Workshop on Interpretability and Robustness in Neural Software Engineering, co-located with the 45th International Conference on Software Engineering, ICSE 2023, Melbourne Australia
AI Genie Review: World’s First Open AI WordPress Website CreatorGoogle
AI Genie Review: World’s First Open AI WordPress Website Creator
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https://sumonreview.com/ai-genie-review
AI Genie Review: Key Features
✅Creates Limitless Real-Time Unique Content, auto-publishing Posts, Pages & Images directly from Chat GPT & Open AI on WordPress in any Niche
✅First & Only Google Bard Approved Software That Publishes 100% Original, SEO Friendly Content using Open AI
✅Publish Automated Posts and Pages using AI Genie directly on Your website
✅50 DFY Websites Included Without Adding Any Images, Content Or Doing Anything Yourself
✅Integrated Chat GPT Bot gives Instant Answers on Your Website to Visitors
✅Just Enter the title, and your Content for Pages and Posts will be ready on your website
✅Automatically insert visually appealing images into posts based on keywords and titles.
✅Choose the temperature of the content and control its randomness.
✅Control the length of the content to be generated.
✅Never Worry About Paying Huge Money Monthly To Top Content Creation Platforms
✅100% Easy-to-Use, Newbie-Friendly Technology
✅30-Days Money-Back Guarantee
See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
#AIGenieApp #AIGenieBonus #AIGenieBonuses #AIGenieDemo #AIGenieDownload #AIGenieLegit #AIGenieLiveDemo #AIGenieOTO #AIGeniePreview #AIGenieReview #AIGenieReviewandBonus #AIGenieScamorLegit #AIGenieSoftware #AIGenieUpgrades #AIGenieUpsells #HowDoesAlGenie #HowtoBuyAIGenie #HowtoMakeMoneywithAIGenie #MakeMoneyOnline #MakeMoneywithAIGenie
AI Pilot Review: The World’s First Virtual Assistant Marketing SuiteGoogle
AI Pilot Review: The World’s First Virtual Assistant Marketing Suite
👉👉 Click Here To Get More Info 👇👇
https://sumonreview.com/ai-pilot-review/
AI Pilot Review: Key Features
✅Deploy AI expert bots in Any Niche With Just A Click
✅With one keyword, generate complete funnels, websites, landing pages, and more.
✅More than 85 AI features are included in the AI pilot.
✅No setup or configuration; use your voice (like Siri) to do whatever you want.
✅You Can Use AI Pilot To Create your version of AI Pilot And Charge People For It…
✅ZERO Manual Work With AI Pilot. Never write, Design, Or Code Again.
✅ZERO Limits On Features Or Usages
✅Use Our AI-powered Traffic To Get Hundreds Of Customers
✅No Complicated Setup: Get Up And Running In 2 Minutes
✅99.99% Up-Time Guaranteed
✅30 Days Money-Back Guarantee
✅ZERO Upfront Cost
See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
Launch Your Streaming Platforms in MinutesRoshan Dwivedi
The claim of launching a streaming platform in minutes might be a bit of an exaggeration, but there are services that can significantly streamline the process. Here's a breakdown:
Pros of Speedy Streaming Platform Launch Services:
No coding required: These services often use drag-and-drop interfaces or pre-built templates, eliminating the need for programming knowledge.
Faster setup: Compared to building from scratch, these platforms can get you up and running much quicker.
All-in-one solutions: Many services offer features like content management systems (CMS), video players, and monetization tools, reducing the need for multiple integrations.
Things to Consider:
Limited customization: These platforms may offer less flexibility in design and functionality compared to custom-built solutions.
Scalability: As your audience grows, you might need to upgrade to a more robust platform or encounter limitations with the "quick launch" option.
Features: Carefully evaluate which features are included and if they meet your specific needs (e.g., live streaming, subscription options).
Examples of Services for Launching Streaming Platforms:
Muvi [muvi com]
Uscreen [usencreen tv]
Alternatives to Consider:
Existing Streaming platforms: Platforms like YouTube or Twitch might be suitable for basic streaming needs, though monetization options might be limited.
Custom Development: While more time-consuming, custom development offers the most control and flexibility for your platform.
Overall, launching a streaming platform in minutes might not be entirely realistic, but these services can significantly speed up the process compared to building from scratch. Carefully consider your needs and budget when choosing the best option for you.
Need for Speed: Removing speed bumps from your Symfony projects ⚡️Łukasz Chruściel
No one wants their application to drag like a car stuck in the slow lane! Yet it’s all too common to encounter bumpy, pothole-filled solutions that slow the speed of any application. Symfony apps are not an exception.
In this talk, I will take you for a spin around the performance racetrack. We’ll explore common pitfalls - those hidden potholes on your application that can cause unexpected slowdowns. Learn how to spot these performance bumps early, and more importantly, how to navigate around them to keep your application running at top speed.
We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
E-commerce Application Development Company.pdfHornet Dynamics
Your business can reach new heights with our assistance as we design solutions that are specifically appropriate for your goals and vision. Our eCommerce application solutions can digitally coordinate all retail operations processes to meet the demands of the marketplace while maintaining business continuity.
Enterprise Resource Planning System includes various modules that reduce any business's workload. Additionally, it organizes the workflows, which drives towards enhancing productivity. Here are a detailed explanation of the ERP modules. Going through the points will help you understand how the software is changing the work dynamics.
To know more details here: https://blogs.nyggs.com/nyggs/enterprise-resource-planning-erp-system-modules/
Top Features to Include in Your Winzo Clone App for Business Growth (4).pptxrickgrimesss22
Discover the essential features to incorporate in your Winzo clone app to boost business growth, enhance user engagement, and drive revenue. Learn how to create a compelling gaming experience that stands out in the competitive market.
Navigating the Metaverse: A Journey into Virtual Evolution"Donna Lenk
Join us for an exploration of the Metaverse's evolution, where innovation meets imagination. Discover new dimensions of virtual events, engage with thought-provoking discussions, and witness the transformative power of digital realms."
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppGoogle
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
👉👉 Click Here To Get More Info 👇👇
https://sumonreview.com/ai-fusion-buddy-review
AI Fusion Buddy Review: Key Features
✅Create Stunning AI App Suite Fully Powered By Google's Latest AI technology, Gemini
✅Use Gemini to Build high-converting Converting Sales Video Scripts, ad copies, Trending Articles, blogs, etc.100% unique!
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✅Auto-post or schedule stunning AI content across all your accounts at once—WordPress, Facebook, LinkedIn, Blogger, and more.
✅With one keyword or URL, generate complete websites, landing pages, and more…
✅Automatically create & sell AI content, graphics, websites, landing pages, & all that gets you paid non-stop 24*7.
✅Pre-built High-Converting 100+ website Templates and 2000+ graphic templates logos, banners, and thumbnail images in Trending Niches.
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See My Other Reviews Article:
(1) AI Genie Review: https://sumonreview.com/ai-genie-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
#AIFusionBuddyReview,
#AIFusionBuddyFeatures,
#AIFusionBuddyPricing,
#AIFusionBuddyProsandCons,
#AIFusionBuddyTutorial,
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#AIFusionBuddyDemo,
#AIFusionBuddyMaintenanceFees,
#AIFusionBuddyNewbieFriendly,
#WhatIsAIFusionBuddy?,
#HowDoesAIFusionBuddyWorks
Zoom is a comprehensive platform designed to connect individuals and teams efficiently. With its user-friendly interface and powerful features, Zoom has become a go-to solution for virtual communication and collaboration. It offers a range of tools, including virtual meetings, team chat, VoIP phone systems, online whiteboards, and AI companions, to streamline workflows and enhance productivity.
Mobile App Development Company In Noida | Drona InfotechDrona Infotech
Looking for a reliable mobile app development company in Noida? Look no further than Drona Infotech. We specialize in creating customized apps for your business needs.
Visit Us For : https://www.dronainfotech.com/mobile-application-development/
29. public interface Config {
// Database stuff
String getDatabaseHost();
int getDatabasePort();
int getMaxThreads();
int getConnectionTimeout();
// Potato settings
String getDefaultPotatoVariety();
int getMaxPotatoes();
double getPotatoShininess();
// Sacrificial settings
int getBloodSacrificeGoatCount();
int getBloodSacrificeChickenCount();
int getBloodSacrificeSheepCount();
}
30. public class PotatoService {
public PotatoService(Config config) {
this.potatoVariety = config.getPotatoVariety();
this.maxPotatoes = config.getMaxPotatoes();
}
public Salad makePotatoSalad() {...}
}
31. public class PotatoServiceTest {
Config config = mock(Config.class)
@Before
public void before() {
when(config.getDefaultPotatoVariety())
.thenReturn(“pontiac”);
when(config.getMaxPotatoes())
.thenReturn(33);
}
public testMakeSalad() {
PotatoService service = new PotatoService();
Assert.equalTo(service.makeSalad(), ...);
}
}
32. public class PotatoServiceTest {
Config config = mock(Config.class)
@Before
public void before() {
when(config.getDefaultPotatoVariety())
.thenReturn(“pontiac”);
when(config.getMaxPotatoes())
.thenReturn(33);
}
public testMakeSalad() {
PotatoService service = new PotatoService();
Assert.equalTo(service.makeSalad(), ...);
}
}
Stub
34. No-ones ever
going to
need all those
things at once.
public interface Config {
// Database stuff
String getDatabaseHost();
int getDatabasePort();
int getMaxThreads();
int getConnectionTimeout();
// Potato settings
String getDefaultPotatoVariety();
int getMaxPotatoes();
double getPotatoShininess();
// Sacrificial settings
int getBloodSacrificeGoatCount();
int getBloodSacrificeChickenCount();
int getBloodSacrificeSheepCount();
}
35. That’s better!
public interface DatabaseConfig {
String getDatabaseHost();
int getDatabasePort();
int getMaxThreads();
int getConnectionTimeout();
}
public interface PotatoConfig {
String getDefaultPotatoVariety();
int getMaxPotatoes();
double getPotatoShininess();
}
public interface SacrificialConfig {
int getBloodSacrificeGoatCount();
int getBloodSacrificeChickenCount();
int getBloodSacrificeSheepCount();
}
36. public class PotatoService {
public PotatoService(PotatoConfig config) {
this.potatoVariety = config.getPotatoVariety();
this.maxPotatoes = config.getMaxPotatoes();
}
public Salad makePotatoSalad() {...}
}
Don’t you just need the two
fields? Does it matter where
they come from?
37. public class PotatoService {
public PotatoService(String variety, int max) {
this.potatoVariety = variety;
this.maxPotatoes = max;
}
public Salad makePotatoSalad() {...}
}
The application wiring can
be someone else’s business.
38. public class PotatoServiceTest {
public testMakeSalad() {
PotatoService service =
new PotatoService(“pontiac”, 33);
Assert.equalTo(service.makeSalad(), ...);
}
}
39. - More modular
- More reusable
- Simpler
- Less code
- Stubs are gone
42. public interface Wallet {
int removeCoins(int amount);
int getAmount();
}
public interface VendingMachine {
void insertCoins(int amount);
Can collectCan();
int getStoredCash();
}
public interface Customer {
void buyDrink();
}
43. public class CustomerTest {
Wallet wallet = mock(Wallet.class);
VendingMachine machine = mock(VendingMachine.class);
@Before
public void before() {
when(wallet.removeCoins(3)).thenReturn(3);
when(vendingMachine.collectCan())
.thenReturn(new CokeCan());
}
public testBuyDrink() {
Customer c = new Customer();
c.buyDrink();
verify(wallet).removeCoins(3);
verify(vendingMachine).insertCoins(3);
verify(vendingMachine).collectCan();
}
}
44. public class CustomerTest {
Wallet wallet = mock(Wallet.class);
VendingMachine machine = mock(VendingMachine.class);
@Before
public void before() {
when(wallet.removeCoins(3)).thenReturn(3);
when(vendingMachine.collectCan())
.thenReturn(new CokeCan());
}
public testBuyDrink() {
Customer c = new Customer();
c.buyDrink();
verify(wallet).removeCoins(3);
verify(vendingMachine).insertCoins(3);
verify(vendingMachine).collectCan();
}
}
Stub
Mock
45. The class under test is
separated now!
But what are the mocks
telling us?
46. public interface Wallet {
int removeCoins(int amount);
int getAmount();
}
public interface VendingMachine {
void insertCoins(int amount);
Can collectCan();
int getStoredCash();
}
public interface Customer {
void buyDrink();
}
Surely we care about
the resulting state,
not the in-betweeny
verbs.
47. If the state is just
immutable
values, we don’t
have to force
isolation
public interface Wallet {
int removeCoins(int amount);
int getAmount();
}
public interface VendingMachine {
void insertCoins(int amount);
Can collectCan();
int getStoredCash();
}
public interface Customer {
void buyDrink();
}
48. public interface Wallet {
int getAmount();
Wallet removeCoins(int amount);
}
public interface VendingMachine {
Optional<Can> getCanInTray();
int getStoredCash();
List<Can> getCansInMachine();
VendingMachine insertCoins(int amount);
VendingMachine collectCan();
}
public interface Customer {
Wallet getWallet();
List<Can> getCansHeld();
Pair<VendingMachine, Customer>
buyDrink(VendingMachine vm);
}
49. public interface Wallet {
int getAmount();
Wallet removeCoins(int amount);
}
public interface VendingMachine {
Optional<Can> getCanInTray();
int getStoredCash();
List<Can> getCansInMachine();
VendingMachine insertCoins(int amount);
VendingMachine collectCan();
}
public interface Customer {
Wallet getWallet();
List<Can> getCansHeld();
Pair<VendingMachine, Customer>
buyDrink(VendingMachine vm);
}
Immutable
state
50. public interface Wallet {
int getAmount();
Wallet removeCoins(int amount);
}
public interface VendingMachine {
Optional<Can> getCanInTray();
int getStoredCash();
List<Can> getCansInMachine();
VendingMachine insertCoins(int amount);
VendingMachine collectCan();
}
public interface Customer {
Wallet getWallet();
List<Can> getCansHeld();
Pair<VendingMachine, Customer>
buyDrink(VendingMachine vm);
}
“Actions” just
return new
copies
51. public class CustomerTest {
public testBuyDrink() {
Customer c = new Customer(new Wallet(23));
VendingMachine vm = new VendingMachine(10,30);
Pair<VendingMachine, Customer> result = c.buyDrink(vm);
Customer c2 = result.second();
VendingMachine vm2 = result.first();
Assert.equals(20, c2.getWallet().getAmount());
Assert.equals(9, vm2.getCansInMachine().size());
Assert.equals(33, vm2.getStoredCash());
}
}
52. - Less moving parts
- More reusable
- Simpler
- Easier
- Mocks & Stubs are
gone
58. public interface EmailSender {
void sendEmail(String addr, Email email);
}
public class SpecialOffers {
private final EmailSender sender;
void sendSpecialOffers(Customer c) {
if (!c.isUnsubscribed()) {
String content = "Hi " + c.getName() + "!";
sender.sendEmail(c.getEmailAddr(),
new Email(content))
}
}
}
59. public class SpecialOffersTest {
EmailSender sender = mock(EmailSender.class)
public testSendEmail() {
SpecialOffers offers = new SpecialOffers(sender);
offers.sendSpecialOffers(
new Customer(false, “Bob”, “foo@foo.com”));
verify(sender).send(“foo@foo.com”,
new Email(“Hi, Bob!”));
}
}
60. public class SpecialOffersTest {
EmailSender sender = mock(EmailSender.class)
public testSendEmail() {
SpecialOffers offers = new SpecialOffers(sender);
offers.sendSpecialOffers(
new Customer(false, “Bob”, “foo@foo.com”));
verify(sender).send(“foo@foo.com”,
new Email(“Hi, Bob!”));
}
}
Mock
61. Ok, so it tests we send an
email.
But what is the mock trying
to tell us?
62. public interface EmailSender {
void sendEmail(String addr, Email email);
}
public class SpecialOffers {
private final EmailSender sender;
void sendSpecialOffers(Customer c) {
if (!c.isUnsubscribed()) {
String content = "Hi " + c.getName() + "!";
sender.sendEmail(c.getEmailAddr(),
new Email(content))
}
}
}
I only care about the intent to
send an email, not the actual
sending. Can the intent be its
own thing?
63. public interface SendEmailIntent {
String getAddress();
Email getEmail();
}
public interface Interpreter {
void interpret(SendEmailIntent intent);
}
public class SpecialOffers {
Optional<SendEmailIntent> sendSpecialOffers(
Customer c) {
if (!c.isUnsubscribed()) {
String content = "Hi " + c.getName() + "!";
return Optional.of(new SendEmailIntent(
c.getEmailAddr(),
new Email(content)));
} else {
return Optional.empty();
}
}
}
We can have
an
interpreter
elsewhere.
64. public class SpecialOffersTest {
public testSendEmail() {
SpecialOffers offers = new SpecialOffers();
SendEmailIntent intent = offers.sendSpecialOffers(
new Customer(false, “Bob”,
“foo@foo.com”)).get();
Assert.equals(intent.getAddress(), “foo@foo.com”);
Assert.equals(intent.getEmail().getText(),
“Hi, Bob!”);
}
}
76. Sometimes, this
means that I test a
pointless web of lies,
that doesn’t touch the
code’s reason for
existence.
Stub Mock
77. Other times, I am really
testing the intent of the
code, which can be pulled
out as its own structure.
This separates the
concern of choosing the
next thing.
Stub Mock
78. Stub Mock
If you are using
immutable types and
pure functions, then
you’re home and
hosed.
Forget about
• “collaborators”
• “Tell don’t ask”
• Avoiding static methods
• Avoiding “new”.