eliasnogueira

public class ReadProperties {

    private static final Logger LOG = LoggerFactory.getLogger(ReadProperties.class);

    private static ReadProperties instance = null;
    private Properties properties = null;

    private ReadProperties() {
        properties = new Properties();
        try {

eliasnogueira

Talks

🟢 abstract ready | 🔵 no abstract | 🟡 need improvement

• 🟢 Managing Testing Data
• 🟢 Parallel frontend test execution using Selenium and Docker
• 🟢 How to fast generate your API Test with OpenAPI Tools and Rest-Assured
• 🟢 The Shift-Left Testing and the Saga to the Continuous Delivery
• 🟢 5 Tools Java Developers can use to deliver High-Quality software

eliasnogueira

Beyond Unit Tests: Practical Tools for High-Quality Java Code

Description

Embarking on a Java project involves employing the best strategies, patterns, and architectural decisions, all geared towards a customer-centric approach.

Yet, there exists an often overlooked facet: quality assurance. While not entirely disregarded, we, as developers, sometimes limit ourselves to performing the basic unit and integration tests, which may leave room for bugs.

Fortunately, several straightforward approaches and tools can be implemented to deliver a bug-free project with minimal effort.

eliasnogueira

Test Smarter, Not Harder: Achieving Confidence in Complex Distributed Systems

Description

The presentation starts by addressing common testing pitfalls in distributed systems, like using in-memory databases, brittle mocks, and flaky async tests. It introduces a real-world fintech architecture with microservices, multiple databases, external APIs, and asynchronous workflows. The core strategy covers five areas: using real dependencies, avoiding in-memory DBs, virtualizing external systems, testing async flows properly, and establishing strong API governance. Through code examples and practical tips, the session shows how to build fast, reliable, and realistic test pipelines that boost confidence in complex systems.

Takeaways

• Supporting multiple databases to speed up the CI process
• Mock dependencies globally using the Service Virtualization approach

eliasnogueira

<properties>
		<junit.version>4.12</junit.version>
		<junit.params.version>1.1.1</junit.params.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>${junit.version}</version>

eliasnogueira

	Project	Link
	simulations-client	https://github.com/eliasnogueira/simulations-client
	simulations-test	https://github.com/eliasnogueira/simulations-test
	restrictions-client	https://github.com/eliasnogueira/restrictions-test
	restrictions-test	https://github.com/eliasnogueira/restrictions-client
	test-parent	https://github.com/eliasnogueira/test-parent
	test-commons	https://github.com/eliasnogueira/test-commons
	api project	https://github.com/eliasnogueira/credit-api

eliasnogueira

Links

AssertJ examples

Custom Assertion

• Custom assertion methods based on a context (Simulation)
• Custom Soft Assertion using the methods from the Custom Assertion
• Test class using both Custom and Custom Soft Assertion

eliasnogueira

public class Loan {

    // private attributes
    private String name;
    private String email;
    private BigDecimal amount;
    private int installments;
    
    // constructor
    public LoanData(String name, String email, BigDecimal amount, int installments) {

eliasnogueira

Title

Datafaker: the most powerful fake data generator library

Description

Data generators in software testing play a critical role in creating realistic and diverse datasets for testing scenarios. However, they present challenges, such as ensuring data diversity, maintaining quality, facilitating validation, and ensuring long-term maintainability.

While many engineers are familiar with these challenges, they often resort to non-specialized tools like the RandomStringUtils class from Apache Commons or the Random class, concatenating fixed data with it. This approach lacks scalability and may not yield a valid dataset.

eliasnogueira

Title

Enhancing Project Integrity: A Test Modernization for Bug-Free Code

Description

Embarking on a Java project involves employing the best strategies, patterns, and architectural decisions, all geared towards a customer-centric.

Yet, there exists an often overlooked facet: quality assurance. While not entirely disregarded, we, as developers, sometimes limit ourselves to performing the basic unity and integration tests, which may leave room for bugs.

Fortunately, several straightforward approaches and tools can be implemented to deliver a bug-free project with minimal effort.