This document discusses unit testing with JUnit. It provides an introduction to JUnit, explaining that JUnit is a testing framework for writing and running repeatable tests of units of Java code. It describes the basics of JUnit, including how tests are organized using annotations in JUnit 4 like @Test and how assertions are used to validate expected outcomes. The document also demonstrates a simple example of writing a JUnit test for a calculator class.
JUnit is a unit testing framework for Java programming language. It was originally written by Kent Beck and Erich Gamma. Some key points:
- JUnit was one of the first unit testing frameworks for Java and has become the de facto standard.
- It allows writing and running repeatable tests to help find and prevent bugs. Tests are written in plain Java classes and methods.
- JUnit provides annotations like @Test, @Before, @After to identify test methods and set up/tear down methods.
- It includes assertions for validations and will report failures immediately. Tests can be organized into test suites.
JUnit is an open source unit testing framework for Java applications. It was written by Erich Gamma and Kent Beck and is part of the xUnit family of unit testing frameworks. JUnit allows developers to write test cases that test individual classes and methods. These test cases can be grouped into test suites and run automatically to ensure code meets requirements and to catch errors early in the development process. JUnit includes annotations like @Test to identify test methods and asserts to validate method output. It integrates with development tools like Eclipse to provide test results.
Unit testing with JUnit focuses on testing individual units of source code using JUnit. Key aspects covered include:
- Unit testing tests the smallest testable parts of code, while integration testing tests groups of code modules and system testing tests complete integrated systems.
- Tests in JUnit are implemented as public void testX() methods that call methods under test and assert expected outcomes.
- A test suite assembles individual test methods using reflection and executes the suite to automatically run all tests.
- Best practices include writing tests before code, testing all code that could break, and running tests frequently for rapid feedback.
Introduction to Elastic Search
Elastic Search Terminology
Index, Type, Document, Field
Comparison with Relational Database
Understanding of Elastic architecture
Clusters, Nodes, Shards & Replicas
Search
How it works?
Inverted Index
Installation & Configuration
Setup & Run Elastic Server
Elastic in Action
Indexing, Querying & Deleting
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After writing CSS for over 10 years you'd think you would know everything there is to know, right? I couldn't be more wrong and I found out the hard way. While my first formal code review session was painfully embarrassing it was also the most important lesson I have learned throughout my career. Code reviews force you to communicate on a different level which ultimately leads to more thoughtful coding practices. When writing Sass and other pre-processed languages it is even more important that you review your code continually, which even the more seasoned front end developers may neglect at times.
Bottom line: Code reviews will make you better.
In this update of his past presentations on Mobile Eating the World -- delivered most recently at The Guardian's Changing Media Summit -- a16z’s Benedict Evans takes us through how technology is universal through mobile. How mobile is not a subset of the internet anymore. And how mobile (and accompanying trends of cloud and AI) is also driving new productivity tools.
In fact, mobile -- which encompasses everything from drones to cars -- is everything.
Introduction to Elastic Search
Elastic Search Terminology
Index, Type, Document, Field
Comparison with Relational Database
Understanding of Elastic architecture
Clusters, Nodes, Shards & Replicas
Search
How it works?
Inverted Index
Installation & Configuration
Setup & Run Elastic Server
Elastic in Action
Indexing, Querying & Deleting
Introduction to Development for the InternetMike Crabb
?
Brief introduction into developing for the internet. A short history of how pages communicate with a server and a look a different web stacks that can be used in web development
Sass Code Reviews - How one code review changed my life #SassConf2015Stacy Kvernmo
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After writing CSS for over 10 years you'd think you would know everything there is to know, right? I couldn't be more wrong and I found out the hard way. While my first formal code review session was painfully embarrassing it was also the most important lesson I have learned throughout my career. Code reviews force you to communicate on a different level which ultimately leads to more thoughtful coding practices. When writing Sass and other pre-processed languages it is even more important that you review your code continually, which even the more seasoned front end developers may neglect at times.
Bottom line: Code reviews will make you better.
In this update of his past presentations on Mobile Eating the World -- delivered most recently at The Guardian's Changing Media Summit -- a16z’s Benedict Evans takes us through how technology is universal through mobile. How mobile is not a subset of the internet anymore. And how mobile (and accompanying trends of cloud and AI) is also driving new productivity tools.
In fact, mobile -- which encompasses everything from drones to cars -- is everything.