Java
/
Junit
- 1 Basics 9
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Classes S
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Objects S
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Arrays S
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Variables S
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Loops S
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Numbers S
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Strings S
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Exceptions S
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Regexp S
- 2 OOP 9
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Inheritance
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Polymorphism
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Static S
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Abstract
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Interfaces
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Constructors S
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Packages
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Nested Classes
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Final
- 3 Compiler 2
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Sublime Text S
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Apache Ant
- 4 Collections 8
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Lists
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Comparable S
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Sets
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Maps
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Generics
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Properties
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Streams
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Json
- 5 Threads 4
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Create Thread S
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Sleep
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Lock
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Scheduler
- 6 Design Patterns 4
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Singleton
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Observer
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Strategy
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Mediator
- 7 Swing 12
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Frame
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Panel
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Listener
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Combo Box
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Label
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Image
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Menu
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Table
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Layout
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Drawing
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Timer
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Designer
- 8 I/O 7
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Streams IO
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Socket
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Watching Files
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Mail
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Logger
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Clipboard
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Encrypt S
- 9 Effective 7
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Constructors S
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Dependency Injection
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Composition
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Interfaces Default
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Import Static S
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Enums
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Lambdas
- 10 Junit 5
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About Junit S
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Test Case
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Suite Test
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Annotations
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Exceptions
- 11 Lambdas 7
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Expressions S
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Functional Interfaces
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Streams
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Common Operations
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Default Methods
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Static Methods S
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Single Responsibility
- 12 JavaFX 6
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Openjfx
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Scene Builder
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First App
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Jar Archive
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On Action
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Change Listener
- 13 Maven 4
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Demo
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Spring Boot
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Junit
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Guava
- 14 Spring Boot 13
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Quick start S
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Rest service S
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Consuming rest S
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Templates S
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Security auth S
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Command line S
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Scheduled task S
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Ajax S
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Jdbc mysql S
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Encrypt password S
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Https S
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Jwt S
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Post request S
R
Q
Before
p19 A @Before method is executed for each test.T
/**
* Before method - exectuted before each test.
*
* JUnit creates a new instance for each test it runs.
*/
package com.minte9.junit.annotations;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
public class BeforeApp {
private Squares squares;
@Before public void executedBeforeEach() { // Look Here
squares = new Squares();
squares.add(3); // 9
squares.add(5); // 25
System.out.println("Squares initialized!"); // executed twice
// Squares initialized!
// Squares initialized!
}
@Test public void average() {
assertEquals(squares.average(), 17); // passed
}
@Test public void sum() {
assertEquals(squares.sum(), 34); // passed
}
}
class Squares {
private List<Integer> squares = new ArrayList<>();
public void add(int x) {
squares.add(x * x);
}
public int average() {
return sum() / squares.size();
}
public int sum() {
return squares.stream().mapToInt(Integer::intValue).sum();
}
}
Before Class
Static method @BeforeClass is executed once before all tests.T
/**
* BeforeClass method - executed once before all tests.
*
* JUnit creates a new instance for each test it runs.
*/
package com.minte9.junit.annotations;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.List;
import org.junit.BeforeClass;
import org.junit.Test;
public class BeforeClassApp {
private static SQ squares;
@BeforeClass static public void executedBeforeOnce() { // Look Here
squares = new SQ();
squares.add(3); // 9
squares.add(5); // 25
System.out.println("Squares initialized!"); // executed once
// Squares initialized!
}
@Test public void average() {
assertEquals(squares.average(), 17); // passed
}
@Test public void sum() {
assertEquals(squares.sum(), 34); // passed
}
}
class SQ {
private List<Integer> squares = new ArrayList<>();
public void add(int x) {
squares.add(x * x);
}
public int average() {
return sum() / squares.size();
}
public int sum() {
return squares.stream().mapToInt(Integer::intValue).sum();
}
}
After
p43 An @After method runs after every test method.T
/**
* After method - exectuted after each test.
*
* JUnit creates a new instance for each test it runs.
*/
package com.minte9.junit.annotations;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class AfterApp {
@Before public void start() {
System.out.println("Db connection start");
}
@Test public void run() {
System.out.println("App run test");
}
@After public void end() {
System.out.println("Db connection close");
}
/*
Db connection start
App run test
Db connection close
*/
}
class App {}
➥ Questions
Last update: 515 days ago