java


JUnit before and test


What is the use of a Junit #Before and #Test package in java? How can I use it with netbeans?
Can you be more precise?
Do you need to understand what are #Before and #Test annotation?
#Test annotation is an annotation (since JUnit 4) that indicates the attached method is an unit test. That allows you to use any method name to have a test. For example:
#Test
public void doSomeTestOnAMethod() {
// Your test goes here.
...
}
The #Before annotation indicates that the attached method will be run before any test in the class. It is mainly used to setup some objects needed by your tests:
(edited to add imports) :
import static org.junit.Assert.*; // Allows you to use directly assert methods, such as assertTrue(...), assertNull(...)
import org.junit.Test; // for #Test
import org.junit.Before; // for #Before
public class MyTest {
private AnyObject anyObject;
#Before
public void initObjects() {
anyObject = new AnyObject();
}
#Test
public void aTestUsingAnyObject() {
// Here, anyObject is not null...
assertNotNull(anyObject);
...
}
}
If I understood you correctly, you want to know, what the annotation #Before means.
The annotation marks a method as to be executed before each test will be executed. There you can implement the old setup() procedure.
The #Test annotation marks the following method as a JUnit test. The testrunner will identify every method annotated with #Test and executes it. Example:
import org.junit.*;
public class IntroductionTests {
#Test
public void testSum() {
Assert.assertEquals(8, 6 + 2);
}
}
How can i use it with Netbeans? In Netbeans, a testrunner for JUnit tests is included. You can choose it in your Execute Dialog.

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