How to use setPreferences method of junit.runner.BaseTestRunner class

Best junit code snippet using junit.runner.BaseTestRunner.setPreferences

Source: BaseTestRunner.java Github

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...14/​* */​ public BaseTestRunner()15/​* */​ {16/​* 5 */​ throw new RuntimeException("Stub!"); } 17/​* 6 */​ public synchronized void startTest(Test test) { throw new RuntimeException("Stub!"); } 18/​* 7 */​ protected static void setPreferences(Properties preferences) { throw new RuntimeException("Stub!"); } 19/​* 8 */​ protected static Properties getPreferences() { throw new RuntimeException("Stub!"); } 20/​* 9 */​ public static void savePreferences() throws IOException { throw new RuntimeException("Stub!"); } 21/​* 10 */​ public void setPreference(String key, String value) { throw new RuntimeException("Stub!"); } 22/​* 11 */​ public synchronized void endTest(Test test) { throw new RuntimeException("Stub!"); } 23/​* 12 */​ public synchronized void addError(Test test, Throwable t) { throw new RuntimeException("Stub!"); } 24/​* 13 */​ public synchronized void addFailure(Test test, AssertionFailedError t) { throw new RuntimeException("Stub!"); } 25/​* */​ public abstract void testStarted(String paramString);26/​* */​ 27/​* */​ public abstract void testEnded(String paramString);28/​* */​ 29/​* */​ public abstract void testFailed(int paramInt, Test paramTest, Throwable paramThrowable);30/​* */​ 31/​* 17 */​ public Test getTest(String suiteClassName) { throw new RuntimeException("Stub!"); } 32/​* 18 */​ public String elapsedTimeAsString(long runTime) { throw new RuntimeException("Stub!"); } ...

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setPreferences

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1import junit.runner.BaseTestRunner;2import junit.runner.Version;3BaseTestRunner.setPreferences(Version.id(), true, false, false, false, false);4import junit.textui.TestRunner;5import junit.framework.TestSuite;6import junit.framework.Test;7TestSuite suite = new TestSuite();8suite.addTest(new TestSuite(FirstTest.class));9TestRunner.run(suite);10import junit.textui.TestRunner;11import junit.framework.TestSuite;12import junit.framework.Test;13TestSuite suite = new TestSuite();14suite.addTest(new TestSuite(FirstTest.class));15TestRunner.run(suite);16import junit.textui.TestRunner;17import junit.framework.TestSuite;18import junit.framework.Test;19TestSuite suite = new TestSuite();20suite.addTest(new TestSuite(FirstTest.class));21TestRunner.run(suite);22import junit.textui.TestRunner;23import junit.framework.TestSuite;24import junit.framework.Test;25TestSuite suite = new TestSuite();26suite.addTest(new TestSuite(FirstTest.class));27TestRunner.run(suite);28import junit.textui.TestRunner;29import junit.framework.TestSuite;30import junit.framework.Test;31TestSuite suite = new TestSuite();32suite.addTest(new TestSuite(FirstTest.class));33TestRunner.run(suite);34import junit.textui.TestRunner;35import junit.framework.TestSuite;36import junit.framework.Test;37TestSuite suite = new TestSuite();38suite.addTest(new TestSuite(FirstTest.class));39TestRunner.run(suite);40import junit.textui.TestRunner;41import junit.framework.TestSuite;42import junit.framework.Test;43TestSuite suite = new TestSuite();44suite.addTest(new TestSuite(FirstTest.class));45TestRunner.run(suite);46import junit.textui.TestRunner;47import junit.framework.TestSuite;48import junit.framework.Test;49TestSuite suite = new TestSuite();50suite.addTest(new TestSuite(FirstTest.class));51TestRunner.run(suite);52import junit.textui.TestRunner;53import junit.framework.TestSuite;54import junit.framework.Test;55TestSuite suite = new TestSuite();56suite.addTest(new TestSuite(FirstTest.class));57TestRunner.run(suite);

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I provide this post for both IntelliJ and Eclipse.

Eclipse:

For making unit test for your project, please follow these steps (I am using Eclipse in order to write this test):

1- Click on New -> Java Project.

Create Project

2- Write down your project name and click on finish.

Create Project

3- Right click on your project. Then, click on New -> Class.

Create Class

4- Write down your class name and click on finish.

Create Class

Then, complete the class like this:

public class Math {
    int a, b;
    Math(int a, int b) {
        this.a = a;
        this.b = b;
    }
    public int add() {
        return a + b;
    }
}

5- Click on File -> New -> JUnit Test Case.

Create JUnite Test

6- Check setUp() and click on finish. SetUp() will be the place that you initialize your test.

Check SetUp()

7- Click on OK.

Add JUnit

8- Here, I simply add 7 and 10. So, I expect the answer to be 17. Complete your test class like this:

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class MathTest {
    Math math;
    @Before
    public void setUp() throws Exception {
        math = new Math(7, 10);
    }
    @Test
    public void testAdd() {
        Assert.assertEquals(17, math.add());
    }
}

9- Write click on your test class in package explorer and click on Run as -> JUnit Test.

Run JUnit Test

10- This is the result of the test.

Result of The Test

IntelliJ: Note that I used IntelliJ IDEA community 2020.1 for the screenshots. Also, you need to set up your jre before these steps. I am using JDK 11.0.4.

1- Right-click on the main folder of your project-> new -> directory. You should call this 'test'. enter image description here 2- Right-click on the test folder and create the proper package. I suggest creating the same packaging names as the original class. Then, you right-click on the test directory -> mark directory as -> test sources root. enter image description here 3- In the right package in the test directory, you need to create a Java class (I suggest to use Test.java). enter image description here 4- In the created class, type '@Test'. Then, among the options that IntelliJ gives you, select Add 'JUnitx' to classpath. enter image description here enter image description here 5- Write your test method in your test class. The method signature is like:

@Test
public void test<name of original method>(){
...
}

You can do your assertions like below:

Assertions.assertTrue(f.flipEquiv(node1_1, node2_1));

These are the imports that I added:

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

enter image description here

This is the test that I wrote: enter image description here

You can check your methods like below:

Assertions.assertEquals(<Expected>,<actual>);
Assertions.assertTrue(<actual>);
...

For running your unit tests, right-click on the test and click on Run . enter image description here

If your test passes, the result will be like below: enter image description here

https://stackoverflow.com/questions/8751553/how-to-write-a-unit-test

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JUnit Tutorial:

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Here are the detailed JUnit testing chapters to help you get started:

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JUnit Certification:

You can also check out our JUnit certification if you wish to take your career in Selenium automation testing with JUnit to the next level.

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