junit: no tests found

Question

I have inherited a Java project and am new to Java development. I feel a good way for me to get comfortable with the code is to write some tests around it. I\'m writing my c

Answer 1

In my case, I needed junit4-version.jar in the classpath of the task junit and also:

ant-version.jar
ant-junit-version.jar
ant-junit4-version.jar

at the library of my ant installation (/usr/share/ant/lib).

I was getting the error "junit.framework.AssertionFailedError: No tests found in ..." while I hadn't had ant-junit4-*version*.jar in the right place.

I corrected this by installing ant-optional debian/ubuntu package:

apt-get install ant-optional

Answer 2

I had it when using data provider and one of the parameters had a new line character, like this:

@DataProvider
public static Object[][] invalidAdjustment() {
    return new Object[][]{
            {"some \n text", false},
            };
}

Removing the \n solved the issue

Answer 3

I had the same issue, in Intellij IDEA, for Java framework. I was doing all right:

• the class inherited from TestCase
• I've imported junit.framework.TestCase
• I've add the decoration @Test

But I did one thing wrong: the name of the method didn't start with "test", in fact was:

@Test
public void getSomethingTest(){

and when I changed it into:

@Test
public void testGetSomethingTest(){

I've resolved: the executor was finally able to recognize this method as a test method. I've changed nothing else.

Answer 4

I was fretting with this and none of the answers helped me until i moved the test source file from this folder:

src/test/java/com/junit/test

up to this folder:

src/test/java/com/junit

Answer 5

Extending junit.framework.TestCase is the old JUnit 3 approach of implementing test cases which doesnt work as no methods start with the letters test. Since you're using JUnit 4, just declare the class as

public class EmailProviderTest {

and the test method will be found from the @Test annotation.

Read: JUnit confusion: use 'extend Testcase' or '@Test'?

Answer 6

The other reason generally i see people having method parameters, remove any parameters you might have in the test method, regardless you add @Test annotation , you need to have your method name starting "test" in order for Junit to pick you testcase. hope it helps.