When migrating from JUnit4 to JUnit5 I found a change in the behaviour of JUnit4 and JUnit5 and wanted to check if the change was a bug in JUnit4 or in JUnit5 and how to do it correctly. Lets assume the following structure: One base class Another class that inherits from this base class And an actual test cla…
Tag: junit4
NullPointerException on validating email
I am writing a unit test to check the email validation logic. The logic is throwing null pointer exception when you run the test. But it works fine with emulator. Can someone help me solving this? Below is my unit test. The error I am getting is, Answer android.util.Patterns.EMAIL_ADDRESS.matcher(email).match…
How to make a Junit test case fail if there is any exception in the code?
I wrote a Junit test to unit test my code. I want my Junit test case to fail when I get any exception in my code. I tried using an assert statement, but even when I get an exception in my code, my Junit test case is passing. Please can anyone tell me how I can achieve this? Thanks. Answer
AssertEquals(String, String) ComparisonFailure when contents are identical
I’m facing the following scenario: I have an app that spits everything out to the STDOUT (simple company test) and I’m trying to JUnit this. My problem is, when I run the application, it returns me in the Console: (copy and pasted from IntelliJ) Print: And my test is: I’m getting: So, what I…
junit test for stateless ejb + jpa
I would like to write a junit test for my stateless ejb + jpa demo code. I think it is actually not a junit test, it is an integration test. I have a stateless ejb with an injected EntityManager and PostgreSQL database server is used. I use CDI (Spring is not used in my project) and EclipseLink with a persist…
maven error: package org.junit does not exist
I’m trying to create the javadoc with maven and it fails. It also fails when doing the verify. I get the following error: In my pom.xml file I have the following lines: and my local repository contains the junit jar file: The code is fine because in my laptop, which I have no access now, I van run: with…
What is the correct way to write to temp file during unit tests with Maven?
I have written a unit test that writes a file to the file-system, given no path it writes to the working directory; so if executed from the project directory it writes in the project root, if in the projects parent directory it writes to the parents root directory. So what is the correct way to write to the t…
Loop through array, each element a JUnit test
I have a JUnit 4 test that loops through an array of test data: Because it’s all in one test method, the whole test stops as soon as one element in the array fails. Is there a way around that, without making a method for each test item? Maybe something with reflection? Answer Use JUnit 4’s paramet…
Specifying an order to junit 4 tests at the Method level (not class level)
I know this is bad practice, but it needs to be done, or I’ll need to switch to testng. Is there a way, similar to JUnit 3’s testSuite, to specify the order of the tests to be run in a class? Answer If you’re sure you really want to do this: There may be a better way, but this is
How do you assert that a certain exception is thrown in JUnit tests?
How can I use JUnit idiomatically to test that some code throws an exception? While I can certainly do something like this: I recall that there is an annotation or an Assert.xyz or something that is far less kludgy and far more in-the-spirit of JUnit for these sorts of situations. Answer It depends on the JUn…