How to get Junit 4 to ignore a Base Test Class?

Use to @Ignore annotation. It also works on classes. See this one: @Ignore public class IgnoreMe { @Test public void test1() { … } @Test public void test2() { … } } Also, you can annotate a class containing test methods with @Ignore and none of the containing tests will be executed. Source: JUnit JavaDoc

Difference between hamcrest-library Matchers and hamcrest-core CoreMatchers

The Hamcrest matchers are split into several modules. The “core” includes the most basic matchers and abstract classes required for building other matchers. org.hamcrest.CoreMatchers includes the factory methods for just these matchers. The other matchers are in the “library” module grouped by the types of objects they match and are optional. org.hamcrest.Matchers includes both sets … Read more

IntelliJ Error when running unit test: Could not find or load main class ${surefireArgLine}

I had the same problem and i think i found the solution on the vertx-issue tracker. In short you have to configure your IntelliJ Maven (surefire plugin) integration to behave differently. This works for me in IntelliJ 14.1.6 with mvn 3.3.9 Preferences -> Build,Execution,Deployment -> Build Tools -> Maven -> Running Tests For IntelliJ 2019 … Read more

Why use JUnit for testing?

That’s not testing, that’s “looking manually at output” (known in the biz as LMAO). More formally it’s known as “looking manually for abnormal output” (LMFAO). (See note below) Any time you change code, you must run the app and LMFAO for all code affected by those changes. Even in small projects, this is problematic and … Read more

java.lang.NoClassDefFoundError: com/sun/mail/util/MailLogger for JUnit test case for Java mail

The javax.mail-api artifact is only good for compiling against. You actually need to run code, so you need a complete implementation of JavaMail API. Use this: <dependency> <groupId>com.sun.mail</groupId> <artifactId>javax.mail</artifactId> <version>1.6.2</version> </dependency> NOTE: The version number will probably differ. Check the latest version here.

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