How to get the path of src/test/resources directory in JUnit?

Question

I know I can load a file from src/test/resources with:

getClass().getResource("somefile").getFile() 

But how can I get the full path to the src/test/resources directory, i.e. I don't want to load a file, I just want to know the path of the directory?

Answer 1

You don't need to mess with class loaders. In fact it's a bad habit to get into because class loader resources are not java.io.File objects when they are in a jar archive.

Maven automatically sets the current working directory before running tests, so you can just use:

    File resourcesDirectory = new File("src/test/resources"); 

resourcesDirectory.getAbsolutePath() will return the correct value if that is what you really need.

I recommend creating a src/test/data directory if you want your tests to access data via the file system. This makes it clear what you're doing.

Answer 2

Try working with the ClassLoader class:

ClassLoader classLoader = getClass().getClassLoader(); File file = new File(classLoader.getResource("somefile").getFile()); System.out.println(file.getAbsolutePath()); 

A ClassLoader is responsible for loading in classes. Every class has a reference to a ClassLoader. This code returns a File from the resource directory. Calling getAbsolutePath() on it returns its absolute Path.

Javadoc for ClassLoader: http://docs.oracle.com/javase/7/docs/api/java/lang/ClassLoader.html