cd

Change the current working directory of the shell.

Switch into a directory

cd tests/

As with any file and folder parameters, you can traverse "up" a directory.

cd ../../tests

Another shortcut for going up a directory is to add additional dots for each folder.

cd ... => cd ../../ // back 2 directory

cd .... => cd ../../../ // back 3 directory

cd ..... // and so on...