Linux Terminal Command to test the OpenCV

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The final point of installation of open CV is as follows:

"[optional] Running tests

Get the required test data from OpenCV extra repository.

For example git clone https://github.com/opencv/opencv_extr...

set OPENCV_TEST_DATA_PATH environment variable to <path to opencv_extra/testdata>.
execute tests from build directory.

For example <cmake_build_dir>/bin/opencv_test_core"

What's the command for testing the software installation? I'm currently sitting in ../tesdata folder with no clue what command are they asking me to use.