Does "RUN_SLOW=1 pytest tests/" use /tmp directory?

Hi, I am trying to create a new and big dataset, I follow the instruction in datasets/ at master 路 huggingface/datasets 路 GitHub where I have to test the real and dummy data using the command RUN_SLOW=1 pytest tests/ But somehow I get always space issue even my ~/.cache directory has enough space. My new datasets is about 17GB. So, I am wondering if this test is using the /tmp directory to store its downloaded files. The /tmp is already about 10GB and I can鈥檛 increase it anymore. If it is true that the test uses /tmp directory, how can I tell it to use different directory?