Tired of writing tests? Hypothesis has you covered!
def test_loading_time_is_not_visible():
    assert False
============================= test session starts ==============================
platform emscripten -- Python 3.11.3, pytest-7.2.2, pluggy-1.2.0 -- /home/pyodide/this.program
cachedir: .pytest_cache
hypothesis profile 'browser' -> database=None, deadline=None, derandomize=True
rootdir: /home/pyodide
plugins: hypothesis-6.98.3
collecting ...
      It's an interactive demo for
      the Hypothesis Ghostwriter, a Python tool which helps you to get started with
      property-based testing. Thanks to Pyodide, we can run Python
      client-side to both generate and execute tests - and even
      pip install missing packages! If you're not sure how to get
      started, try the gzip.compress example and replacing
      data=st.nothing() with data=st.binary() to
      generate bytestrings.
    
      Want to install Hypothesis locally?
      pip install "hypothesis[cli]" and you'll get the Python
      library and a hypothesis write command which can do all this
      and more. If you're already using Hypothesis, check out
      HypoFuzz: it's a world-class fuzzing
      workflow for your test suite.