import pytest
from client import approximate_size


def test_1kb():
    assert approximate_size(1_000) == "1.0 KB"


def test_100mb():
    assert approximate_size(100_000_000) == "100.0 MB"


def test_1gb():
    assert approximate_size(1_000_000_000) == "1.0 GB"


def test_docstring():
    assert approximate_size.__doc__ is not None