import pytest

from pyucc.core import duplicates as dupmod


def test_fingerprints_vary_with_k():
    text = "def func():\n    return 1\n\n# comment\nprint(func())\n"
    # small k should produce more k-grams (and likely more fingerprints)
    fps_small = dupmod._fingerprints_for_text(text, k=3, window=4)
    fps_large = dupmod._fingerprints_for_text(text, k=15, window=4)
    assert isinstance(fps_small, set)
    assert isinstance(fps_large, set)
    # Expect different fingerprint sets
    assert fps_small != fps_large


def test_fingerprints_vary_with_window():
    text = "line1 line2 line3 line4 line5 line6 line7"
    fps_w1 = dupmod._fingerprints_for_text(text, k=5, window=1)
    fps_w4 = dupmod._fingerprints_for_text(text, k=5, window=4)
    assert isinstance(fps_w1, set)
    assert isinstance(fps_w4, set)
    # window=1 should effectively select many more fingerprints than larger window
    assert len(fps_w1) >= len(fps_w4)