from app import get_pdf_page_count


def test_page_count_valid_pdf(sample_pdf_path):
    assert get_pdf_page_count(sample_pdf_path) == 3


def test_page_count_corrupt_file(corrupt_file_path):
    assert get_pdf_page_count(corrupt_file_path) is None


def test_page_count_nonexistent_file():
    assert get_pdf_page_count("/nonexistent/file.pdf") is None