import pytest
from aider_gitea.__main__ import generate_branch_name

def test_generate_branch_name_normal():
    # Normal case with alphanumeric title.
    branch = generate_branch_name("123", "Some Issue Title")
    assert branch == "issue-123-some-issue-title"

def test_generate_branch_name_special_characters():
    # Test where title contains special characters.
    branch = generate_branch_name("45", "Issue @ Special!")
    # This test expects only the space replaced and lower-casing.
    # Adjust the expected value if more sophisticated slugification is added.
    assert branch == "issue-45-issue-@-special!"

def test_generate_branch_name_numeric_title():
    # Test where the title starts with numbers.
    branch = generate_branch_name("789", "123 Numbers Here")
    assert branch == "issue-789-123-numbers-here"