import pytest
from yarl import URL


def test_yarl_urls():
    expected_1 = 'https://dify.ai/api'
    assert str(URL('https://dify.ai') / 'api') == expected_1
    assert str(URL('https://dify.ai/') / 'api') == expected_1

    expected_2 = 'http://dify.ai:12345/api'
    assert str(URL('http://dify.ai:12345') / 'api') == expected_2
    assert str(URL('http://dify.ai:12345/') / 'api') == expected_2

    expected_3 = 'https://dify.ai/api/v1'
    assert str(URL('https://dify.ai') / 'api' / 'v1') == expected_3
    assert str(URL('https://dify.ai') / 'api/v1') == expected_3
    assert str(URL('https://dify.ai/') / 'api/v1') == expected_3
    assert str(URL('https://dify.ai/api') / 'v1') == expected_3
    assert str(URL('https://dify.ai/api/') / 'v1') == expected_3

    with pytest.raises(ValueError) as e1:
        str(URL('https://dify.ai') / '/api')
    assert str(e1.value) == "Appending path '/api' starting from slash is forbidden"