from pathlib import Path

from textwrap import dedent

from pyproject_requirements_txt import convert_requirements_txt

def test_requirements_add_pkgname():

    reqs_txt = dedent(r"""

        good@git+https://github.com/monty/spam.git@master#egg=bad

        git+https://github.com/monty/spam.git@master#egg=ugly

        https://example.com/undead.tar.gz#egg=undead ; python_version > 3.0

    """)

    result = convert_requirements_txt(reqs_txt.splitlines())

    expected = [

        'good@git+https://github.com/monty/spam.git@master#egg=bad',

        'ugly@git+https://github.com/monty/spam.git@master#egg=ugly',

        'undead@https://example.com/undead.tar.gz#egg=undead ; python_version > 3.0',

    ]

    assert result == expected

def test_requirements_preprocess(monkeypatch):

    reqs_txt = dedent(r"""

        Normal_Req ~= 1.2.0

           whitespace-stripped < 3    <END>

        # indentation is preserved in continuations:

        foo <=\

            30

        bar<=   \

        30

        # names and operators can be split:

        this-was-\

        too-long<\

        =30  

        # this is not a multi-line comment \

        some-dep

             # neither is this \

        other-dep

        another-dep  # but this *is* a multi-line coment \

        so any garbage can be here

        dep-a # and this comment ends with the blank line below \

        dep-b

        ${ENVVAR}

        whitespace-stripped-before-substitution   ${SPACE}

        ${MISSING_ENVVAR}

    """.replace('<END>', ''))

    monkeypatch.setenv('ENVVAR', 'package-from-env')

    monkeypatch.setenv('SPACE', ' ')

    monkeypatch.delenv('MISSING_ENVVAR', raising=False)

    result = convert_requirements_txt(reqs_txt.splitlines())

    expected = [

        'Normal_Req ~= 1.2.0',

        'whitespace-stripped < 3',

        'foo <=    30',

        'bar<=   30',

        'this-was-too-long<=30',

        'some-dep',

        'other-dep',

        'another-dep',

        'dep-a',

        'dep-b',

        'package-from-env',

        'whitespace-stripped-before-substitution    ',

        '${MISSING_ENVVAR}',

    ]

    #result = expected

    assert result == expected

    # This test uses pip internals, so it might break in the future.

    from pip._internal.req.req_file import preprocess

    expected = [line for lineno, line in preprocess(reqs_txt)]

    assert result == expected