# Copyright 2010-2025 The pygit2 contributors
#
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"""Tests for merging and information about it."""

from pathlib import Path
import pytest

import pygit2
from pygit2.enums import RepositoryState


def test_cherrypick_none(mergerepo):
    with pytest.raises(TypeError):
        mergerepo.cherrypick(None)


def test_cherrypick_invalid_hex(mergerepo):
    branch_head_hex = '12345678'
    with pytest.raises(KeyError):
        mergerepo.cherrypick(branch_head_hex)


def test_cherrypick_already_something_in_index(mergerepo):
    branch_head_hex = '03490f16b15a09913edb3a067a3dc67fbb8d41f1'
    branch_oid = mergerepo.get(branch_head_hex).id
    with (Path(mergerepo.workdir) / 'inindex.txt').open('w') as f:
        f.write('new content')
    mergerepo.index.add('inindex.txt')
    with pytest.raises(pygit2.GitError):
        mergerepo.cherrypick(branch_oid)


def test_cherrypick_remove_conflicts(mergerepo):
    assert mergerepo.state() == RepositoryState.NONE
    assert not mergerepo.message

    other_branch_tip = '1b2bae55ac95a4be3f8983b86cd579226d0eb247'
    mergerepo.cherrypick(other_branch_tip)

    assert mergerepo.state() == RepositoryState.CHERRYPICK
    assert mergerepo.message.startswith('commit to provoke a conflict')

    idx = mergerepo.index
    conflicts = idx.conflicts
    assert conflicts is not None
    conflicts['.gitignore']
    del idx.conflicts['.gitignore']
    with pytest.raises(KeyError):
        conflicts.__getitem__('.gitignore')
    assert idx.conflicts is None

    mergerepo.state_cleanup()
    assert mergerepo.state() == RepositoryState.NONE
    assert not mergerepo.message