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"""Tests for revision walk."""

from pygit2 import GIT_SORT_NONE, GIT_SORT_TIME, GIT_SORT_REVERSE


# In the order given by git log
log = [
    '2be5719152d4f82c7302b1c0932d8e5f0a4a0e98',
    '5ebeeebb320790caf276b9fc8b24546d63316533',
    '4ec4389a8068641da2d6578db0419484972284c8',
    '6aaa262e655dd54252e5813c8e5acd7780ed097d',
    'acecd5ea2924a4b900e7e149496e1f4b57976e51']

REVLOGS = [
    ('Nico von Geyso', 'checkout: moving from i18n to master'),
    ('Nico von Geyso', 'commit: added bye.txt and new'),
    ('Nico von Geyso', 'checkout: moving from master to i18n'),
    ('J. David Ibañez', 'merge i18n: Merge made by recursive.'),
    ('J. David Ibañez', 'commit: Add .gitignore file'),
    ('J. David Ibañez', 'checkout: moving from i18n to master'),
    ('J. David Ibañez', 'commit: Say hello in French'),
    ('J. David Ibañez', 'commit: Say hello in Spanish'),
    ('J. David Ibañez', 'checkout: moving from master to i18n'),
    ('J. David Ibañez', 'commit (initial): First commit')
]


def test_log(testrepo):
    ref = testrepo.lookup_reference('HEAD')
    for i, entry in enumerate(ref.log()):
        assert entry.committer.name == REVLOGS[i][0]
        assert entry.message == REVLOGS[i][1]


def test_walk(testrepo):
    walker = testrepo.walk(log[0], GIT_SORT_TIME)
    assert [x.hex for x in walker] == log

def test_reverse(testrepo):
    walker = testrepo.walk(log[0], GIT_SORT_TIME | GIT_SORT_REVERSE)
    assert [x.hex for x in walker] == list(reversed(log))

def test_hide(testrepo):
    walker = testrepo.walk(log[0], GIT_SORT_TIME)
    walker.hide('4ec4389a8068641da2d6578db0419484972284c8')
    assert len(list(walker)) == 2

def test_hide_prefix(testrepo):
    walker = testrepo.walk(log[0], GIT_SORT_TIME)
    walker.hide('4ec4389a')
    assert len(list(walker)) == 2

def test_reset(testrepo):
    walker = testrepo.walk(log[0], GIT_SORT_TIME)
    walker.reset()
    assert [x.hex for x in walker] == []

def test_push(testrepo):
    walker = testrepo.walk(log[-1], GIT_SORT_TIME)
    assert [x.hex for x in walker] == log[-1:]
    walker.reset()
    walker.push(log[0])
    assert [x.hex for x in walker] == log

def test_sort(testrepo):
    walker = testrepo.walk(log[0], GIT_SORT_TIME)
    walker.sort(GIT_SORT_TIME | GIT_SORT_REVERSE)
    assert [x.hex for x in walker] == list(reversed(log))

def test_simplify_first_parent(testrepo):
    walker = testrepo.walk(log[0], GIT_SORT_TIME)
    walker.simplify_first_parent()
    assert len(list(walker)) == 3

def test_default_sorting(testrepo):
    walker = testrepo.walk(log[0], GIT_SORT_NONE)
    list1 = list([x.id for x in walker])
    walker = testrepo.walk(log[0])
    list2 = list([x.id for x in walker])

    assert list1 == list2
