import os
import os.path
import pkg_resources
import stat

from pre_commit.commands import install
from pre_commit.commands import uninstall
from pre_commit.runner import Runner


def test_install_pre_commit(empty_git_dir):
    runner = Runner(empty_git_dir)
    ret = install(runner)
    assert ret == 0
    assert os.path.exists(runner.pre_commit_path)
    pre_commit_contents = open(runner.pre_commit_path).read()
    pre_commit_sh = pkg_resources.resource_filename('pre_commit', 'resources/pre-commit.sh')
    expected_contents = open(pre_commit_sh).read()
    assert pre_commit_contents == expected_contents
    stat_result = os.stat(runner.pre_commit_path)
    assert stat_result.st_mode & (stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH)


def test_uninstall_pre_commit_does_not_blow_up_when_not_there(empty_git_dir):
    runner = Runner(empty_git_dir)
    ret = uninstall(runner)
    assert ret == 0


def test_uninstall(empty_git_dir):
    runner = Runner(empty_git_dir)
    assert not os.path.exists(runner.pre_commit_path)
    install(runner)
    assert os.path.exists(runner.pre_commit_path)
    uninstall(runner)
    assert not os.path.exists(runner.pre_commit_path)