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import json

import os

import shutil

import sys

from unittest import mock

import pytest

import pre_commit.constants as C

from pre_commit import envcontext

from pre_commit import parse_shebang

from pre_commit.languages import node

from pre_commit.prefix import Prefix

from pre_commit.util import cmd_output

from testing.util import xfailif_windows

ACTUAL_GET_DEFAULT_VERSION = node.get_default_version.__wrapped__

@pytest.fixture

def is_linux():

with mock.patch.object(sys, 'platform', 'linux'):

yield

@pytest.fixture

def is_win32():

with mock.patch.object(sys, 'platform', 'win32'):

yield

@pytest.fixture

def find_exe_mck():

with mock.patch.object(parse_shebang, 'find_executable') as mck:

yield mck

@pytest.mark.usefixtures('is_linux')

def test_sets_system_when_node_and_npm_are_available(find_exe_mck):

find_exe_mck.return_value = '/path/to/exe'

assert ACTUAL_GET_DEFAULT_VERSION() == 'system'

@pytest.mark.usefixtures('is_linux')

def test_uses_default_when_node_and_npm_are_not_available(find_exe_mck):

find_exe_mck.return_value = None

assert ACTUAL_GET_DEFAULT_VERSION() == C.DEFAULT

@pytest.mark.usefixtures('is_win32')

def test_sets_default_on_windows(find_exe_mck):

find_exe_mck.return_value = '/path/to/exe'

assert ACTUAL_GET_DEFAULT_VERSION() == C.DEFAULT

@xfailif_windows # pragma: win32 no cover

def test_healthy_system_node(tmpdir):

tmpdir.join('package.json').write('{"name": "t", "version": "1.0.0"}')

prefix = Prefix(str(tmpdir))

node.install_environment(prefix, 'system', ())

assert node.healthy(prefix, 'system')

@xfailif_windows # pragma: win32 no cover

def test_unhealthy_if_system_node_goes_missing(tmpdir):

bin_dir = tmpdir.join('bin').ensure_dir()

node_bin = bin_dir.join('node')

node_bin.mksymlinkto(shutil.which('node'))

prefix_dir = tmpdir.join('prefix').ensure_dir()

prefix_dir.join('package.json').write('{"name": "t", "version": "1.0.0"}')

path = ('PATH', (str(bin_dir), os.pathsep, envcontext.Var('PATH')))

with envcontext.envcontext((path,)):

prefix = Prefix(str(prefix_dir))

node.install_environment(prefix, 'system', ())

assert node.healthy(prefix, 'system')

node_bin.remove()

assert not node.healthy(prefix, 'system')

@xfailif_windows # pragma: win32 no cover

def test_installs_without_links_outside_env(tmpdir):

tmpdir.join('bin/main.js').ensure().write(

'#!/usr/bin/env node\n'

'_ = require("lodash"); console.log("success!")\n',

)

tmpdir.join('package.json').write(

json.dumps({

'name': 'foo',

'version': '0.0.1',

'bin': {'foo': './bin/main.js'},

'dependencies': {'lodash': '*'},

}),

)

prefix = Prefix(str(tmpdir))

node.install_environment(prefix, 'system', ())

assert node.healthy(prefix, 'system')

# this directory shouldn't exist, make sure we succeed without it existing

cmd_output('rm', '-rf', str(tmpdir.join('node_modules')))

with node.in_env(prefix, 'system'):

assert cmd_output('foo')[1] == 'success!\n'

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