#!/usr/bin/env vpython3
# coding=utf-8
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

from __future__ import print_function
from __future__ import unicode_literals

import io
import os
import sys
import tempfile
import time
import unittest

if sys.version_info.major == 2:
  from StringIO import StringIO
  import mock
else:
  from io import StringIO
  from unittest import mock

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from testing_support import trial_dir

import gclient_utils
import subprocess2


class CheckCallAndFilterTestCase(unittest.TestCase):
  class ProcessIdMock(object):
    def __init__(self, test_string, return_code=0):
      self.stdout = test_string.encode('utf-8')
      self.pid = 9284
      self.return_code = return_code

    def wait(self):
      return self.return_code

  def PopenMock(self, *args, **kwargs):
    kid = self.kids.pop(0)
    stdout = kwargs.get('stdout')
    os.write(stdout, kid.stdout)
    return kid

  def setUp(self):
    super(CheckCallAndFilterTestCase, self).setUp()
    self.printfn = io.StringIO()
    self.stdout = io.BytesIO()
    self.kids = []
    if sys.version_info.major == 2:
      mock.patch('sys.stdout', self.stdout).start()
      mock.patch('__builtin__.print', self.printfn.write).start()
    else:
      mock.patch('sys.stdout', mock.Mock()).start()
      mock.patch('sys.stdout.buffer', self.stdout).start()
      mock.patch('sys.stdout.isatty', return_value=False).start()
      mock.patch('builtins.print', self.printfn.write).start()
    mock.patch('sys.stdout.flush', lambda: None).start()
    self.addCleanup(mock.patch.stopall)

  @mock.patch('subprocess2.Popen')
  def testCheckCallAndFilter(self, mockPopen):
    cwd = 'bleh'
    args = ['boo', 'foo', 'bar']
    test_string = 'ahah\naccb\nallo\naddb\n✔'

    self.kids = [self.ProcessIdMock(test_string)]
    mockPopen.side_effect = self.PopenMock

    line_list = []
    result = gclient_utils.CheckCallAndFilter(
        args, cwd=cwd, show_header=True, always_show_header=True,
        filter_fn=line_list.append)

    self.assertEqual(result, test_string.encode('utf-8'))
    self.assertEqual(line_list, [
        '________ running \'boo foo bar\' in \'bleh\'\n',
        'ahah',
        'accb',
        'allo',
        'addb',
        '✔'])
    self.assertEqual(self.stdout.getvalue(), b'')

    mockPopen.assert_called_with(
        args, cwd=cwd, stdout=mock.ANY, stderr=subprocess2.STDOUT,
        bufsize=0)

  @mock.patch('time.sleep')
  @mock.patch('subprocess2.Popen')
  def testCheckCallAndFilter_RetryOnce(self, mockPopen, mockTime):
    cwd = 'bleh'
    args = ['boo', 'foo', 'bar']
    test_string = 'ahah\naccb\nallo\naddb\n✔'

    self.kids = [
        self.ProcessIdMock(test_string, 1),
        self.ProcessIdMock(test_string, 0)
    ]
    mockPopen.side_effect = self.PopenMock

    line_list = []
    result = gclient_utils.CheckCallAndFilter(
        args, cwd=cwd, show_header=True, always_show_header=True,
        filter_fn=line_list.append, retry=True)

    self.assertEqual(result, test_string.encode('utf-8'))

    self.assertEqual(line_list, [
        '________ running \'boo foo bar\' in \'bleh\'\n',
        'ahah',
        'accb',
        'allo',
        'addb',
        '✔',
        '________ running \'boo foo bar\' in \'bleh\' attempt 2 / 4\n',
        'ahah',
        'accb',
        'allo',
        'addb',
        '✔',
    ])

    mockTime.assert_called_with(gclient_utils.RETRY_INITIAL_SLEEP)

    self.assertEqual(
        mockPopen.mock_calls,
        [
            mock.call(
                args, cwd=cwd, stdout=mock.ANY,
                stderr=subprocess2.STDOUT, bufsize=0),
            mock.call(
                args, cwd=cwd, stdout=mock.ANY,
                stderr=subprocess2.STDOUT, bufsize=0),
        ])

    self.assertEqual(self.stdout.getvalue(), b'')
    self.assertEqual(
        self.printfn.getvalue(),
        'WARNING: subprocess \'"boo" "foo" "bar"\' in bleh failed; will retry '
        'after a short nap...')

  @mock.patch('subprocess2.Popen')
  def testCheckCallAndFilter_PrintStdout(self, mockPopen):
    cwd = 'bleh'
    args = ['boo', 'foo', 'bar']
    test_string = 'ahah\naccb\nallo\naddb\n✔'

    self.kids = [self.ProcessIdMock(test_string)]
    mockPopen.side_effect = self.PopenMock

    result = gclient_utils.CheckCallAndFilter(
        args, cwd=cwd, show_header=True, always_show_header=True,
        print_stdout=True)

    self.assertEqual(result, test_string.encode('utf-8'))
    self.assertEqual(self.stdout.getvalue().splitlines(), [
        b"________ running 'boo foo bar' in 'bleh'",
        b'ahah',
        b'accb',
        b'allo',
        b'addb',
        b'\xe2\x9c\x94',
    ])


class AnnotatedTestCase(unittest.TestCase):
  def setUp(self):
    self.out = gclient_utils.MakeFileAnnotated(io.BytesIO())
    self.annotated = gclient_utils.MakeFileAnnotated(
        io.BytesIO(), include_zero=True)

  def testWrite(self):
    test_cases = [
        ('test string\n', b'test string\n'),
        (b'test string\n', b'test string\n'),
        ('✔\n', b'\xe2\x9c\x94\n'),
        (b'\xe2\x9c\x94\n', b'\xe2\x9c\x94\n'),
        ('first line\nsecondline\n', b'first line\nsecondline\n'),
        (b'first line\nsecondline\n', b'first line\nsecondline\n'),
    ]

    for test_input, expected_output in test_cases:
      out = gclient_utils.MakeFileAnnotated(io.BytesIO())
      out.write(test_input)
      self.assertEqual(out.getvalue(), expected_output)

  def testWrite_Annotated(self):
    test_cases = [
        ('test string\n', b'0>test string\n'),
        (b'test string\n', b'0>test string\n'),
        ('✔\n', b'0>\xe2\x9c\x94\n'),
        (b'\xe2\x9c\x94\n', b'0>\xe2\x9c\x94\n'),
        ('first line\nsecondline\n', b'0>first line\n0>secondline\n'),
        (b'first line\nsecondline\n', b'0>first line\n0>secondline\n'),
    ]

    for test_input, expected_output in test_cases:
      out = gclient_utils.MakeFileAnnotated(io.BytesIO(), include_zero=True)
      out.write(test_input)
      self.assertEqual(out.getvalue(), expected_output)

  def testByteByByteInput(self):
    self.out.write(b'\xe2')
    self.out.write(b'\x9c')
    self.out.write(b'\x94')
    self.out.write(b'\n')
    self.out.write(b'\xe2')
    self.out.write(b'\n')
    self.assertEqual(self.out.getvalue(), b'\xe2\x9c\x94\n\xe2\n')

  def testByteByByteInput_Annotated(self):
    self.annotated.write(b'\xe2')
    self.annotated.write(b'\x9c')
    self.annotated.write(b'\x94')
    self.annotated.write(b'\n')
    self.annotated.write(b'\xe2')
    self.annotated.write(b'\n')
    self.assertEqual(self.annotated.getvalue(), b'0>\xe2\x9c\x94\n0>\xe2\n')

  def testFlush_Annotated(self):
    self.annotated.write(b'first line\nsecond line')
    self.assertEqual(self.annotated.getvalue(), b'0>first line\n')
    self.annotated.flush()
    self.assertEqual(
        self.annotated.getvalue(), b'0>first line\n0>second line\n')


class SplitUrlRevisionTestCase(unittest.TestCase):
  def testSSHUrl(self):
    url = "ssh://test@example.com/test.git"
    rev = "ac345e52dc"
    out_url, out_rev = gclient_utils.SplitUrlRevision(url)
    self.assertEqual(out_rev, None)
    self.assertEqual(out_url, url)
    out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
    self.assertEqual(out_rev, rev)
    self.assertEqual(out_url, url)
    url = "ssh://example.com/test.git"
    out_url, out_rev = gclient_utils.SplitUrlRevision(url)
    self.assertEqual(out_rev, None)
    self.assertEqual(out_url, url)
    out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
    self.assertEqual(out_rev, rev)
    self.assertEqual(out_url, url)
    url = "ssh://example.com/git/test.git"
    out_url, out_rev = gclient_utils.SplitUrlRevision(url)
    self.assertEqual(out_rev, None)
    self.assertEqual(out_url, url)
    out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
    self.assertEqual(out_rev, rev)
    self.assertEqual(out_url, url)
    rev = "test-stable"
    out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
    self.assertEqual(out_rev, rev)
    self.assertEqual(out_url, url)
    url = "ssh://user-name@example.com/~/test.git"
    out_url, out_rev = gclient_utils.SplitUrlRevision(url)
    self.assertEqual(out_rev, None)
    self.assertEqual(out_url, url)
    out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
    self.assertEqual(out_rev, rev)
    self.assertEqual(out_url, url)
    url = "ssh://user-name@example.com/~username/test.git"
    out_url, out_rev = gclient_utils.SplitUrlRevision(url)
    self.assertEqual(out_rev, None)
    self.assertEqual(out_url, url)
    out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
    self.assertEqual(out_rev, rev)
    self.assertEqual(out_url, url)
    url = "git@github.com:dart-lang/spark.git"
    out_url, out_rev = gclient_utils.SplitUrlRevision(url)
    self.assertEqual(out_rev, None)
    self.assertEqual(out_url, url)
    out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
    self.assertEqual(out_rev, rev)
    self.assertEqual(out_url, url)

  def testSVNUrl(self):
    url = "svn://example.com/test"
    rev = "ac345e52dc"
    out_url, out_rev = gclient_utils.SplitUrlRevision(url)
    self.assertEqual(out_rev, None)
    self.assertEqual(out_url, url)
    out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
    self.assertEqual(out_rev, rev)
    self.assertEqual(out_url, url)


class GClientUtilsTest(trial_dir.TestCase):
  def testHardToDelete(self):
    # Use the fact that tearDown will delete the directory to make it hard to do
    # so.
    l1 = os.path.join(self.root_dir, 'l1')
    l2 = os.path.join(l1, 'l2')
    l3 = os.path.join(l2, 'l3')
    f3 = os.path.join(l3, 'f3')
    os.mkdir(l1)
    os.mkdir(l2)
    os.mkdir(l3)
    gclient_utils.FileWrite(f3, 'foo')
    os.chmod(f3, 0)
    os.chmod(l3, 0)
    os.chmod(l2, 0)
    os.chmod(l1, 0)

  def testUpgradeToHttps(self):
    values = [
        ['', ''],
        [None, None],
        ['foo', 'https://foo'],
        ['http://foo', 'https://foo'],
        ['foo/', 'https://foo/'],
        ['ssh-svn://foo', 'ssh-svn://foo'],
        ['ssh-svn://foo/bar/', 'ssh-svn://foo/bar/'],
        ['codereview.chromium.org', 'https://codereview.chromium.org'],
        ['codereview.chromium.org/', 'https://codereview.chromium.org/'],
        ['http://foo:10000', 'http://foo:10000'],
        ['http://foo:10000/bar', 'http://foo:10000/bar'],
        ['foo:10000', 'http://foo:10000'],
        ['foo:', 'https://foo:'],
    ]
    for content, expected in values:
      self.assertEqual(
          expected, gclient_utils.UpgradeToHttps(content))

  def testParseCodereviewSettingsContent(self):
    values = [
        ['# bleh\n', {}],
        ['\t# foo : bar\n', {}],
        ['Foo:bar', {'Foo': 'bar'}],
        ['Foo:bar:baz\n', {'Foo': 'bar:baz'}],
        [' Foo : bar ', {'Foo': 'bar'}],
        [' Foo : bar \n', {'Foo': 'bar'}],
        ['a:b\n\rc:d\re:f', {'a': 'b', 'c': 'd', 'e': 'f'}],
        ['an_url:http://value/', {'an_url': 'http://value/'}],
        [
          'CODE_REVIEW_SERVER : http://r/s',
          {'CODE_REVIEW_SERVER': 'https://r/s'}
        ],
        ['VIEW_VC:http://r/s', {'VIEW_VC': 'https://r/s'}],
    ]
    for content, expected in values:
      self.assertEqual(
          expected, gclient_utils.ParseCodereviewSettingsContent(content))

  def testFileRead_Bytes(self):
    with gclient_utils.temporary_file() as tmp:
      gclient_utils.FileWrite(
          tmp, b'foo \xe2\x9c bar', mode='wb', encoding=None)
      self.assertEqual('foo \ufffd bar', gclient_utils.FileRead(tmp))

  def testFileRead_Unicode(self):
    with gclient_utils.temporary_file() as tmp:
      gclient_utils.FileWrite(tmp, 'foo ✔ bar')
      self.assertEqual('foo ✔ bar', gclient_utils.FileRead(tmp))

  def testTemporaryFile(self):
    with gclient_utils.temporary_file() as tmp:
      gclient_utils.FileWrite(tmp, 'test')
      self.assertEqual('test', gclient_utils.FileRead(tmp))
    self.assertFalse(os.path.exists(tmp))


if __name__ == '__main__':
  unittest.main()

# vim: ts=2:sw=2:tw=80:et: