#!/usr/bin/python
#
# Copyright 2008-2009 Google Inc.  All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Unit tests for gclient_scm.py."""

import shutil
# Import it before super_mox to keep a valid reference.
from subprocess import Popen, PIPE, STDOUT
import tempfile

import gclient_scm
from gclient_test import BaseTestCase as GCBaseTestCase
from super_mox import mox, SuperMoxBaseTestBase


class BaseTestCase(GCBaseTestCase):
  def setUp(self):
    GCBaseTestCase.setUp(self)
    self.mox.StubOutWithMock(gclient_scm.gclient_utils, 'FileRead')
    self.mox.StubOutWithMock(gclient_scm.gclient_utils, 'FileWrite')
    self.mox.StubOutWithMock(gclient_scm.gclient_utils, 'SubprocessCall')
    self.mox.StubOutWithMock(gclient_scm.gclient_utils, 'RemoveDirectory')
    self._CaptureSVNInfo = gclient_scm.scm.SVN.CaptureInfo
    self.mox.StubOutWithMock(gclient_scm.scm.SVN, 'Capture')
    self.mox.StubOutWithMock(gclient_scm.scm.SVN, 'CaptureInfo')
    self.mox.StubOutWithMock(gclient_scm.scm.SVN, 'CaptureStatus')
    self.mox.StubOutWithMock(gclient_scm.scm.SVN, 'Run')
    self.mox.StubOutWithMock(gclient_scm.scm.SVN, 'RunAndGetFileList')
    self._scm_wrapper = gclient_scm.CreateSCM


class SVNWrapperTestCase(BaseTestCase):
  class OptionsObject(object):
     def __init__(self, test_case, verbose=False, revision=None):
      self.verbose = verbose
      self.revision = revision
      self.manually_grab_svn_rev = True
      self.deps_os = None
      self.force = False
      self.nohooks = False

  def Options(self, *args, **kwargs):
    return self.OptionsObject(self, *args, **kwargs)

  def setUp(self):
    BaseTestCase.setUp(self)
    self.root_dir = self.Dir()
    self.args = self.Args()
    self.url = self.Url()
    self.relpath = 'asf'

  def testDir(self):
    members = [
        'COMMAND', 'Capture', 'CaptureHeadRevision', 'CaptureInfo',
        'CaptureStatus', 'DiffItem', 'GenerateDiff', 'GetCheckoutRoot',
        'GetEmail', 'GetFileProperty', 'IsMoved', 'ReadSimpleAuth', 'Run',
        'RunAndFilterOutput', 'RunAndGetFileList',
        'RunCommand', 'cleanup', 'diff', 'export', 'pack', 'relpath', 'revert',
        'revinfo', 'runhooks', 'scm_name', 'status', 'update', 'url',
    ]

    # If you add a member, be sure to add the relevant test!
    self.compareMembers(self._scm_wrapper(), members)

  def testUnsupportedSCM(self):
    args = [self.url, self.root_dir, self.relpath]
    kwargs = {'scm_name' : 'foo'}
    exception_msg = 'Unsupported scm %(scm_name)s' % kwargs
    self.assertRaisesError(exception_msg, self._scm_wrapper, *args, **kwargs)

  def testRunCommandException(self):
    options = self.Options(verbose=False)
    file_path = gclient_scm.os.path.join(self.root_dir, self.relpath, '.git')
    gclient_scm.os.path.exists(file_path).AndReturn(False)

    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    exception = "Unsupported argument(s): %s" % ','.join(self.args)
    self.assertRaisesError(exception, scm.RunCommand,
                           'update', options, self.args)

  def testRunCommandUnknown(self):
    # TODO(maruel): if ever used.
    pass

  def testRevertMissing(self):
    options = self.Options(verbose=True)
    base_path = gclient_scm.os.path.join(self.root_dir, self.relpath)
    gclient_scm.os.path.isdir(base_path).AndReturn(False)
    # It'll to a checkout instead.
    gclient_scm.os.path.exists(gclient_scm.os.path.join(base_path, '.git')
                               ).AndReturn(False)
    print("\n_____ %s is missing, synching instead" % self.relpath)
    # Checkout.
    gclient_scm.os.path.exists(base_path).AndReturn(False)
    files_list = self.mox.CreateMockAnything()
    gclient_scm.scm.SVN.RunAndGetFileList(options,
                                          ['checkout', self.url, base_path],
                                          self.root_dir, files_list)

    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    scm.revert(options, self.args, files_list)

  def testRevertNone(self):
    options = self.Options(verbose=True)
    base_path = gclient_scm.os.path.join(self.root_dir, self.relpath)
    gclient_scm.os.path.isdir(base_path).AndReturn(True)
    gclient_scm.scm.SVN.CaptureStatus(base_path).AndReturn([])
    gclient_scm.scm.SVN.RunAndGetFileList(options,
                                          ['update', '--revision', 'BASE'],
                                          base_path, mox.IgnoreArg())

    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    file_list = []
    scm.revert(options, self.args, file_list)

  def testRevert2Files(self):
    options = self.Options(verbose=True)
    base_path = gclient_scm.os.path.join(self.root_dir, self.relpath)
    gclient_scm.os.path.isdir(base_path).AndReturn(True)
    items = [
      ('M      ', 'a'),
      ('A      ', 'b'),
    ]
    file_path1 = gclient_scm.os.path.join(base_path, 'a')
    file_path2 = gclient_scm.os.path.join(base_path, 'b')
    gclient_scm.scm.SVN.CaptureStatus(base_path).AndReturn(items)
    gclient_scm.os.path.exists(file_path1).AndReturn(True)
    gclient_scm.os.path.isfile(file_path1).AndReturn(True)
    gclient_scm.os.remove(file_path1)
    gclient_scm.os.path.exists(file_path2).AndReturn(True)
    gclient_scm.os.path.isfile(file_path2).AndReturn(True)
    gclient_scm.os.remove(file_path2)
    gclient_scm.scm.SVN.RunAndGetFileList(options,
                                          ['update', '--revision', 'BASE'],
                                          base_path, mox.IgnoreArg())
    print(gclient_scm.os.path.join(base_path, 'a'))
    print(gclient_scm.os.path.join(base_path, 'b'))

    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    file_list = []
    scm.revert(options, self.args, file_list)

  def testRevertDirectory(self):
    options = self.Options(verbose=True)
    base_path = gclient_scm.os.path.join(self.root_dir, self.relpath)
    gclient_scm.os.path.isdir(base_path).AndReturn(True)
    items = [
      ('~      ', 'a'),
    ]
    gclient_scm.scm.SVN.CaptureStatus(base_path).AndReturn(items)
    file_path = gclient_scm.os.path.join(base_path, 'a')
    print(file_path)
    gclient_scm.os.path.exists(file_path).AndReturn(True)
    gclient_scm.os.path.isfile(file_path).AndReturn(False)
    gclient_scm.os.path.isdir(file_path).AndReturn(True)
    gclient_scm.gclient_utils.RemoveDirectory(file_path)
    file_list1 = []
    gclient_scm.scm.SVN.RunAndGetFileList(options,
                                          ['update', '--revision', 'BASE'],
                                          base_path, mox.IgnoreArg())

    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    file_list2 = []
    scm.revert(options, self.args, file_list2)

  def testStatus(self):
    options = self.Options(verbose=True)
    base_path = gclient_scm.os.path.join(self.root_dir, self.relpath)
    gclient_scm.os.path.isdir(base_path).AndReturn(True)
    gclient_scm.scm.SVN.RunAndGetFileList(options,
                                          ['status'] + self.args,
                                          base_path, []).AndReturn(None)

    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    file_list = []
    self.assertEqual(scm.status(options, self.args, file_list), None)


  # TODO(maruel):  TEST REVISIONS!!!
  # TODO(maruel):  TEST RELOCATE!!!
  def testUpdateCheckout(self):
    options = self.Options(verbose=True)
    base_path = gclient_scm.os.path.join(self.root_dir, self.relpath)
    file_info = gclient_scm.gclient_utils.PrintableObject()
    file_info.root = 'blah'
    file_info.url = self.url
    file_info.uuid = 'ABC'
    file_info.revision = 42
    gclient_scm.os.path.exists(gclient_scm.os.path.join(base_path, '.git')
                               ).AndReturn(False)
    # Checkout.
    gclient_scm.os.path.exists(base_path).AndReturn(False)
    files_list = self.mox.CreateMockAnything()
    gclient_scm.scm.SVN.RunAndGetFileList(options,
                                          ['checkout', self.url, base_path],
                                          self.root_dir, files_list)
    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    scm.update(options, (), files_list)

  def testUpdateUpdate(self):
    options = self.Options(verbose=True)
    base_path = gclient_scm.os.path.join(self.root_dir, self.relpath)
    options.force = True
    options.nohooks = False
    file_info = {
      'Repository Root': 'blah',
      'URL': self.url,
      'UUID': 'ABC',
      'Revision': 42,
    }
    gclient_scm.os.path.exists(gclient_scm.os.path.join(base_path, '.git')
                               ).AndReturn(False)
    # Checkout or update.
    gclient_scm.os.path.exists(base_path).AndReturn(True)
    gclient_scm.scm.SVN.CaptureInfo(
        gclient_scm.os.path.join(base_path, "."), '.'
        ).AndReturn(file_info)
    # Cheat a bit here.
    gclient_scm.scm.SVN.CaptureInfo(file_info['URL'], '.').AndReturn(file_info)
    additional_args = []
    if options.manually_grab_svn_rev:
      additional_args = ['--revision', str(file_info['Revision'])]
    files_list = []
    gclient_scm.scm.SVN.RunAndGetFileList(
        options,
        ['update', base_path] + additional_args,
        self.root_dir, files_list)

    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    scm.update(options, (), files_list)

  def testUpdateGit(self):
    options = self.Options(verbose=True)
    file_path = gclient_scm.os.path.join(self.root_dir, self.relpath, '.git')
    gclient_scm.os.path.exists(file_path).AndReturn(True)
    print("________ found .git directory; skipping %s" % self.relpath)

    self.mox.ReplayAll()
    scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                            relpath=self.relpath)
    file_list = []
    scm.update(options, self.args, file_list)


class GitWrapperTestCase(BaseTestCase):
  """This class doesn't use pymox."""
  class OptionsObject(object):
     def __init__(self, test_case, verbose=False, revision=None):
      self.verbose = verbose
      self.revision = revision
      self.manually_grab_svn_rev = True
      self.deps_os = None
      self.force = False
      self.nohooks = False

  sample_git_import = """blob
mark :1
data 6
Hello

blob
mark :2
data 4
Bye

reset refs/heads/master
commit refs/heads/master
mark :3
author Bob <bob@example.com> 1253744361 -0700
committer Bob <bob@example.com> 1253744361 -0700
data 8
A and B
M 100644 :1 a
M 100644 :2 b

blob
mark :4
data 10
Hello
You

blob
mark :5
data 8
Bye
You

commit refs/heads/origin
mark :6
author Alice <alice@example.com> 1253744424 -0700
committer Alice <alice@example.com> 1253744424 -0700
data 13
Personalized
from :3
M 100644 :4 a
M 100644 :5 b

reset refs/heads/master
from :3
"""
  def Options(self, *args, **kwargs):
    return self.OptionsObject(self, *args, **kwargs)

  def CreateGitRepo(self, git_import, path):
    """Do it for real."""
    try:
      Popen(['git', 'init'], stdout=PIPE, stderr=STDOUT,
            cwd=path).communicate()
    except OSError:
      # git is not available, skip this test.
      return False
    Popen(['git', 'fast-import'], stdin=PIPE, stdout=PIPE, stderr=STDOUT,
          cwd=path).communicate(input=git_import)
    Popen(['git', 'checkout'], stdout=PIPE, stderr=STDOUT,
          cwd=path).communicate()
    return True

  def setUp(self):
    self.args = self.Args()
    self.url = 'git://foo'
    self.root_dir = tempfile.mkdtemp()
    self.relpath = '.'
    self.base_path = gclient_scm.os.path.join(self.root_dir, self.relpath)
    self.enabled = self.CreateGitRepo(self.sample_git_import, self.base_path)
    SuperMoxBaseTestBase.setUp(self)

  def tearDown(self):
    SuperMoxBaseTestBase.tearDown(self)
    shutil.rmtree(self.root_dir)

  def testDir(self):
    members = [
        'COMMAND', 'Capture', 'CaptureStatus', 'FetchUpstreamTuple',
        'GenerateDiff', 'GetBranch', 'GetBranchRef', 'GetCheckoutRoot',
        'GetEmail', 'GetPatchName', 'GetSVNBranch',
        'GetUpstream', 'IsGitSvn', 'RunAndFilterOutput', 'ShortBranchName',
        'RunCommand', 'cleanup', 'diff', 'export', 'pack', 'relpath', 'revert',
        'revinfo', 'runhooks', 'scm_name', 'status', 'update', 'url',
    ]

    # If you add a member, be sure to add the relevant test!
    self.compareMembers(gclient_scm.CreateSCM(url=self.url), members)

  def testRevertMissing(self):
    if not self.enabled:
      return
    options = self.Options()
    file_path = gclient_scm.os.path.join(self.base_path, 'a')
    gclient_scm.os.remove(file_path)
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    file_list = []
    scm.revert(options, self.args, file_list)
    self.assertEquals(file_list, [file_path])
    file_list = []
    scm.diff(options, self.args, file_list)
    self.assertEquals(file_list, [])

  def testRevertNone(self):
    if not self.enabled:
      return
    options = self.Options()
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    file_list = []
    scm.revert(options, self.args, file_list)
    self.assertEquals(file_list, [])
    self.assertEquals(scm.revinfo(options, self.args, None),
                      '069c602044c5388d2d15c3f875b057c852003458')


  def testRevertModified(self):
    if not self.enabled:
      return
    options = self.Options()
    file_path = gclient_scm.os.path.join(self.base_path, 'a')
    open(file_path, 'a').writelines('touched\n')
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    file_list = []
    scm.revert(options, self.args, file_list)
    self.assertEquals(file_list, [file_path])
    file_list = []
    scm.diff(options, self.args, file_list)
    self.assertEquals(file_list, [])
    self.assertEquals(scm.revinfo(options, self.args, None),
                      '069c602044c5388d2d15c3f875b057c852003458')

  def testRevertNew(self):
    if not self.enabled:
      return
    options = self.Options()
    file_path = gclient_scm.os.path.join(self.base_path, 'c')
    f = open(file_path, 'w')
    f.writelines('new\n')
    f.close()
    Popen(['git', 'add', 'c'], stdout=PIPE,
          stderr=STDOUT, cwd=self.base_path).communicate()
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    file_list = []
    scm.revert(options, self.args, file_list)
    self.assertEquals(file_list, [file_path])
    file_list = []
    scm.diff(options, self.args, file_list)
    self.assertEquals(file_list, [])
    self.assertEquals(scm.revinfo(options, self.args, None),
                      '069c602044c5388d2d15c3f875b057c852003458')

  def testStatusNew(self):
    if not self.enabled:
      return
    options = self.Options()
    file_path = gclient_scm.os.path.join(self.base_path, 'a')
    open(file_path, 'a').writelines('touched\n')
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    file_list = []
    scm.status(options, self.args, file_list)
    self.assertEquals(file_list, [file_path])

  def testStatus2New(self):
    if not self.enabled:
      return
    options = self.Options()
    expected_file_list = []
    for f in ['a', 'b']:
        file_path = gclient_scm.os.path.join(self.base_path, f)
        open(file_path, 'a').writelines('touched\n')
        expected_file_list.extend([file_path])
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    file_list = []
    scm.status(options, self.args, file_list)
    expected_file_list = [gclient_scm.os.path.join(self.base_path, x)
                          for x in ['a', 'b']]
    self.assertEquals(sorted(file_list), expected_file_list)

  def testUpdateCheckout(self):
    if not self.enabled:
      return
    options = self.Options(verbose=True)
    root_dir = tempfile.mkdtemp()
    relpath = 'foo'
    base_path = gclient_scm.os.path.join(root_dir, relpath)
    url = gclient_scm.os.path.join(self.root_dir, self.relpath, '.git')
    try:
      scm = gclient_scm.CreateSCM(url=url, root_dir=root_dir,
                                  relpath=relpath)
      file_list = []
      scm.update(options, (), file_list)
      self.assertEquals(len(file_list), 2)
      self.assert_(gclient_scm.os.path.isfile(
          gclient_scm.os.path.join(base_path, 'a')))
      self.assertEquals(scm.revinfo(options, (), None),
                        '069c602044c5388d2d15c3f875b057c852003458')
    finally:
      shutil.rmtree(root_dir)

  def testUpdateUpdate(self):
    if not self.enabled:
      return
    options = self.Options()
    expected_file_list = [gclient_scm.os.path.join(self.base_path, x)
                          for x in ['a', 'b']]
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    file_list = []
    scm.update(options, (), file_list)
    self.assertEquals(file_list, expected_file_list)
    self.assertEquals(scm.revinfo(options, (), None),
                      'a7142dc9f0009350b96a11f372b6ea658592aa95')

  def testUpdateConflict(self):
    if not self.enabled:
      return
    options = self.Options()
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    file_path = gclient_scm.os.path.join(self.base_path, 'b')
    f = open(file_path, 'w').writelines('conflict\n')
    scm._Run(['commit', '-am', 'test'])
    exception = \
        '\n____ .\n' \
        '\nConflict while rebasing this branch.\n' \
        'Fix the conflict and run gclient again.\n' \
        'See man git-rebase for details.\n'
    self.assertRaisesError(exception, scm.update, options, (), [])
    exception = \
        '\n____ .\n' \
        '\tAlready in a conflict, i.e. (no branch).\n' \
        '\tFix the conflict and run gclient again.\n' \
        '\tOr to abort run:\n\t\tgit-rebase --abort\n' \
        '\tSee man git-rebase for details.\n'
    self.assertRaisesError(exception, scm.update, options, (), [])

  def testRevinfo(self):
    if not self.enabled:
      return
    options = self.Options()
    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
                                relpath=self.relpath)
    rev_info = scm.revinfo(options, (), None)
    self.assertEquals(rev_info, '069c602044c5388d2d15c3f875b057c852003458')


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

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