# Copyright (C) 2010 Google Inc. All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are

# met:

#

#    * Redistributions of source code must retain the above copyright

# notice, this list of conditions and the following disclaimer.

#    * Redistributions in binary form must reproduce the above

# copyright notice, this list of conditions and the following disclaimer

# in the documentation and/or other materials provided with the

# distribution.

#    * Neither the name of Google Inc. nor the names of its

# contributors may be used to endorse or promote products derived from

# this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

from __future__ import with_statement

import codecs

import os

import shutil

import tempfile

import unittest

from webkitpy.common.checkout.api import Checkout

from webkitpy.common.checkout.changelog import ChangeLogEntry

from webkitpy.common.checkout.scm import detect_scm_system, CommitMessage

from webkitpy.common.system.outputcapture import OutputCapture

from webkitpy.thirdparty.mock import Mock

# FIXME: Copied from scm_unittest.py

def write_into_file_at_path(file_path, contents, encoding="utf-8"):

    with codecs.open(file_path, "w", encoding) as file:

        file.write(contents)

_changelog1entry1 = u"""2010-03-25  Tor Arne Vestb\u00f8  <vestbo@webkit.org>

        Unreviewed build fix to un-break webkit-patch land.

        Move commit_message_for_this_commit from scm to checkout

        https://bugs.webkit.org/show_bug.cgi?id=36629

        * Scripts/webkitpy/common/checkout/api.py: import scm.CommitMessage

"""

_changelog1entry2 = u"""2010-03-25  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Move commit_message_for_this_commit from scm to checkout

        https://bugs.webkit.org/show_bug.cgi?id=36629

        * Scripts/webkitpy/common/checkout/api.py:

"""

_changelog1 = u"\n".join([_changelog1entry1, _changelog1entry2])

_changelog2 = u"""2010-03-25  Tor Arne Vestb\u00f8  <vestbo@webkit.org>

        Unreviewed build fix to un-break webkit-patch land.

        Second part of this complicated change.

        * Path/To/Complicated/File: Added.

2010-03-25  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Filler change.

"""

class CommitMessageForThisCommitTest(unittest.TestCase):

    expected_commit_message = u"""2010-03-25  Tor Arne Vestb\u00f8  <vestbo@webkit.org>

        Unreviewed build fix to un-break webkit-patch land.

        Move commit_message_for_this_commit from scm to checkout

        https://bugs.webkit.org/show_bug.cgi?id=36629

        * Scripts/webkitpy/common/checkout/api.py: import scm.CommitMessage

2010-03-25  Tor Arne Vestb\u00f8  <vestbo@webkit.org>

        Unreviewed build fix to un-break webkit-patch land.

        Second part of this complicated change.

        * Path/To/Complicated/File: Added.

"""

    def setUp(self):

        self.temp_dir = tempfile.mkdtemp(suffix="changelogs")

        self.old_cwd = os.getcwd()

        os.chdir(self.temp_dir)

        write_into_file_at_path("ChangeLog1", _changelog1)

        write_into_file_at_path("ChangeLog2", _changelog2)

    def tearDown(self):

        shutil.rmtree(self.temp_dir, ignore_errors=True)

        os.chdir(self.old_cwd)

    # FIXME: This should not need to touch the file system, however

    # ChangeLog is difficult to mock at current.

    def test_commit_message_for_this_commit(self):

        checkout = Checkout(None)

        checkout.modified_changelogs = lambda git_commit: ["ChangeLog1", "ChangeLog2"]

        output = OutputCapture()

        expected_stderr = "Parsing ChangeLog: ChangeLog1\nParsing ChangeLog: ChangeLog2\n"

        commit_message = output.assert_outputs(self, checkout.commit_message_for_this_commit,

            kwargs={"git_commit": None}, expected_stderr=expected_stderr)

        self.assertEqual(commit_message.message(), self.expected_commit_message)

class CheckoutTest(unittest.TestCase):

    def test_latest_entry_for_changelog_at_revision(self):

        scm = Mock()

        def mock_contents_at_revision(changelog_path, revision):

            self.assertEqual(changelog_path, "foo")

            self.assertEqual(revision, "bar")

            # contents_at_revision is expected to return a byte array (str)

            # so we encode our unicode ChangeLog down to a utf-8 stream.

            return _changelog1.encode("utf-8")

        scm.contents_at_revision = mock_contents_at_revision

        checkout = Checkout(scm)

        entry = checkout._latest_entry_for_changelog_at_revision("foo", "bar")

        self.assertEqual(entry.contents(), _changelog1entry1)

    def test_commit_info_for_revision(self):

        scm = Mock()

        scm.committer_email_for_revision = lambda revision: "committer@example.com"

        checkout = Checkout(scm)

        checkout.changelog_entries_for_revision = lambda revision: [ChangeLogEntry(_changelog1entry1)]

        commitinfo = checkout.commit_info_for_revision(4)

        self.assertEqual(commitinfo.bug_id(), 36629)

        self.assertEqual(commitinfo.author_name(), u"Tor Arne Vestb\u00f8")

        self.assertEqual(commitinfo.author_email(), "vestbo@webkit.org")

        self.assertEqual(commitinfo.reviewer_text(), None)

        self.assertEqual(commitinfo.reviewer(), None)

        self.assertEqual(commitinfo.committer_email(), "committer@example.com")

        self.assertEqual(commitinfo.committer(), None)

        checkout.changelog_entries_for_revision = lambda revision: []

        self.assertEqual(checkout.commit_info_for_revision(1), None)

    def test_bug_id_for_revision(self):

        scm = Mock()

        scm.committer_email_for_revision = lambda revision: "committer@example.com"

        checkout = Checkout(scm)

        checkout.changelog_entries_for_revision = lambda revision: [ChangeLogEntry(_changelog1entry1)]

        self.assertEqual(checkout.bug_id_for_revision(4), 36629)

    def test_bug_id_for_this_commit(self):

        scm = Mock()

        checkout = Checkout(scm)

        checkout.commit_message_for_this_commit = lambda git_commit: CommitMessage(ChangeLogEntry(_changelog1entry1).contents().splitlines())

        self.assertEqual(checkout.bug_id_for_this_commit(git_commit=None), 36629)

    def test_modified_changelogs(self):

        scm = Mock()

        scm.checkout_root = "/foo/bar"

        scm.changed_files = lambda git_commit: ["file1", "ChangeLog", "relative/path/ChangeLog"]

        checkout = Checkout(scm)

        expected_changlogs = ["/foo/bar/ChangeLog", "/foo/bar/relative/path/ChangeLog"]

        self.assertEqual(checkout.modified_changelogs(git_commit=None), expected_changlogs)