Added Issue.as_pull_request() and PullReqest.as_issue() (#630)

github/Issue.py

@@ -242,6 +242,17 @@ class Issue(github.GithubObject.CompletableGithubObject):
         self._completeIfNotSet(self._user)
         return self._user.value
 
+    def as_pull_request(self):
+        """
+        :calls: `GET /repos/:owner/:repo/pulls/:number <http://developer.github.com/v3/pulls>`_
+        :rtype: :class:`github.PullRequest.PullRequest`
+        """
+        headers, data = self._requester.requestJsonAndCheck(
+            "GET",
+            "/pulls/".join(self.url.rsplit("/issues/", 1))
+        )
+        return github.PullRequest.PullRequest(self._requester, headers, data, completed=True)
+
     def add_to_assignees(self, *assignees):
         """
         :calls: `POST /repos/:owner/:repo/issues/:number/assignees <https://developer.github.com/v3/issues/assignees>`_

github/PullRequest.py

@@ -338,6 +338,17 @@ class PullRequest(github.GithubObject.CompletableGithubObject):
         self._completeIfNotSet(self._user)
         return self._user.value
 
+    def as_issue(self):
+        """
+        :calls: `GET /repos/:owner/:repo/issues/:number <http://developer.github.com/v3/issues>`_
+        :rtype: :class:`github.Issue.Issue`
+        """
+        headers, data = self._requester.requestJsonAndCheck(
+            "GET",
+            "/issues/".join(self.url.rsplit("/pulls/", 1))
+        )
+        return github.Issue.Issue(self._requester, headers, data, completed=True)
+
     def create_comment(self, body, commit_id, path, position):
         """
         :calls: `POST /repos/:owner/:repo/pulls/:number/comments <http://developer.github.com/v3/pulls/comments>`_

github/tests/AllTests.py

@@ -109,3 +109,4 @@ from Issue214 import *
 from Issue216 import *
 from Issue278 import *
 from Issue494 import *
+from Issue572 import *

github/tests/Issue572.py

@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+
+# ########################## Copyrights and license ############################
+#                                                                              #
+# Copyright 2012 Vincent Jacques <vincent@vincent-jacques.net>                 #
+# Copyright 2012 Zearin <zearin@gonk.net>                                      #
+# Copyright 2013 Stuart Glaser <stuglaser@gmail.com>                           #
+# Copyright 2013 Vincent Jacques <vincent@vincent-jacques.net>                 #
+#                                                                              #
+# This file is part of PyGithub.                                               #
+# http://pygithub.github.io/PyGithub/v1/index.html                             #
+#                                                                              #
+# PyGithub is free software: you can redistribute it and/or modify it under    #
+# the terms of the GNU Lesser General Public License as published by the Free  #
+# Software Foundation, either version 3 of the License, or (at your option)    #
+# any later version.                                                           #
+#                                                                              #
+# PyGithub is distributed in the hope that it will be useful, but WITHOUT ANY  #
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS    #
+# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more #
+# details.                                                                     #
+#                                                                              #
+# You should have received a copy of the GNU Lesser General Public License     #
+# along with PyGithub. If not, see <http://www.gnu.org/licenses/>.             #
+#                                                                              #
+# ##############################################################################
+
+import Framework
+
+import github
+
+class Issue572(Framework.TestCase):
+    def setUp(self):
+        Framework.TestCase.setUp(self)
+        self.repo = self.g.get_user().get_repo("PyGithub")
+
+    def testIssueAsPullRequest(self):
+        issue = self.repo.get_issue(2)
+        pull = issue.as_pull_request()
+        self.assertEqual(issue.html_url, pull.html_url)
+        self.assertTrue(isinstance(pull, github.PullRequest.PullRequest))
+
+    def testPullReqeustAsIssue(self):
+        pull = self.repo.get_pull(2)
+        issue = pull.as_issue()
+        self.assertEqual(pull.html_url, issue.html_url)
+        self.assertTrue(isinstance(issue, github.Issue.Issue))