add pull request API

there are a few little issues remaining.  Mostly regarding handling
meaningful non-20x response codes

2 files changed, 105 insertions, 0 deletions

diff --git a/pygithub3/requests/pull_requests/__init__.py b/pygithub3/requests/pull_requests/__init__.py
new file mode 100644
index 0000000..7e85f8f
--- /dev/null
+++ b/pygithub3/requests/pull_requests/__init__.py
@@ -0,0 +1,62 @@
+from pygithub3.requests.base import Request, ValidationError
+from pygithub3.resources.base import Raw
+from pygithub3.resources.pull_requests import PullRequest, File
+from pygithub3.resources.repos import Commit
+
+
+class List(Request):
+    uri = 'repos/{user}/{repo}/pulls'
+    resource = PullRequest
+
+
+class Get(Request):
+    uri = 'repos/{user}/{repo}/pulls/{number}'
+    resource = PullRequest
+
+
+class Create(Request):
+    uri = 'repos/{user}/{repo}/pulls'
+    resource = PullRequest
+    body_schema = {
+        'schema': ('title', 'body', 'base', 'head', 'issue'),
+        'required': ('base', 'head'),
+    }
+
+    def validate_body(self, parsed):
+        if (not ('title' in parsed and 'body' in parsed) and
+            not 'issue' in parsed):
+            raise ValidationError('pull request creation requires either an '
+                                  'issue number or a title and body')
+
+class Update(Request):
+    uri = 'repos/{user}/{repo}/pulls/{number}'
+    resource = PullRequest
+    body_schema = {
+        'schema': ('title', 'body', 'state'),
+        'required': (),
+    }
+
+    def validate_body(self, body):
+        if 'state' in body and body['state'] not in ['open', 'closed']:
+            raise ValidationError('If a state is specified, it must be one '
+                                  'of "open" or "closed"')
+
+
+class List_commits(Request):
+    uri = 'repos/{user}/{repo}/pulls/{number}/commits'
+    resource = Commit
+
+
+class List_files(Request):
+    uri = 'repos/{user}/{repo}/pulls/{number}/files'
+    resource = File
+
+
+class Merge_status(Request):
+    uri = 'repos/{user}/{repo}/pulls/{number}/merge'
+    resource = Raw
+
+
+class Merge(Request):
+    uri = 'repos/{user}/{repo}/pulls/{number}/merge'
+    resource = Raw
diff --git a/pygithub3/requests/pull_requests/comments.py b/pygithub3/requests/pull_requests/comments.py
new file mode 100644
index 0000000..fa1e5b6
--- /dev/null
+++ b/pygithub3/requests/pull_requests/comments.py
@@ -0,0 +1,43 @@
+from pygithub3.requests.base import Request
+from pygithub3.resources.pull_requests import Comment
+
+
+class List(Request):
+    uri = 'repos/{user}/{repo}/pulls/{number}/comments'
+    resource = Comment
+
+
+class Get(Request):
+    uri = 'repos/{user}/{repo}/pulls/comments/{number}'
+    resource = Comment
+
+
+class Create(Request):
+    uri = 'repos/{user}/{repo}/pulls/{number}/comments'
+    resource = Comment
+    body_schema = {
+        'schema': ('body', 'commit_id', 'path', 'position', 'in_reply_to'),
+        'required': ('body',),
+    }
+
+    def validate_body(self, body):
+        if (not ('commit_id' in body and
+                 'path' in body and
+                 'position' in body) and
+            not 'in_reply_to' in body):
+            raise ValidationError('supply either in_reply_to or commit_id, '
+                                  'path, and position')
+
+
+class Edit(Request):
+    uri = 'repos/{user}/{repo}/pulls/comments/{number}'
+    resource = Comment
+    body_schema = {
+        'schema': ('body',),
+        'required': ('body',),
+    }
+
+
+class Delete(Request):
+    uri = 'repos/{user}/{repo}/pulls/comments/{number}'
+    resource = Comment