Merge lp:~cjwatson/launchpad/git-export-getRefByPath into lp:launchpad

[Colin Watson]

Export IGitRepository.getRefByPath.

[William Grant (wgrant)]

review: Approve (code)

=== modified file 'lib/lp/_schema_circular_imports.py'
--- lib/lp/_schema_circular_imports.py	2016-12-02 13:01:53 +0000
+++ lib/lp/_schema_circular_imports.py	2017-01-09 18:44:27 +0000
@@ -1,4 +1,4 @@
-# Copyright 2009-2016 Canonical Ltd.  This software is licensed under the
+# Copyright 2009-2017 Canonical Ltd.  This software is licensed under the
 # GNU Affero General Public License version 3 (see the file LICENSE).
 
 """Update the interface schema values due to circular imports.
@@ -512,6 +512,7 @@
 patch_entry_return_type(IGitRepository, 'subscribe', IGitSubscription)
 patch_entry_return_type(IGitRepository, 'getSubscription', IGitSubscription)
 patch_reference_property(IGitRepository, 'code_import', ICodeImport)
+patch_entry_return_type(IGitRepository, 'getRefByPath', IGitRef)
 patch_collection_property(
     IGitRepository, '_api_landing_targets', IBranchMergeProposal)
 patch_collection_property(

=== modified file 'lib/lp/code/interfaces/gitrepository.py'
--- lib/lp/code/interfaces/gitrepository.py	2016-11-11 14:57:42 +0000
+++ lib/lp/code/interfaces/gitrepository.py	2017-01-09 18:44:27 +0000
@@ -1,4 +1,4 @@
-# Copyright 2015-2016 Canonical Ltd.  This software is licensed under the
+# Copyright 2015-2017 Canonical Ltd.  This software is licensed under the
 # GNU Affero General Public License version 3 (see the file LICENSE).
 
 """Git repository interfaces."""
@@ -265,6 +265,12 @@
         # Really ICodeImport, patched in _schema_circular_imports.py.
         schema=Interface))
 
+    @operation_parameters(
+        path=TextLine(title=_("A string to look up as a path.")))
+    # Really IGitRef, patched in _schema_circular_imports.py.
+    @operation_returns_entry(Interface)
+    @export_read_operation()
+    @operation_for_version("devel")
     def getRefByPath(path):
         """Look up a single reference in this repository by path.
 

=== modified file 'lib/lp/code/model/tests/test_gitrepository.py'
--- lib/lp/code/model/tests/test_gitrepository.py	2016-11-11 14:57:42 +0000
+++ lib/lp/code/model/tests/test_gitrepository.py	2017-01-09 18:44:27 +0000
@@ -1,4 +1,4 @@
-# Copyright 2015-2016 Canonical Ltd.  This software is licensed under the
+# Copyright 2015-2017 Canonical Ltd.  This software is licensed under the
 # GNU Affero General Public License version 3 (see the file LICENSE).
 
 """Tests for Git repositories."""
@@ -2682,6 +2682,32 @@
         with person_logged_in(ANONYMOUS):
             self.assertEqual(owner_db, repository_db.owner)
 
+    def test_getRefByPath(self):
+        repository_db = self.factory.makeGitRepository()
+        ref_dbs = self.factory.makeGitRefs(
+            repository=repository_db, paths=[u"refs/heads/a", u"refs/heads/b"])
+        repository_url = api_url(repository_db)
+        ref_urls = [api_url(ref_db) for ref_db in ref_dbs]
+        webservice = webservice_for_person(
+            repository_db.owner, permission=OAuthPermission.READ_PUBLIC)
+        webservice.default_api_version = "devel"
+        for path, expected_ref_url in (
+                ("a", ref_urls[0]),
+                ("refs/heads/a", ref_urls[0]),
+                ("b", ref_urls[1]),
+                ("refs/heads/b", ref_urls[1]),
+                ):
+            response = webservice.named_get(
+                repository_url, "getRefByPath", path=path)
+            self.assertEqual(200, response.status)
+            self.assertEqual(
+                webservice.getAbsoluteUrl(expected_ref_url),
+                response.jsonBody()["self_link"])
+        response = webservice.named_get(
+            repository_url, "getRefByPath", path="c")
+        self.assertEqual(200, response.status)
+        self.assertIsNone(response.jsonBody())
+
     def test_subscribe(self):
         # A user can subscribe to a repository.
         repository_db = self.factory.makeGitRepository()