Raise RepositoryError for bzr and hg

Author: stsewd

readthedocs/vcs_support/backends/bzr.py

@@ -93,4 +93,9 @@ def checkout(self, identifier=None):
         super(Backend, self).checkout()
         if not identifier:
             return self.up()
-        return self.run('bzr', 'switch', identifier)
+        exit_code, stdout, stderr = self.run('bzr', 'switch', identifier)
+        if exit_code != 0:
+            raise RepositoryError(
+                RepositoryError.FAILED_TO_CHECKOUT.format(identifier)
+            )
+        return exit_code, stdout, stderr

readthedocs/vcs_support/backends/hg.py

@@ -110,4 +110,11 @@ def checkout(self, identifier=None):
         super(Backend, self).checkout()
         if not identifier:
             identifier = 'tip'
-        return self.run('hg', 'update', '--clean', identifier)
+        exit_code, stdout, stderr = self.run(
+            'hg', 'update', '--clean', identifier
+        )
+        if exit_code != 0:
+            raise RepositoryError(
+                RepositoryError.FAILED_TO_CHECKOUT.format(identifier)
+            )
+        return exit_code, stdout, stderr