tests/hghave.py

--- a/tests/hghave.py	Mon Aug 22 19:50:21 2016 -0700
+++ b/tests/hghave.py	Thu Aug 25 22:51:39 2016 +0000
@@ -110,6 +110,10 @@
 def has_bzr():
     try:
         import bzrlib
+        import bzrlib.bzrdir
+        import bzrlib.errors
+        import bzrlib.revision
+        import bzrlib.revisionspec.RevisionSpec
         return bzrlib.__doc__ is not None
     except ImportError:
         return False