[PATCH evolve-ext] evolve: add a test for prune --keep -r . with active bookmark

[Laurent Charignon]

# HG changeset patch
# User Laurent Charignon <lcharignon at fb.com>
# Date 1432153952 25200
#      Wed May 20 13:32:32 2015 -0700
# Node ID 911646336445f5d84d77317656005abd7c991c45
# Parent  376d3df9f47bbc704b1bebb31ebeb31c6fe63192
evolve: add a test for prune --keep -r . with active bookmark

We recently changed the behavior of prune to make sure that the active
bookmark stays active after prune -r .
This patch adds a test for the case of prune --keep -r . that does not
take the same code path.

diff --git a/tests/test-prune.t b/tests/test-prune.t
--- a/tests/test-prune.t
+++ b/tests/test-prune.t
@@ -361,3 +361,12 @@
   |/
   o  0:1ea73414a91b[] (stable/draft) r0
   
+  $ hg book CELESTE
+  $ hg prune -r . --keep
+  1 changesets pruned
+  $ hg book
+     B                         8:d62d843c9a01
+   * CELESTE                   8:d62d843c9a01
+     r10                       8:d62d843c9a01
+     rg                        8:d62d843c9a01
+