--- a/tests/test-basic.t Tue Mar 08 14:55:31 2011 -0600
+++ b/tests/test-basic.t Tue Mar 08 08:41:39 2011 -0500
@@ -20,6 +20,22 @@
summary: test
+Verify that updating to revision 0 via commands.update() works properly
+
+ $ cat <<EOF > update_to_rev0.py
+ > from mercurial import ui, hg, commands
+ > myui = ui.ui()
+ > repo = hg.repository(myui, path='.')
+ > commands.update(myui, repo, rev=0)
+ > EOF
+ $ hg up null
+ 0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+ $ python ./update_to_rev0.py
+ 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+ $ hg identify -n
+ 0
+
+
Poke around at hashes:
$ hg manifest --debug