tests: pass "rev" argument to commands.update() as string
commands.update() normally gets its "rev" argument as a string, but
test-basic.t was passing an integer. That happened to work, but we
shouldn't rely on it.
Differential Revision: https://phab.mercurial-scm.org/D3851
--- a/tests/test-basic.t Wed Jun 27 23:39:41 2018 +0900
+++ b/tests/test-basic.t Wed Jun 27 07:19:30 2018 -0700
@@ -64,7 +64,7 @@
> from mercurial import ui, hg, commands
> myui = ui.ui.load()
> repo = hg.repository(myui, path=b'.')
- > commands.update(myui, repo, rev=0)
+ > commands.update(myui, repo, rev=b"0")
> EOF
$ hg up null
0 files updated, 0 files merged, 1 files removed, 0 files unresolved