[PATCH 2 of 2] tests: use require() instead of hghave in test-filecache.py

[Gregory Szorc]

# HG changeset patch
# User Gregory Szorc <gregory.szorc at gmail.com>
# Date 1457916457 25200
#      Sun Mar 13 17:47:37 2016 -0700
# Node ID 98268939a6729a66814abf83b2271dafb48f609f
# Parent  7e524606e308bf43eb3e1385ed8f03fa42b6b67a
tests: use require() instead of hghave in test-filecache.py

This is much simpler, isn't it?

diff --git a/tests/test-filecache.py b/tests/test-filecache.py
--- a/tests/test-filecache.py
+++ b/tests/test-filecache.py
@@ -1,14 +1,11 @@
-import sys, os, subprocess
+require(['cacheable'])
 
-if subprocess.call(['python', '%s/hghave' % os.environ['TESTDIR'],
-                    'cacheable']):
-    sys.exit(80)
-
+import os
 from mercurial import util, scmutil, extensions, hg, ui
 
 filecache = scmutil.filecache
 
 class fakerepo(object):
     def __init__(self):
         self._filecache = {}