# HG changeset patch
# User FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
# Date 1436342469 -32400
# Node ID a4a41525180c9236ff1fc4f7f766f4e30561131d
# Parent  72d395e399c162ada601f994c5631ab81b80f8e3
tests: add extension to emulate invoking internalpatch at the specific time

This extension fakes "mtime" of patched files to emulate invoking
'patch.internalpatch()' at the specific time.

This is useful to reproduce timing critical issues fixed in subsequent
patches.

diff -r 72d395e399c1 -r a4a41525180c tests/fakepatchtime.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/fakepatchtime.py	Wed Jul 08 17:01:09 2015 +0900
@@ -0,0 +1,26 @@
+# extension to emulate invoking 'patch.internalpatch()' at the time
+# specified by '[fakepatchtime] fakenow'
+
+from mercurial import extensions, patch as patchmod, util
+
+def internalpatch(orig, ui, repo, patchobj, strip,
+                  prefix='', files=None,
+                  eolmode='strict', similarity=0):
+    if files is None:
+        files = set()
+    r = orig(ui, repo, patchobj, strip,
+             prefix=prefix, files=files,
+             eolmode=eolmode, similarity=similarity)
+
+    fakenow = ui.config('fakepatchtime', 'fakenow')
+    if fakenow:
+        # parsing 'fakenow' in YYYYmmddHHMM format makes comparison between
+        # 'fakenow' value and 'touch -t YYYYmmddHHMM' argument easy
+        fakenow = util.parsedate(fakenow, ['%Y%m%d%H%M'])[0]
+        for f in files:
+            repo.wvfs.utime(f, (fakenow, fakenow))
+
+    return r
+
+def extsetup(ui):
+    extensions.wrapfunction(patchmod, 'internalpatch', internalpatch)