* By Roman's request - proactive backup=() entry test case

pactest/tests/upgrade023.py

@@ -0,0 +1,17 @@
+self.description = "Upgrade a package, with a backup file in the NEW package only"
+
+lp = pmpkg("dummy")
+lp.files = ["etc/dummy.conf*"]
+self.addpkg2db("local", lp)
+
+p = pmpkg("dummy", "1.1-1")
+p.files = ["etc/dummy.conf"]
+p.backup = ["etc/dummy.conf"]
+self.addpkg(p)
+
+self.args = "-U %s" % p.filename()
+
+self.addrule("PKG_VERSION=dummy|1.1-1")
+self.addrule("!FILE_MODIFIED=etc/dummy.conf")
+# Do we want this pacnew or not?
+self.addrule("FILE_PACNEW=etc/dummy.conf")