Add pactest requiredby004.

Upgrade a package that no longer needs a depend.
Reference:
http://www.archlinux.org/pipermail/pacman-dev/2007-June/008503.html

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

pactest/tests/requiredby004.py

@@ -0,0 +1,20 @@
+self.description = "Upgrade a package that no longer needs a depend"
+
+lp1 = pmpkg("pkg1")
+lp1.depends = ["pkg2"]
+self.addpkg2db("local", lp1)
+
+lp2 = pmpkg("pkg2")
+lp2.requiredby = ["pkg1"]
+self.addpkg2db("local", lp2)
+
+p = pmpkg("pkg1", "1.1-1")
+self.addpkg(p)
+
+self.args = "-U %s" % p.filename()
+
+self.addrule("PACMAN_RETCODE=0")
+self.addrule("PKG_EXIST=pkg1")
+self.addrule("PKG_VERSION=pkg1|1.1-1")
+self.addrule("PKG_EXIST=pkg2")
+self.addrule("!PKG_REQUIREDBY=pkg2|pkg1")