Add two new pactests for pacman upgrade behavior

Both currently marked as failing.

* sync303.py encapsulates the broken behavior reported in FS#27214.
* sync304.py shows how packages depending on a specific version of a
  package in SyncFirst can cause breakage of the dependency resolver.

Signed-off-by: Dan McGee <dan@archlinux.org>

test/pacman/tests/sync303.py

@@ -0,0 +1,38 @@
+self.description = "Sysupgrade: upgrade pacman with deps as provisions"
+
+sp = pmpkg("pacman", "1.0-2")
+sp.depends = ["zlib"]
+self.addpkg2db("sync", sp)
+
+glibcdep = pmpkg("glibc", "2.13-1")
+self.addpkg2db("sync", glibcdep)
+
+zlibdep = pmpkg("zlib", "1.2.5-3")
+zlibdep.depends = ["glibc"]
+self.addpkg2db("sync", zlibdep)
+
+
+lp = pmpkg("pacman", "1.0-1")
+lp.depends = ["zlib"]
+self.addpkg2db("local", lp)
+
+lp2 = pmpkg("glibc-awesome", "2.13-2")
+lp2.provides = ["glibc=2.13"]
+lp2.conflicts = ["glibc"]
+self.addpkg2db("local", lp2)
+
+lp3 = pmpkg("zlib", "1.2.5-3")
+self.addpkg2db("local", lp3)
+
+self.option["SyncFirst"] = ["pacman"]
+
+self.args = "-Su"
+
+self.addrule("PACMAN_RETCODE=0")
+self.addrule("PKG_EXIST=pacman")
+self.addrule("PKG_VERSION=pacman|1.0-2")
+self.addrule("PKG_EXIST=glibc-awesome")
+self.addrule("PKG_VERSION=glibc-awesome|2.13-2")
+self.addrule("PKG_EXIST=zlib")
+
+self.expectfailure = True

test/pacman/tests/sync304.py

@@ -0,0 +1,27 @@
+self.description = "Sysupgrade: upgrade pacman being depended on"
+
+sp = pmpkg("pacman", "4.0.1-1")
+self.addpkg2db("sync", sp)
+
+sp2 = pmpkg("pyalpm", "2-1")
+sp2.depends = ["pacman>=4.0", "pacman<4.1"]
+self.addpkg2db("sync", sp2)
+
+lp = pmpkg("pacman", "3.5.4-1")
+self.addpkg2db("local", lp)
+
+lp2 = pmpkg("pyalpm", "1-1")
+lp2.depends = ["pacman>=3.5", "pacman<3.6"]
+self.addpkg2db("local", lp2)
+
+self.option["SyncFirst"] = ["pacman"]
+
+self.args = "-Su"
+
+self.addrule("PACMAN_RETCODE=0")
+self.addrule("PKG_EXIST=pacman")
+self.addrule("PKG_VERSION=pacman|4.0.1-1")
+self.addrule("PKG_EXIST=pyalpm")
+self.addrule("PKG_VERSION=pyalpm|2-1")
+
+self.expectfailure = True