autotest/tp-libvirt — pull request #390 by PandaWei (2014-12-10 08:58:09+00:00)
Title: avoid risk caused by using count() check user-define-value.

In some scripts,
we use count() to check if the value of self-variable,
needed by special circumstances, has been set or not.
But, it will bring some problem. for example,

The self-variable declared at the corresponding config file.

iface_name = "ENTER.BRIDGE.NAME"

If the user just delete the prompt message and keep it "none".
the following code will regard 'none' as a valid value without
any error.

iface_name = params.get("iface_name")
if iface_name.count("ENTER"):
raise error.TestNAError("Please input a existing bridge/ethernet name")

This patch fixes the problem.