Tests that the NetworkAgent is able to get a serialized certificate for a given request.


== Running test suite: Network.getSerializedCertificate
-- Running test case: Network.getSerializedCertificate.HTTP
PASS: Should produce an exception.
Error: Missing certificate of resource for given requestId

-- Running test case: Network.getSerializedCertificate.HTTPS
PASS: Request should have serializable certificate.

-- Running test case: Network.getSerializedCertificate.Invalid
PASS: Should produce an exception.
Error: Missing resource for given requestId