Hi,
Sorry, I just read the last part of your post about testing.
I can only draw forom what i know of australian testing methods which are fairly strict (as they should be) to maintain a high level of safety for the user.
The inspector will check visually every outlet point in the house. They will check them for cracks, if they are loose on the wall etc. The same goes for light switches etc.
To check cabling inside cavities, the inspector uses an instrument called a 'high voltage insulation resistance tester' to check that the insulation resistance of the current carrying cables is ok. The cable are subjetc to a high DC voltage and a reading (in Meg Ohms) is obtained. Basically this means that if there is a defect in the insulation of a cable that could cause a problem, then he will probable detect it. This is not a foolproof test and as such should not be considered the be all and end all of fault finding.
A main earth resistance reading is taken. IN Australia, the main earth must not exceed 0.5 ohms.
The inspector probably will (and should) conductact and earth loop impedance test as well.
The equipotential bond of the earth must be cheched and rechecked.
The installing electrician should perform these checks and is required to do so by Australian Law.
If you had any trouble grasping the testin proceedures outlined above, then you must not perform the work. I don't know where you are, but I am willing to bet that it is against the law to perform any work on fixed wiring without an electrical licesense.
DO NOT PERFOM ANY ELECTRICAL WORK UNLESS YOU ARE COMPETENT TO DO SO
I know you are not qualified or you wouldn't be asking these questions.
I take absoultely no responsibility if this information is not applicable to your area and/or you get injured as a result of being misinformed.