Lots of mushrooms grow wild around Victoria during autumn and winter. The Victorian Poisons Information Centre DOES NOT RECOMMEND eating mushrooms that have not been expertly identified.
There are many poisonous species found in the wild that resemble edible ones. You should only eat mushrooms purchased at a supermarket, greengrocer etc.
There is no test that you can do at home to determine if a mushroom is edible. Click on this link for information about mushroom poisoning.