WA Possibility of failed character test for immigration

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Hi wanting advice on if im facing The possibility of a failed character test for immigration purposes. Im being charged with common assault and plan to plead guilty, even though I was provoked into doing it, so said "victim" could black mail me. However I have previous charges of gain benefit by fraud (X 3) stealing (X 4) behave In a violent matter (x1) driving without a valid licence (1). I received fines instead of imprisonment for all of these charges which are 6-7 years old. Would this be enough for me to fail fhw character test