Green’s Dictionary of Slang

(UK/W.I.) a person, a fellow.

1956		S. Selvon Lonely Londoners 13: This test when he did first come open up a club, and by and by he save up money and buy a house.
1962		D. Walcott ‘Tales on the Islands’ in Coll. Poems (1986) 25: They catch his wife with two tests up the beach.
2006		W. Chen Chutney Power and Stories 12: Andy Coleman, nah, that tess who working in the refinery. He does dress sharp too bad, and all them chicks does fall for him.