setup

test round(1.0001) is 1
test round(1.5) is 2
test round(1.5001) is 2

test round(-1.0001) is -1
test round(-1.5) is -2
test round(-1.5001) is -2

test round(1.2345, 3) is 1.235
test round(1.2345, 2) is 1.23
test round(1.2345, 1) is 1.2

test round(12345, -1) is 12350
test round(12345, -2) is 12300
test round(12345, -3) is 12000

teardown