package size import "testing" func TestSize(t *testing.T) { type Test struct { in int out string } var tests = []Test{ {-1, "negative"}, {5, "small"}, } for i, test := range tests { size := Size(test.in) if size != test.out { t.Errorf("#%d: Size(%d)=%s; want %s", i, test.in, size, test.out) } } }