setup

test "abc" & "abc" is "abcabc"

test "abc" & (1 + 2) is "abc3"
test "abc" & (1 / 2) is "abc0.5"
test "abc" & (1 > 2) is "abcfalse"
test "abc" & empty is "abc"

test 1 & (1 + 1) is 12
test 1 & (1 / 2) is 10.5
test 1 & (1 > 2) is "1false"
test 1 & empty is 1

test empty & empty is empty

teardown