var bob = 5.5
assert_equal("5.5", "${bob}")
assert_equal("val: 8 and 8", "val: P${5equal("5.5", "${bob}")
assert_equal("val: 8 and 8", "val: P${5.5 + 2.5} and ${bob}")
assert_equal("val: 8 and 8", "val: P${5.5.5 + 2.5} and ${bob}")
assert_equal("val: 8 and 8", "val: P${5.5 + 2.5} and ${bob + 2b + 2.5}")
