## TODO: add more test of built in functions.

assert("append" in dir([]))
assert("_repr" in dir(null))

assert(list_join([1, 2, 3]) == "123")
assert(list_join(["hello", " world"]) == "hello world")
assert(list_join([[], []]) == "[][]")

assert(min(-1, 2) == -1)
assert(max(100, -200) == 100)

class N
  def _init(n)
    self.n = n
  end
  def < (other)
    return self.n < other.n
  end
end

n1 = N(1)
n2 = N(2)
assert(min(n1, n2) == n1)
assert(max(n1, n2) == n2)

## If we got here, that means all test were passed.
print('All TESTS PASSED')