#!/usr/bin/ruby
#
## Hash.concat on various things, including non-hashes
#
var hash = Hash()
hash += 1
assert_eq(hash{"1"}, nil)
hash += Hash(:a => :b)
assert_eq(hash{:a}, :b)
hash += %w(c d)           # 2-item array
assert_eq(hash{:c}, :d)
hash += "2"：3             # an actual Pair
assert_eq(hash{"2"}, 3)
say "** Test passed!"