Sha256: 7530dadb928dc93f1bc82d964922add998286243530463d2fc35baecf362ccb8
Contents?: true
Size: 838 Bytes
Versions: 22
Compression:
Stored size: 838 Bytes
Contents
require 'facet/hash/has_only_keys'
class Hash
# Returns true is hash has only then given keys,
# otherwise throws an ArgumentError.
#
# h = { :a => 1, :b => 2 }
# h.assert_has_only_keys( :a, :b ) #=> true
# h.assert_has_only_keys( :a ) #=> ArgumentError
#
def assert_has_only_keys(*check_keys)
raise(ArgumentError, "has unexpected key(s)") unless has_only_keys?(*check_keys)
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TCHash < Test::Unit::TestCase
def test_assert_has_only_keys
assert_nothing_raised { { :a=>1,:b=>2,:c=>3 }.assert_has_only_keys(:a,:b,:c) }
assert_raises( ArgumentError ) { { :a=>1,:b=>2,:c=>3 }.assert_has_only_keys(:a,:b) }
end
end
=end
Version data entries
22 entries across 22 versions & 1 rubygems