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require "abstract_unit"
require "active_support/core_ext/array"
class WrapTest < ActiveSupport::TestCase
class FakeCollection
def to_ary
["foo", "bar"]
end
end
class Proxy
def initialize(target) @target = target end
def method_missing(*a) @target.send(*a) end
end
class DoubtfulToAry
def to_ary
:not_an_array
end
end
class NilToAry
def to_ary
nil
end
end
def test_array
ary = %w(foo bar)
assert_same ary, Array.wrap(ary)
end
def test_nil
assert_equal [], Array.wrap(nil)
end
def test_object
o = Object.new
assert_equal [o], Array.wrap(o)
end
def test_string
assert_equal ["foo"], Array.wrap("foo")
end
def test_string_with_newline
assert_equal ["foo\nbar"], Array.wrap("foo\nbar")
end
def test_object_with_to_ary
assert_equal ["foo", "bar"], Array.wrap(FakeCollection.new)
end
def test_proxy_object
p = Proxy.new(Object.new)
assert_equal [p], Array.wrap(p)
end
def test_proxy_to_object_with_to_ary
p = Proxy.new(FakeCollection.new)
assert_equal [p], Array.wrap(p)
end
def test_struct
o = Struct.new(:foo).new(123)
assert_equal [o], Array.wrap(o)
end
def test_wrap_returns_wrapped_if_to_ary_returns_nil
o = NilToAry.new
assert_equal [o], Array.wrap(o)
end
def test_wrap_does_not_complain_if_to_ary_does_not_return_an_array
assert_equal DoubtfulToAry.new.to_ary, Array.wrap(DoubtfulToAry.new)
end
end
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