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require "abstract_unit"
require "active_support/core_ext/array"
require "active_support/core_ext/hash"
class ExtractOptionsTest < ActiveSupport::TestCase
class HashSubclass < Hash
end
class ExtractableHashSubclass < Hash
def extractable_options?
true
end
end
def test_extract_options
assert_equal({}, [].extract_options!)
assert_equal({}, [1].extract_options!)
assert_equal({ a: :b }, [{ a: :b }].extract_options!)
assert_equal({ a: :b }, [1, { a: :b }].extract_options!)
end
def test_extract_options_doesnt_extract_hash_subclasses
hash = HashSubclass.new
hash[:foo] = 1
array = [hash]
options = array.extract_options!
assert_equal({}, options)
assert_equal([hash], array)
end
def test_extract_options_extracts_extractable_subclass
hash = ExtractableHashSubclass.new
hash[:foo] = 1
array = [hash]
options = array.extract_options!
assert_equal({ foo: 1 }, options)
assert_equal([], array)
end
def test_extract_options_extracts_hash_with_indifferent_access
array = [{ foo: 1 }.with_indifferent_access]
options = array.extract_options!
assert_equal(1, options[:foo])
end
end
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