diff options
Diffstat (limited to 'activesupport/test/core_ext/object/deep_dup_test.rb')
-rw-r--r-- | activesupport/test/core_ext/object/deep_dup_test.rb | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/object/deep_dup_test.rb b/activesupport/test/core_ext/object/deep_dup_test.rb new file mode 100644 index 0000000000..91d558dbb5 --- /dev/null +++ b/activesupport/test/core_ext/object/deep_dup_test.rb @@ -0,0 +1,53 @@ +require 'abstract_unit' +require 'active_support/core_ext/object' + +class DeepDupTest < ActiveSupport::TestCase + + def test_array_deep_dup + array = [1, [2, 3]] + dup = array.deep_dup + dup[1][2] = 4 + assert_equal nil, array[1][2] + assert_equal 4, dup[1][2] + end + + def test_hash_deep_dup + hash = { :a => { :b => 'b' } } + dup = hash.deep_dup + dup[:a][:c] = 'c' + assert_equal nil, hash[:a][:c] + assert_equal 'c', dup[:a][:c] + end + + def test_array_deep_dup_with_hash_inside + array = [1, { :a => 2, :b => 3 } ] + dup = array.deep_dup + dup[1][:c] = 4 + assert_equal nil, array[1][:c] + assert_equal 4, dup[1][:c] + end + + def test_hash_deep_dup_with_array_inside + hash = { :a => [1, 2] } + dup = hash.deep_dup + dup[:a][2] = 'c' + assert_equal nil, hash[:a][2] + assert_equal 'c', dup[:a][2] + end + + def test_deep_dup_initialize + zero_hash = Hash.new 0 + hash = { :a => zero_hash } + dup = hash.deep_dup + assert_equal 0, dup[:a][44] + end + + def test_object_deep_dup + object = Object.new + dup = object.deep_dup + dup.instance_variable_set(:@a, 1) + assert !object.instance_variable_defined?(:@a) + assert dup.instance_variable_defined?(:@a) + end + +end |