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-rw-r--r--actionpack/test/template/form_helper_test.rb50
1 files changed, 50 insertions, 0 deletions
diff --git a/actionpack/test/template/form_helper_test.rb b/actionpack/test/template/form_helper_test.rb
index f13296a175..3fa3898ec8 100644
--- a/actionpack/test/template/form_helper_test.rb
+++ b/actionpack/test/template/form_helper_test.rb
@@ -1835,6 +1835,56 @@ class FormHelperTest < ActionView::TestCase
assert_dom_equal expected, output_buffer
end
+ def test_nested_fields_for_index_method_with_existing_records_on_a_nested_attributes_collection_association
+ @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
+
+ form_for(@post) do |f|
+ expected = 0
+ @post.comments.each do |comment|
+ f.fields_for(:comments, comment) { |cf|
+ assert_equal cf.index, expected
+ expected += 1
+ }
+ end
+ end
+ end
+
+ def test_nested_fields_for_index_method_with_existing_and_new_records_on_a_nested_attributes_collection_association
+ @post.comments = [Comment.new(321), Comment.new]
+
+ form_for(@post) do |f|
+ expected = 0
+ @post.comments.each do |comment|
+ f.fields_for(:comments, comment) { |cf|
+ assert_equal cf.index, expected
+ expected += 1
+ }
+ end
+ end
+ end
+
+ def test_nested_fields_for_index_method_with_existing_records_on_a_supplied_nested_attributes_collection
+ @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
+
+ form_for(@post) do |f|
+ expected = 0
+ f.fields_for(:comments, @post.comments) { |cf|
+ assert_equal cf.index, expected
+ expected += 1
+ }
+ end
+ end
+
+ def test_nested_fields_for_index_method_with_child_index_option_override_on_a_nested_attributes_collection_association
+ @post.comments = []
+
+ form_for(@post) do |f|
+ f.fields_for(:comments, Comment.new(321), :child_index => 'abc') { |cf|
+ assert_equal cf.index, 'abc'
+ }
+ end
+ end
+
def test_nested_fields_uses_unique_indices_for_different_collection_associations
@post.comments = [Comment.new(321)]
@post.tags = [Tag.new(123), Tag.new(456)]