Merge pull request #546 from jonkgrimes/non-destructive-array-filter

Use a non-destructive `map` call when transforming an Array filter

lib/active_interaction/filters/array_filter.rb

@@ -49,7 +49,7 @@ def process(value, context)
  children = []
 
  unless filters.empty?
- value.map! do |item|
+ value = value.map do |item|
  result = filters[:'0'].process(item, context)
  children.push(result)
  result.value

spec/active_interaction/filters/array_filter_spec.rb

@@ -74,6 +74,11 @@ def to_ary
  it 'returns the transformed value' do
  expect(result.value).to eql [:test]
  end
+
+ it 'does not modify the original value' do
+ expect(result.value.object_id).to_not eql value.object_id
+ expect(value).to eql ['test']
+ end
  end
 
  context 'with a nested filter' do