Method: Minitest::AssertIncludesMessage#optional_diff

Defined in:
lib/minitest/superdiff_plugin.rb

#optional_diff ⇒ Object 



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# File 'lib/minitest/superdiff_plugin.rb', line 82

def optional_diff
  case @collection
  when Array, Set
    collection_with_item = @collection + [@item].flatten(1)
    basic_diff(@collection, collection_with_item)
  end
end