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rails--rails/activesupport/test/load_paths_test.rb

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require 'abstract_unit'
class LoadPathsTest < Test::Unit::TestCase
def test_uniq_load_paths
load_paths_count = $LOAD_PATH.inject({}) { |paths, path|
expanded_path = File.expand_path(path)
paths[expanded_path] ||= 0
paths[expanded_path] += 1
paths
}
load_paths_count[File.expand_path('../../lib', __FILE__)] -= 1
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filtered = load_paths_count.select { |k, v| v > 1 }
assert filtered.empty?, filtered.inspect
end
end