require "abstract_unit" require "active_support/core_ext/object/with_options" class OptionMergerTest < ActiveSupport::TestCase def setup @options = { hello: "world" } end def test_method_with_options_merges_options_when_options_are_present local_options = { cool: true } with_options(@options) do |o| assert_equal local_options, method_with_options(local_options) assert_equal @options.merge(local_options), o.method_with_options(local_options) end end def test_method_with_options_appends_options_when_options_are_missing with_options(@options) do |o| assert_equal Hash.new, method_with_options assert_equal @options, o.method_with_options end end def test_method_with_options_allows_to_overwrite_options local_options = { hello: "moon" } assert_equal @options.keys, local_options.keys with_options(@options) do |o| assert_equal local_options, method_with_options(local_options) assert_equal @options.merge(local_options), o.method_with_options(local_options) assert_equal local_options, o.method_with_options(local_options) end with_options(local_options) do |o| assert_equal local_options.merge(@options), o.method_with_options(@options) end end def test_nested_method_with_options_containing_hashes_merge with_options conditions: { method: :get } do |outer| outer.with_options conditions: { domain: "www" } do |inner| expected = { conditions: { method: :get, domain: "www" } } assert_equal expected, inner.method_with_options end end end def test_nested_method_with_options_containing_hashes_overwrite with_options conditions: { method: :get, domain: "www" } do |outer| outer.with_options conditions: { method: :post } do |inner| expected = { conditions: { method: :post, domain: "www" } } assert_equal expected, inner.method_with_options end end end def test_nested_method_with_options_containing_hashes_going_deep with_options html: { class: "foo", style: { margin: 0, display: "block" } } do |outer| outer.with_options html: { title: "bar", style: { margin: "1em", color: "#fff" } } do |inner| expected = { html: { class: "foo", title: "bar", style: { margin: "1em", display: "block", color: "#fff" } } } assert_equal expected, inner.method_with_options end end end def test_nested_method_with_options_using_lambda local_lambda = lambda { { lambda: true } } with_options(@options) do |o| assert_equal @options.merge(local_lambda.call), o.method_with_options(local_lambda).call end end # Needed when counting objects with the ObjectSpace def test_option_merger_class_method assert_equal ActiveSupport::OptionMerger, ActiveSupport::OptionMerger.new("", "").class end def test_option_merger_implicit_receiver @options.with_options foo: "bar" do merge! fizz: "buzz" end expected = { hello: "world", foo: "bar", fizz: "buzz" } assert_equal expected, @options end private def method_with_options(options = {}) options end end