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rails--rails/activesupport/test/concern_test.rb

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# frozen_string_literal: true
require_relative "abstract_unit"
require "active_support/concern"
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class ConcernTest < ActiveSupport::TestCase
module Baz
extend ActiveSupport::Concern
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class_methods do
attr_accessor :included_ran, :prepended_ran
def baz
"baz"
end
end
included do
self.included_ran = true
end
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prepended do
self.prepended_ran = true
end
def baz
"baz"
end
end
module Bar
extend ActiveSupport::Concern
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include Baz
module ClassMethods
def baz
"bar's baz + " + super
end
end
def bar
"bar"
end
def baz
"bar+" + super
end
end
module Foo
extend ActiveSupport::Concern
include Bar, Baz
end
module Qux
module ClassMethods
end
end
def setup
@klass = Class.new
end
def test_module_is_included_normally
@klass.include(Baz)
assert_equal "baz", @klass.new.baz
assert_includes @klass.included_modules, ConcernTest::Baz
end
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def test_module_is_prepended_normally
@klass.prepend(Baz)
assert_equal "baz", @klass.new.baz
assert_includes @klass.included_modules, ConcernTest::Baz
end
def test_class_methods_are_extended
@klass.include(Baz)
assert_equal "baz", @klass.baz
assert_equal ConcernTest::Baz::ClassMethods, (class << @klass; included_modules; end)[0]
end
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def test_class_methods_are_extended_when_prepended
@klass.prepend(Baz)
assert_equal "baz", @klass.baz
assert_equal ConcernTest::Baz::ClassMethods, (class << @klass; included_modules; end)[0]
end
def test_class_methods_are_extended_only_on_expected_objects
::Object.include(Qux)
Object.extend(Qux::ClassMethods)
# module needs to be created after Qux is included in Object or bug won't
# be triggered
test_module = Module.new do
extend ActiveSupport::Concern
class_methods do
def test
end
end
end
@klass.include test_module
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assert_not_respond_to Object, :test
Qux.class_eval do
remove_const :ClassMethods
end
end
def test_included_block_is_ran
@klass.include(Baz)
assert_equal true, @klass.included_ran
end
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def test_included_block_is_not_ran_when_prepended
@klass.prepend(Baz)
assert_nil @klass.included_ran
end
def test_prepended_block_is_ran
@klass.prepend(Baz)
assert_equal true, @klass.prepended_ran
end
def test_prepended_block_is_not_ran_when_included
@klass.include(Baz)
assert_nil @klass.prepended_ran
end
def test_modules_dependencies_are_met
@klass.include(Bar)
assert_equal "bar", @klass.new.bar
assert_equal "bar+baz", @klass.new.baz
assert_equal "bar's baz + baz", @klass.baz
assert_includes @klass.included_modules, ConcernTest::Bar
end
def test_dependencies_with_multiple_modules
@klass.include(Foo)
assert_equal [ConcernTest::Foo, ConcernTest::Bar, ConcernTest::Baz], @klass.included_modules[0..2]
end
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def test_dependencies_with_multiple_modules_when_prepended
@klass.prepend(Foo)
assert_equal [ConcernTest::Foo, ConcernTest::Bar, ConcernTest::Baz], @klass.included_modules[0..2]
end
def test_raise_on_multiple_included_calls
assert_raises(ActiveSupport::Concern::MultipleIncludedBlocks) do
Module.new do
extend ActiveSupport::Concern
included do
end
included do
end
end
end
end
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def test_raise_on_multiple_prepended_calls
assert_raises(ActiveSupport::Concern::MultiplePrependBlocks) do
Module.new do
extend ActiveSupport::Concern
prepended do
end
prepended do
end
end
end
end
def test_no_raise_on_same_included_or_prepended_call
assert_nothing_raised do
2.times do
load File.expand_path("../fixtures/concern/some_concern.rb", __FILE__)
end
end
end
def test_prepended_and_included_methods
included = Module.new.extend(ActiveSupport::Concern)
prepended = Module.new.extend(ActiveSupport::Concern)
@klass.class_eval { def initialize; @foo = []; end }
included.module_eval { def foo; @foo << :included; end }
@klass.class_eval { def foo; super; @foo << :class; end }
prepended.module_eval { def foo; super; @foo << :prepended; end }
@klass.include included
@klass.prepend prepended
assert_equal @klass.new.foo, [:included, :class, :prepended]
end
def test_prepended_and_included_class_methods
included = Module.new.extend(ActiveSupport::Concern)
prepended = Module.new.extend(ActiveSupport::Concern)
@klass.class_eval { @foo = [] }
included.class_methods { def foo; @foo << :included; end }
@klass.class_eval { def self.foo; super; @foo << :class; end }
prepended.class_methods { def foo; super; @foo << :prepended; end }
@klass.include included
@klass.prepend prepended
assert_equal @klass.foo, [:included, :class, :prepended]
end
end