activesupport/test/core_ext/module/reachable_test.rb


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# frozen_string_literal: true

require "abstract_unit"
require "active_support/core_ext/module/reachable"

class AnonymousTest < ActiveSupport::TestCase
  test "an anonymous class or module is not reachable" do
    assert_deprecated do
      assert !Module.new.reachable?
      assert !Class.new.reachable?
    end
  end

  test "ordinary named classes or modules are reachable" do
    assert_deprecated do
      assert Kernel.reachable?
      assert Object.reachable?
    end
  end

  test "a named class or module whose constant has gone is not reachable" do
    c = eval "class C; end; C"
    m = eval "module M; end; M"

    self.class.send(:remove_const, :C)
    self.class.send(:remove_const, :M)

    assert_deprecated do
      assert !c.reachable?
      assert !m.reachable?
    end
  end

  test "a named class or module whose constants store different objects are not reachable" do
    c = eval "class C; end; C"
    m = eval "module M; end; M"

    self.class.send(:remove_const, :C)
    self.class.send(:remove_const, :M)

    eval "class C; end"
    eval "module M; end"

    assert_deprecated do
      assert C.reachable?
      assert M.reachable?
      assert !c.reachable?
      assert !m.reachable?
    end
  end
end