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# frozen_string_literal: true
require "test_helper"
require "pathname"
class TestRequireInteraction < LoaderTest
def assert_required(str)
assert_equal true, require(str)
end
def assert_not_required(str)
assert_equal false, require(str)
end
test "our decorated require returns true or false as expected" do
on_teardown do
remove_const :User
delete_loaded_feature "user.rb"
end
files = [["user.rb", "class User; end"]]
with_files(files) do
with_load_path(".") do
assert_required "user"
assert_not_required "user"
end
end
end
test "our decorated require returns true or false as expected (Pathname)" do
on_teardown do
remove_const :User
delete_loaded_feature "user.rb"
end
files = [["user.rb", "class User; end"]]
pathname_for_user = Pathname.new("user")
with_files(files) do
with_load_path(".") do
assert_required pathname_for_user
assert_not_required pathname_for_user
end
end
end
test "autoloading makes require idempotent even with a relative path" do
files = [["user.rb", "class User; end"]]
with_setup(files, load_path: ".") do
assert User
assert_not_required "user"
end
end
test "a required top-level file is still detected as autoloadable" do
files = [["user.rb", "class User; end"]]
with_setup(files, load_path: ".") do
assert_required "user"
loader.unload
assert !Object.const_defined?(:User, false)
loader.setup
assert User
end
end
test "a required top-level file is still detected as autoloadable (Pathname)" do
files = [["user.rb", "class User; end"]]
with_setup(files, load_path: ".") do
assert_required Pathname.new("user")
assert User
loader.unload
assert !Object.const_defined?(:User, false)
loader.setup
assert User
end
end
test "require autovivifies as needed" do
files = [
["rd1/admin/user.rb", "class Admin::User; end"],
["rd2/admin/users_controller.rb", "class Admin::UsersController; end"]
]
with_setup(files, load_path: %w(rd1 rd2)) do
assert_required "admin/user"
assert Admin::User
assert Admin::UsersController
loader.unload
assert !Object.const_defined?(:Admin)
end
end
test "files deep down the current visited level are recognized as managed (implicit)" do
files = [["foo/bar/baz/zoo/woo.rb", "Foo::Bar::Baz::Zoo::Woo = 1"]]
with_setup(files, load_path: ".") do
assert_required "foo/bar/baz/zoo/woo"
assert loader.unloadable_cpath?("Foo::Bar::Baz::Zoo::Woo")
end
end
test "files deep down the current visited level are recognized as managed (explicit)" do
files = [
["foo/bar/baz/zoo.rb", "module Foo::Bar::Baz::Zoo; include Wadus; end"],
["foo/bar/baz/zoo/wadus.rb", "module Foo::Bar::Baz::Zoo::Wadus; end"],
["foo/bar/baz/zoo/woo.rb", "Foo::Bar::Baz::Zoo::Woo = 1"]
]
with_setup(files, load_path: ".") do
assert_required "foo/bar/baz/zoo/woo"
assert loader.unloadable_cpath?("Foo::Bar::Baz::Zoo::Wadus")
assert loader.unloadable_cpath?("Foo::Bar::Baz::Zoo::Woo")
end
end
test "require works well with explicit namespaces" do
files = [
["hotel.rb", "class Hotel; X = true; end"],
["hotel/pricing.rb", "class Hotel::Pricing; end"]
]
with_setup(files, load_path: ".") do
assert_required "hotel/pricing"
assert Hotel::Pricing
assert Hotel::X
end
end
test "you can autoload yourself in a required file" do
files = [
["my_gem.rb", <<-EOS],
loader = Zeitwerk::Loader.new
loader.push_dir(__dir__)
loader.enable_reloading
loader.setup
module MyGem; end
EOS
["my_gem/foo.rb", "class MyGem::Foo; end"]
]
with_files(files) do |cwd|
with_load_path(cwd) do
assert_required "my_gem"
end
end
end
test "does not autovivify while loading an explicit namespace, constant is not yet defined - file first" do
files = [
["hotel.rb", <<-EOS],
loader = Zeitwerk::Loader.new
loader.push_dir(__dir__)
loader.enable_reloading
loader.setup
Hotel.name
class Hotel
end
EOS
["hotel/pricing.rb", "class Hotel::Pricing; end"]
]
with_files(files) do |cwd|
iter = ->(dir, &block) do
if dir == cwd
block.call("hotel.rb")
block.call("hotel")
end
end
Dir.stub :foreach, iter do
e = assert_raises(NameError) do
with_load_path(cwd) do
assert_required "hotel"
end
end
assert_match %r/Hotel/, e.message
end
end
end
test "does not autovivify while loading an explicit namespace, constant is not yet defined - file last" do
files = [
["hotel.rb", <<-EOS],
loader = Zeitwerk::Loader.new
loader.push_dir(__dir__)
loader.enable_reloading
loader.setup
Hotel.name
class Hotel
end
EOS
["hotel/pricing.rb", "class Hotel::Pricing; end"]
]
with_files(files) do |cwd|
iter = ->(dir, &block) do
if dir == cwd
block.call("hotel")
block.call("hotel.rb")
end
end
Dir.stub :foreach, iter do
e = assert_raises(NameError) do
with_load_path(cwd) do
assert_required "hotel"
end
end
assert_match %r/Hotel/, e.message
end
end
end
end
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