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require "abstract_unit"
class ExecutorTest < ActiveSupport::TestCase
class DummyError < RuntimeError
end
def test_wrap_invokes_callbacks
called = []
executor.to_run { called << :run }
executor.to_complete { called << :complete }
executor.wrap do
called << :body
end
assert_equal [:run, :body, :complete], called
end
def test_callbacks_share_state
result = false
executor.to_run { @foo = true }
executor.to_complete { result = @foo }
executor.wrap {}
assert result
end
def test_separated_calls_invoke_callbacks
called = []
executor.to_run { called << :run }
executor.to_complete { called << :complete }
state = executor.run!
called << :body
state.complete!
assert_equal [:run, :body, :complete], called
end
def test_exceptions_unwind
called = []
executor.to_run { called << :run_1 }
executor.to_run { raise DummyError }
executor.to_run { called << :run_2 }
executor.to_complete { called << :complete }
assert_raises(DummyError) do
executor.wrap { called << :body }
end
assert_equal [:run_1, :complete], called
end
def test_avoids_double_wrapping
called = []
executor.to_run { called << :run }
executor.to_complete { called << :complete }
executor.wrap do
called << :early
executor.wrap do
called << :body
end
called << :late
end
assert_equal [:run, :early, :body, :late, :complete], called
end
def test_hooks_carry_state
supplied_state = :none
hook = Class.new do
define_method(:run) do
:some_state
end
define_method(:complete) do |state|
supplied_state = state
end
end.new
executor.register_hook(hook)
executor.wrap {}
assert_equal :some_state, supplied_state
end
def test_nil_state_is_sufficient
supplied_state = :none
hook = Class.new do
define_method(:run) do
nil
end
define_method(:complete) do |state|
supplied_state = state
end
end.new
executor.register_hook(hook)
executor.wrap {}
assert_nil supplied_state
end
def test_exception_skips_uninvoked_hook
supplied_state = :none
hook = Class.new do
define_method(:run) do
:some_state
end
define_method(:complete) do |state|
supplied_state = state
end
end.new
executor.to_run do
raise DummyError
end
executor.register_hook(hook)
assert_raises(DummyError) do
executor.wrap {}
end
assert_equal :none, supplied_state
end
def test_exception_unwinds_invoked_hook
supplied_state = :none
hook = Class.new do
define_method(:run) do
:some_state
end
define_method(:complete) do |state|
supplied_state = state
end
end.new
executor.register_hook(hook)
executor.to_run do
raise DummyError
end
assert_raises(DummyError) do
executor.wrap {}
end
assert_equal :some_state, supplied_state
end
def test_hook_insertion_order
invoked = []
supplied_state = []
hook_class = Class.new do
attr_accessor :letter
define_method(:initialize) do |letter|
self.letter = letter
end
define_method(:run) do
invoked << :"run_#{letter}"
:"state_#{letter}"
end
define_method(:complete) do |state|
invoked << :"complete_#{letter}"
supplied_state << state
end
end
executor.register_hook(hook_class.new(:a))
executor.register_hook(hook_class.new(:b))
executor.register_hook(hook_class.new(:c), outer: true)
executor.register_hook(hook_class.new(:d))
executor.wrap {}
assert_equal [:run_c, :run_a, :run_b, :run_d, :complete_a, :complete_b, :complete_d, :complete_c], invoked
assert_equal [:state_a, :state_b, :state_d, :state_c], supplied_state
end
def test_class_serial_is_unaffected
skip if !defined?(RubyVM)
hook = Class.new do
define_method(:run) do
nil
end
define_method(:complete) do |state|
nil
end
end.new
executor.register_hook(hook)
before = RubyVM.stat(:class_serial)
executor.wrap {}
executor.wrap {}
executor.wrap {}
after = RubyVM.stat(:class_serial)
assert_equal before, after
end
def test_separate_classes_can_wrap
other_executor = Class.new(ActiveSupport::Executor)
called = []
executor.to_run { called << :run }
executor.to_complete { called << :complete }
other_executor.to_run { called << :other_run }
other_executor.to_complete { called << :other_complete }
executor.wrap do
other_executor.wrap do
called << :body
end
end
assert_equal [:run, :other_run, :body, :other_complete, :complete], called
end
private
def executor
@executor ||= Class.new(ActiveSupport::Executor)
end
end