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rails--rails/activesupport/test/callbacks_test.rb
2019-07-29 14:23:10 +09:00

1196 lines
29 KiB
Ruby

# frozen_string_literal: true
require "abstract_unit"
module CallbacksTest
class Record
include ActiveSupport::Callbacks
define_callbacks :save
def self.before_save(*filters, &blk)
set_callback(:save, :before, *filters, &blk)
end
def self.after_save(*filters, &blk)
set_callback(:save, :after, *filters, &blk)
end
class << self
def callback_symbol(callback_method)
method_name = :"#{callback_method}_method"
define_method(method_name) do
history << [callback_method, :symbol]
end
method_name
end
def callback_proc(callback_method)
Proc.new { |model| model.history << [callback_method, :proc] }
end
def callback_object(callback_method)
klass = Class.new
klass.define_method(callback_method) do |model|
model.history << [:"#{callback_method}_save", :object]
end
klass.new
end
end
def history
@history ||= []
end
end
class CallbackClass
def self.before(model)
model.history << [:before_save, :class]
end
def self.after(model)
model.history << [:after_save, :class]
end
end
class Person < Record
attr_accessor :save_fails
[:before_save, :after_save].each do |callback_method|
callback_method_sym = callback_method.to_sym
send(callback_method, callback_symbol(callback_method_sym))
send(callback_method, callback_proc(callback_method_sym))
send(callback_method, callback_object(callback_method_sym.to_s.gsub(/_save/, "")))
send(callback_method, CallbackClass)
send(callback_method) { |model| model.history << [callback_method_sym, :block] }
end
def save
run_callbacks :save do
raise "inside save" if save_fails
end
end
end
class PersonSkipper < Person
skip_callback :save, :before, :before_save_method, if: :yes
skip_callback :save, :after, :after_save_method, unless: :yes
skip_callback :save, :after, :after_save_method, if: :no
skip_callback :save, :before, :before_save_method, unless: :no
skip_callback :save, :before, CallbackClass, if: :yes
def yes; true; end
def no; false; end
end
class PersonForProgrammaticSkipping < Person
end
class ParentController
include ActiveSupport::Callbacks
define_callbacks :dispatch
set_callback :dispatch, :before, :log, unless: proc { |c| c.action_name == :index || c.action_name == :show }
set_callback :dispatch, :after, :log2
attr_reader :action_name, :logger
def initialize(action_name)
@action_name, @logger = action_name, []
end
def log
@logger << action_name
end
def log2
@logger << action_name
end
def dispatch
run_callbacks :dispatch do
@logger << "Done"
end
self
end
end
class Child < ParentController
skip_callback :dispatch, :before, :log, if: proc { |c| c.action_name == :update }
skip_callback :dispatch, :after, :log2
end
class OneTimeCompile < Record
@@starts_true, @@starts_false = true, false
def initialize
super
end
before_save Proc.new { |r| r.history << [:before_save, :starts_true, :if] }, if: :starts_true
before_save Proc.new { |r| r.history << [:before_save, :starts_false, :if] }, if: :starts_false
before_save Proc.new { |r| r.history << [:before_save, :starts_true, :unless] }, unless: :starts_true
before_save Proc.new { |r| r.history << [:before_save, :starts_false, :unless] }, unless: :starts_false
def starts_true
if @@starts_true
@@starts_true = false
return true
end
@@starts_true
end
def starts_false
unless @@starts_false
@@starts_false = true
return false
end
@@starts_false
end
def save
run_callbacks :save
end
end
class OneTimeCompileTest < ActiveSupport::TestCase
def test_optimized_first_compile
around = OneTimeCompile.new
around.save
assert_equal [
[:before_save, :starts_true, :if],
[:before_save, :starts_true, :unless]
], around.history
end
end
class AfterSaveConditionalPerson < Record
after_save Proc.new { |r| r.history << [:after_save, :string1] }
after_save Proc.new { |r| r.history << [:after_save, :string2] }
def save
run_callbacks :save
end
end
class AfterSaveConditionalPersonCallbackTest < ActiveSupport::TestCase
def test_after_save_runs_in_the_reverse_order
person = AfterSaveConditionalPerson.new
person.save
assert_equal [
[:after_save, :string2],
[:after_save, :string1]
], person.history
end
end
class ConditionalPerson < Record
# proc
before_save Proc.new { |r| r.history << [:before_save, :proc] }, if: Proc.new { |r| true }
before_save Proc.new { |r| r.history << "b00m" }, if: Proc.new { |r| false }
before_save Proc.new { |r| r.history << [:before_save, :proc] }, unless: Proc.new { |r| false }
before_save Proc.new { |r| r.history << "b00m" }, unless: Proc.new { |r| true }
# symbol
before_save Proc.new { |r| r.history << [:before_save, :symbol] }, if: :yes
before_save Proc.new { |r| r.history << "b00m" }, if: :no
before_save Proc.new { |r| r.history << [:before_save, :symbol] }, unless: :no
before_save Proc.new { |r| r.history << "b00m" }, unless: :yes
# Combined if and unless
before_save Proc.new { |r| r.history << [:before_save, :combined_symbol] }, if: :yes, unless: :no
before_save Proc.new { |r| r.history << "b00m" }, if: :yes, unless: :yes
def yes; true; end
def other_yes; true; end
def no; false; end
def other_no; false; end
def save
run_callbacks :save
end
end
class CleanPerson < ConditionalPerson
reset_callbacks :save
end
class MySuper
include ActiveSupport::Callbacks
define_callbacks :save
end
class MySlate < MySuper
attr_reader :history
attr_accessor :save_fails
def initialize
@history = []
end
def save
run_callbacks :save do
raise "inside save" if save_fails
@history << "running"
end
end
def no; false; end
def yes; true; end
def method_missing(sym, *)
case sym
when /^log_(.*)/
@history << $1
nil
when /^wrap_(.*)/
@history << "wrap_#$1"
yield
@history << "unwrap_#$1"
nil
when /^double_(.*)/
@history << "first_#$1"
yield
@history << "second_#$1"
yield
@history << "third_#$1"
else
super
end
end
def respond_to_missing?(sym)
sym.match?(/^(log|wrap)_/) || super
end
end
class AroundPerson < MySlate
set_callback :save, :before, :nope, if: :no
set_callback :save, :before, :nope, unless: :yes
set_callback :save, :after, :tweedle
set_callback :save, :before, proc { |m| m.history << "yup" }
set_callback :save, :before, :nope, if: proc { false }
set_callback :save, :before, :nope, unless: proc { true }
set_callback :save, :before, :yup, if: proc { true }
set_callback :save, :before, :yup, unless: proc { false }
set_callback :save, :around, :tweedle_dum
set_callback :save, :around, :w0tyes, if: :yes
set_callback :save, :around, :w0tno, if: :no
set_callback :save, :around, :tweedle_deedle
def nope
@history << "boom"
end
def yup
@history << "yup"
end
def w0tyes
@history << "w0tyes before"
yield
@history << "w0tyes after"
end
def w0tno
@history << "boom"
yield
end
def tweedle_dum
@history << "tweedle dum pre"
yield
@history << "tweedle dum post"
end
def tweedle
@history << "tweedle"
end
def tweedle_deedle
@history << "tweedle deedle pre"
yield
@history << "tweedle deedle post"
end
end
class AroundPersonResult < MySuper
attr_reader :result
set_callback :save, :after, :tweedle_1
set_callback :save, :around, :tweedle_dum
set_callback :save, :after, :tweedle_2
def tweedle_dum
@result = yield
end
def tweedle_1
:tweedle_1
end
def tweedle_2
:tweedle_2
end
def save
run_callbacks :save do
:running
end
end
end
class HyphenatedCallbacks
include ActiveSupport::Callbacks
define_callbacks :save
attr_reader :stuff
set_callback :save, :before, :action, if: :yes
def yes() true end
def action
@stuff = "ACTION"
end
def save
run_callbacks :save do
@stuff
end
end
end
module ExtendModule
def self.extended(base)
base.class_eval do
set_callback :save, :before, :record3
end
end
def record3
@recorder << 3
end
end
module IncludeModule
def self.included(base)
base.class_eval do
set_callback :save, :before, :record2
end
end
def record2
@recorder << 2
end
end
class ExtendCallbacks
include ActiveSupport::Callbacks
define_callbacks :save
set_callback :save, :before, :record1
include IncludeModule
def save
run_callbacks :save
end
attr_reader :recorder
def initialize
@recorder = []
end
private
def record1
@recorder << 1
end
end
class AroundCallbacksTest < ActiveSupport::TestCase
def test_save_around
around = AroundPerson.new
around.save
assert_equal [
"yup", "yup",
"tweedle dum pre",
"w0tyes before",
"tweedle deedle pre",
"running",
"tweedle deedle post",
"w0tyes after",
"tweedle dum post",
"tweedle"
], around.history
end
end
class DoubleYieldTest < ActiveSupport::TestCase
class DoubleYieldModel < MySlate
set_callback :save, :around, :wrap_outer
set_callback :save, :around, :double_trouble
set_callback :save, :around, :wrap_inner
end
def test_double_save
double = DoubleYieldModel.new
double.save
assert_equal [
"wrap_outer",
"first_trouble",
"wrap_inner",
"running",
"unwrap_inner",
"second_trouble",
"wrap_inner",
"running",
"unwrap_inner",
"third_trouble",
"unwrap_outer",
], double.history
end
end
class CallStackTest < ActiveSupport::TestCase
def test_tidy_call_stack
around = AroundPerson.new
around.save_fails = true
exception = (around.save rescue $!)
# Make sure we have the exception we're expecting
assert_equal "inside save", exception.message
call_stack = exception.backtrace_locations
call_stack.pop caller_locations(0).size
# Yes, this looks like an implementation test, but it's the least
# obtuse way of asserting that there aren't a load of entries in
# the call stack for each callback.
#
# If you've renamed a method, or squeezed more lines out, go ahead
# and update this assertion. But if you're here because a
# refactoring added new lines, please reconsider.
# As shown here, our current budget is one line for run_callbacks
# itself, plus N+1 lines where N is the number of :around
# callbacks that have been invoked, if there are any (plus
# whatever the callbacks do themselves, of course).
assert_equal [
"block in save",
"block in run_callbacks",
"tweedle_deedle",
"block in run_callbacks",
"w0tyes",
"block in run_callbacks",
"tweedle_dum",
"block in run_callbacks",
"run_callbacks",
"save"
], call_stack.map(&:label)
end
def test_short_call_stack
person = Person.new
person.save_fails = true
exception = (person.save rescue $!)
# Make sure we have the exception we're expecting
assert_equal "inside save", exception.message
call_stack = exception.backtrace_locations
call_stack.pop caller_locations(0).size
# This budget much simpler: with no :around callbacks invoked,
# there should be just one line. run_callbacks yields directly
# back to its caller.
assert_equal [
"block in save",
"run_callbacks",
"save"
], call_stack.map(&:label)
end
end
class AroundCallbackResultTest < ActiveSupport::TestCase
def test_save_around
around = AroundPersonResult.new
around.save
assert_equal :running, around.result
end
end
class SkipCallbacksTest < ActiveSupport::TestCase
def test_skip_person
person = PersonSkipper.new
assert_equal [], person.history
person.save
assert_equal [
[:before_save, :proc],
[:before_save, :object],
[:before_save, :block],
[:after_save, :block],
[:after_save, :class],
[:after_save, :object],
[:after_save, :proc],
[:after_save, :symbol]
], person.history
end
def test_skip_person_programmatically
PersonForProgrammaticSkipping._save_callbacks.each do |save_callback|
if "before" == save_callback.kind.to_s
PersonForProgrammaticSkipping.skip_callback("save", save_callback.kind, save_callback.filter)
end
end
person = PersonForProgrammaticSkipping.new
assert_equal [], person.history
person.save
assert_equal [
[:after_save, :block],
[:after_save, :class],
[:after_save, :object],
[:after_save, :proc],
[:after_save, :symbol]
], person.history
end
end
class CallbacksTest < ActiveSupport::TestCase
def test_save_person
person = Person.new
assert_equal [], person.history
person.save
assert_equal [
[:before_save, :symbol],
[:before_save, :proc],
[:before_save, :object],
[:before_save, :class],
[:before_save, :block],
[:after_save, :block],
[:after_save, :class],
[:after_save, :object],
[:after_save, :proc],
[:after_save, :symbol]
], person.history
end
end
class ConditionalCallbackTest < ActiveSupport::TestCase
def test_save_conditional_person
person = ConditionalPerson.new
person.save
assert_equal [
[:before_save, :proc],
[:before_save, :proc],
[:before_save, :symbol],
[:before_save, :symbol],
[:before_save, :combined_symbol],
], person.history
end
end
class ResetCallbackTest < ActiveSupport::TestCase
def test_save_conditional_person
person = CleanPerson.new
person.save
assert_equal [], person.history
end
end
class AbstractCallbackTerminator
include ActiveSupport::Callbacks
def self.set_save_callbacks
set_callback :save, :before, :first
set_callback :save, :before, :second
set_callback :save, :around, :around_it
set_callback :save, :before, :third
set_callback :save, :after, :first
set_callback :save, :around, :around_it
set_callback :save, :after, :third
end
attr_reader :history, :saved, :halted
def initialize
@history = []
end
def around_it
@history << "around1"
yield
@history << "around2"
end
def first
@history << "first"
end
def second
@history << "second"
:halt
end
def third
@history << "third"
end
def save
run_callbacks :save do
@saved = true
end
end
def halted_callback_hook(filter)
@halted = filter
end
end
class CallbackTerminator < AbstractCallbackTerminator
define_callbacks :save, terminator: ->(_, result_lambda) { result_lambda.call == :halt }
set_save_callbacks
end
class CallbackTerminatorSkippingAfterCallbacks < AbstractCallbackTerminator
define_callbacks :save, terminator: ->(_, result_lambda) { result_lambda.call == :halt },
skip_after_callbacks_if_terminated: true
set_save_callbacks
end
class CallbackDefaultTerminator < AbstractCallbackTerminator
define_callbacks :save
def second
@history << "second"
throw(:abort)
end
set_save_callbacks
end
class CallbackFalseTerminator < AbstractCallbackTerminator
define_callbacks :save
def second
@history << "second"
false
end
set_save_callbacks
end
class CallbackObject
def before(caller)
caller.record << "before"
end
def before_save(caller)
caller.record << "before save"
end
def around(caller)
caller.record << "around before"
yield
caller.record << "around after"
end
end
class UsingObjectBefore
include ActiveSupport::Callbacks
define_callbacks :save
set_callback :save, :before, CallbackObject.new
attr_accessor :record
def initialize
@record = []
end
def save
run_callbacks :save do
@record << "yielded"
end
end
end
class UsingObjectAround
include ActiveSupport::Callbacks
define_callbacks :save
set_callback :save, :around, CallbackObject.new
attr_accessor :record
def initialize
@record = []
end
def save
run_callbacks :save do
@record << "yielded"
end
end
end
class CustomScopeObject
include ActiveSupport::Callbacks
define_callbacks :save, scope: [:kind, :name]
set_callback :save, :before, CallbackObject.new
attr_accessor :record
def initialize
@record = []
end
def save
run_callbacks :save do
@record << "yielded"
"CallbackResult"
end
end
end
class OneTwoThreeSave
include ActiveSupport::Callbacks
define_callbacks :save
attr_accessor :record
def initialize
@record = []
end
def save
run_callbacks :save do
@record << "yielded"
end
end
def first
@record << "one"
end
def second
@record << "two"
end
def third
@record << "three"
end
end
class DuplicatingCallbacks < OneTwoThreeSave
set_callback :save, :before, :first, :second
set_callback :save, :before, :first, :third
end
class DuplicatingCallbacksInSameCall < OneTwoThreeSave
set_callback :save, :before, :first, :second, :first, :third
end
class UsingObjectTest < ActiveSupport::TestCase
def test_before_object
u = UsingObjectBefore.new
u.save
assert_equal ["before", "yielded"], u.record
end
def test_around_object
u = UsingObjectAround.new
u.save
assert_equal ["around before", "yielded", "around after"], u.record
end
def test_customized_object
u = CustomScopeObject.new
u.save
assert_equal ["before save", "yielded"], u.record
end
def test_block_result_is_returned
u = CustomScopeObject.new
assert_equal "CallbackResult", u.save
end
end
class CallbackTerminatorTest < ActiveSupport::TestCase
def test_termination_skips_following_before_and_around_callbacks
terminator = CallbackTerminator.new
terminator.save
assert_equal ["first", "second", "third", "first"], terminator.history
end
def test_termination_invokes_hook
terminator = CallbackTerminator.new
terminator.save
assert_equal :second, terminator.halted
end
def test_block_never_called_if_terminated
obj = CallbackTerminator.new
obj.save
assert_not obj.saved
end
end
class CallbackTerminatorSkippingAfterCallbacksTest < ActiveSupport::TestCase
def test_termination_skips_after_callbacks
terminator = CallbackTerminatorSkippingAfterCallbacks.new
terminator.save
assert_equal ["first", "second"], terminator.history
end
end
class CallbackDefaultTerminatorTest < ActiveSupport::TestCase
def test_default_termination
terminator = CallbackDefaultTerminator.new
terminator.save
assert_equal ["first", "second", "third", "first"], terminator.history
end
def test_default_termination_invokes_hook
terminator = CallbackDefaultTerminator.new
terminator.save
assert_equal :second, terminator.halted
end
def test_block_never_called_if_abort_is_thrown
obj = CallbackDefaultTerminator.new
obj.save
assert_not obj.saved
end
end
class CallbackFalseTerminatorTest < ActiveSupport::TestCase
def test_returning_false_does_not_halt_callback
obj = CallbackFalseTerminator.new
obj.save
assert_nil obj.halted
assert obj.saved
end
end
class HyphenatedKeyTest < ActiveSupport::TestCase
def test_save
obj = HyphenatedCallbacks.new
obj.save
assert_equal "ACTION", obj.stuff
end
end
class WriterSkipper < Person
attr_accessor :age
skip_callback :save, :before, :before_save_method, if: -> { age > 21 }
end
class WriterCallbacksTest < ActiveSupport::TestCase
def test_skip_writer
writer = WriterSkipper.new
writer.age = 18
assert_equal [], writer.history
writer.save
assert_equal [
[:before_save, :symbol],
[:before_save, :proc],
[:before_save, :object],
[:before_save, :class],
[:before_save, :block],
[:after_save, :block],
[:after_save, :class],
[:after_save, :object],
[:after_save, :proc],
[:after_save, :symbol]
], writer.history
end
end
class ExtendCallbacksTest < ActiveSupport::TestCase
def test_save
model = ExtendCallbacks.new.extend ExtendModule
model.save
assert_equal [1, 2, 3], model.recorder
end
end
class ExcludingDuplicatesCallbackTest < ActiveSupport::TestCase
def test_excludes_duplicates_in_separate_calls
model = DuplicatingCallbacks.new
model.save
assert_equal ["two", "one", "three", "yielded"], model.record
end
def test_excludes_duplicates_in_one_call
model = DuplicatingCallbacksInSameCall.new
model.save
assert_equal ["two", "one", "three", "yielded"], model.record
end
end
class CallbackProcTest < ActiveSupport::TestCase
def build_class(callback)
Class.new {
include ActiveSupport::Callbacks
define_callbacks :foo
set_callback :foo, :before, callback
def run; run_callbacks :foo; end
}
end
def test_proc_arity_0
calls = []
klass = build_class(->() { calls << :foo })
klass.new.run
assert_equal [:foo], calls
end
def test_proc_arity_1
calls = []
klass = build_class(->(o) { calls << o })
instance = klass.new
instance.run
assert_equal [instance], calls
end
def test_proc_arity_2
assert_raises(ArgumentError) do
klass = build_class(->(x, y) { })
klass.new.run
end
end
def test_proc_negative_called_with_empty_list
calls = []
klass = build_class(->(*args) { calls << args })
klass.new.run
assert_equal [[]], calls
end
end
class ConditionalTests < ActiveSupport::TestCase
def build_class(callback)
Class.new {
include ActiveSupport::Callbacks
define_callbacks :foo
set_callback :foo, :before, :foo, if: callback
def foo; end
def run; run_callbacks :foo; end
}
end
# FIXME: do we really want to support classes as conditionals? There were
# no tests for it previous to this.
def test_class_conditional_with_scope
z = []
callback = Class.new {
define_singleton_method(:foo) { |o| z << o }
}
klass = Class.new {
include ActiveSupport::Callbacks
define_callbacks :foo, scope: [:name]
set_callback :foo, :before, :foo, if: callback
def run; run_callbacks :foo; end
private
def foo; end
}
object = klass.new
object.run
assert_equal [object], z
end
# FIXME: do we really want to support classes as conditionals? There were
# no tests for it previous to this.
def test_class
z = []
klass = build_class Class.new {
define_singleton_method(:before) { |o| z << o }
}
object = klass.new
object.run
assert_equal [object], z
end
def test_proc_negative_arity # passes an empty list if *args
z = []
object = build_class(->(*args) { z << args }).new
object.run
assert_equal [], z.flatten
end
def test_proc_arity0
z = []
object = build_class(->() { z << 0 }).new
object.run
assert_equal [0], z
end
def test_proc_arity1
z = []
object = build_class(->(x) { z << x }).new
object.run
assert_equal [object], z
end
def test_proc_arity2
assert_raises(ArgumentError) do
object = build_class(->(a, b) { }).new
object.run
end
end
end
class ResetCallbackTest < ActiveSupport::TestCase
def build_class(memo)
klass = Class.new {
include ActiveSupport::Callbacks
define_callbacks :foo
set_callback :foo, :before, :hello
def run; run_callbacks :foo; end
}
klass.class_eval {
define_method(:hello) { memo << :hi }
}
klass
end
def test_reset_callbacks
events = []
klass = build_class events
klass.new.run
assert_equal 1, events.length
klass.reset_callbacks :foo
klass.new.run
assert_equal 1, events.length
end
def test_reset_impacts_subclasses
events = []
klass = build_class events
subclass = Class.new(klass) { set_callback :foo, :before, :world }
subclass.class_eval { define_method(:world) { events << :world } }
subclass.new.run
assert_equal 2, events.length
klass.reset_callbacks :foo
subclass.new.run
assert_equal 3, events.length
end
end
class CallbackTypeTest < ActiveSupport::TestCase
def build_class(callback, n = 10)
Class.new {
include ActiveSupport::Callbacks
define_callbacks :foo
n.times { set_callback :foo, :before, callback }
def run; run_callbacks :foo; end
def self.skip(*things); skip_callback :foo, :before, *things; end
}
end
def test_add_class
calls = []
callback = Class.new {
define_singleton_method(:before) { |o| calls << o }
}
build_class(callback).new.run
assert_equal 10, calls.length
end
def test_add_lambda
calls = []
build_class(->(o) { calls << o }).new.run
assert_equal 10, calls.length
end
def test_add_symbol
calls = []
klass = build_class(:bar)
klass.class_eval { define_method(:bar) { calls << klass } }
klass.new.run
assert_equal 1, calls.length
end
def test_skip_class # removes one at a time
calls = []
callback = Class.new {
define_singleton_method(:before) { |o| calls << o }
}
klass = build_class(callback)
9.downto(0) { |i|
klass.skip callback
klass.new.run
assert_equal i, calls.length
calls.clear
}
end
def test_skip_lambda # raises error
calls = []
callback = ->(o) { calls << o }
klass = build_class(callback)
assert_raises(ArgumentError) { klass.skip callback }
klass.new.run
assert_equal 10, calls.length
end
def test_skip_symbol # removes all
calls = []
klass = build_class(:bar)
klass.class_eval { define_method(:bar) { calls << klass } }
klass.skip :bar
klass.new.run
assert_equal 0, calls.length
end
def test_skip_string # raises error
calls = []
klass = build_class(:bar)
klass.class_eval { define_method(:bar) { calls << klass } }
assert_raises(ArgumentError) { klass.skip "bar" }
klass.new.run
assert_equal 1, calls.length
end
def test_skip_undefined_callback # raises error
calls = []
klass = build_class(:bar)
klass.class_eval { define_method(:bar) { calls << klass } }
assert_raises(ArgumentError) { klass.skip :qux }
klass.new.run
assert_equal 1, calls.length
end
def test_skip_without_raise # removes nothing
calls = []
klass = build_class(:bar)
klass.class_eval { define_method(:bar) { calls << klass } }
klass.skip :qux, raise: false
klass.new.run
assert_equal 1, calls.length
end
end
class NotSupportedStringConditionalTest < ActiveSupport::TestCase
def test_string_conditional_options
klass = Class.new(Record)
assert_raises(ArgumentError) { klass.before_save :tweedle, if: ["true"] }
assert_raises(ArgumentError) { klass.before_save :tweedle, if: "true" }
assert_raises(ArgumentError) { klass.after_save :tweedle, unless: "false" }
assert_raises(ArgumentError) { klass.skip_callback :save, :before, :tweedle, if: "true" }
assert_raises(ArgumentError) { klass.skip_callback :save, :after, :tweedle, unless: "false" }
end
end
class NotPermittedStringCallbackTest < ActiveSupport::TestCase
def test_passing_string_callback_is_not_permitted
klass = Class.new(Record)
assert_raises(ArgumentError) do
klass.before_save "tweedle"
end
end
end
end