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strict_loading_test.rb
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strict_loading_test.rb
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# frozen_string_literal: true
require "cases/helper"
require "models/developer"
require "models/computer"
require "models/mentor"
require "models/project"
require "models/ship"
class StrictLoadingTest < ActiveRecord::TestCase
fixtures :developers
fixtures :projects
fixtures :ships
def test_strict_loading!
developer = Developer.first
assert_not_predicate developer, :strict_loading?
developer.strict_loading!
assert_predicate developer, :strict_loading?
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.audit_logs.to_a
end
end
def test_strict_loading
Developer.all.each { |d| assert_not d.strict_loading? }
Developer.strict_loading.each { |d| assert d.strict_loading? }
end
def test_strict_loading_by_default
with_strict_loading_by_default(Developer) do
Developer.all.each { |d| assert d.strict_loading? }
end
end
def test_strict_loading_by_default_can_be_set_per_model
model1 = Class.new(ActiveRecord::Base) do
self.table_name = "developers"
self.strict_loading_by_default = true
end.new
model2 = Class.new(ActiveRecord::Base) do
self.table_name = "developers"
self.strict_loading_by_default = false
end.new
assert_predicate model1, :strict_loading?
assert_not_predicate model2, :strict_loading?
end
def test_strict_loading_by_default_is_inheritable
with_strict_loading_by_default(ActiveRecord::Base) do
model1 = Class.new(ActiveRecord::Base) do
self.table_name = "developers"
end.new
model2 = Class.new(ActiveRecord::Base) do
self.table_name = "developers"
self.strict_loading_by_default = false
end.new
assert_predicate model1, :strict_loading?
assert_not_predicate model2, :strict_loading?
end
end
def test_raises_if_strict_loading_and_lazy_loading
dev = Developer.strict_loading.first
assert_predicate dev, :strict_loading?
assert_raises ActiveRecord::StrictLoadingViolationError do
dev.audit_logs.to_a
end
end
def test_raises_if_strict_loading_by_default_and_lazy_loading
with_strict_loading_by_default(Developer) do
dev = Developer.first
assert_predicate dev, :strict_loading?
assert_raises ActiveRecord::StrictLoadingViolationError do
dev.audit_logs.to_a
end
end
end
def test_strict_loading_is_ignored_in_validation_context
with_strict_loading_by_default(Developer) do
developer = Developer.first
assert_predicate developer, :strict_loading?
assert_nothing_raised do
AuditLogRequired.create! developer_id: developer.id, message: "i am a message"
end
end
end
def test_strict_loading_with_reflection_is_ignored_in_validation_context
with_strict_loading_by_default(Developer) do
developer = Developer.first
assert_predicate developer, :strict_loading?
developer.required_audit_logs.build(message: "I am message")
developer.save!
end
end
def test_preload_audit_logs_are_strict_loading_because_parent_is_strict_loading
developer = Developer.first
3.times do
AuditLog.create(developer: developer, message: "I am message")
end
dev = Developer.includes(:audit_logs).strict_loading.first
assert_predicate dev, :strict_loading?
assert dev.audit_logs.all?(&:strict_loading?), "Expected all audit logs to be strict_loading"
end
def test_preload_audit_logs_are_strict_loading_because_it_is_strict_loading_by_default
with_strict_loading_by_default(AuditLog) do
developer = Developer.first
3.times do
AuditLog.create(developer: developer, message: "I am message")
end
dev = Developer.includes(:audit_logs).first
assert_not_predicate dev, :strict_loading?
assert dev.audit_logs.all?(&:strict_loading?), "Expected all audit logs to be strict_loading"
end
end
def test_eager_load_audit_logs_are_strict_loading_because_parent_is_strict_loading_in_hm_relation
developer = Developer.first
3.times do
AuditLog.create(developer: developer, message: "I am message")
end
dev = Developer.eager_load(:strict_loading_audit_logs).first
assert dev.strict_loading_audit_logs.all?(&:strict_loading?), "Expected all audit logs to be strict_loading"
end
def test_eager_load_audit_logs_are_strict_loading_because_parent_is_strict_loading
developer = Developer.first
3.times do
AuditLog.create(developer: developer, message: "I am message")
end
dev = Developer.eager_load(:audit_logs).strict_loading.first
assert_predicate dev, :strict_loading?
assert dev.audit_logs.all?(&:strict_loading?), "Expected all audit logs to be strict_loading"
end
def test_eager_load_audit_logs_are_strict_loading_because_it_is_strict_loading_by_default
with_strict_loading_by_default(AuditLog) do
developer = Developer.first
3.times do
AuditLog.create(developer: developer, message: "I am message")
end
dev = Developer.eager_load(:audit_logs).first
assert_not_predicate dev, :strict_loading?
assert_predicate AuditLog.last, :strict_loading?
assert dev.audit_logs.all?(&:strict_loading?), "Expected all audit logs to be strict_loading"
end
end
def test_raises_on_unloaded_relation_methods_if_strict_loading
dev = Developer.strict_loading.first
assert_predicate dev, :strict_loading?
assert_raises ActiveRecord::StrictLoadingViolationError do
dev.audit_logs.first
end
end
def test_raises_on_unloaded_relation_methods_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
dev = Developer.first
assert_predicate dev, :strict_loading?
assert_raises ActiveRecord::StrictLoadingViolationError do
dev.audit_logs.first
end
end
end
def test_raises_on_lazy_loading_a_strict_loading_belongs_to_relation
mentor = Mentor.create!(name: "Mentor")
developer = Developer.first
developer.update_column(:mentor_id, mentor.id)
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.strict_loading_mentor
end
end
def test_raises_on_lazy_loading_a_belongs_to_relation_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
mentor = Mentor.create!(name: "Mentor")
developer = Developer.first
developer.update_column(:mentor_id, mentor.id)
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.mentor
end
end
end
def test_does_not_raise_on_eager_loading_a_strict_loading_belongs_to_relation
mentor = Mentor.create!(name: "Mentor")
Developer.first.update_column(:mentor_id, mentor.id)
developer = Developer.includes(:strict_loading_mentor).first
assert_nothing_raised { developer.strict_loading_mentor }
end
def test_does_not_raise_on_eager_loading_a_belongs_to_relation_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
mentor = Mentor.create!(name: "Mentor")
Developer.first.update_column(:mentor_id, mentor.id)
developer = Developer.includes(:mentor).first
assert_nothing_raised { developer.mentor }
end
end
def test_raises_on_lazy_loading_a_strict_loading_has_one_relation
developer = Developer.first
ship = Ship.first
ship.update_column(:developer_id, developer.id)
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.strict_loading_ship
end
end
def test_raises_on_lazy_loading_a_has_one_relation_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
developer = Developer.first
ship = Ship.first
ship.update_column(:developer_id, developer.id)
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.ship
end
end
end
def test_does_not_raise_on_eager_loading_a_strict_loading_has_one_relation
Ship.first.update_column(:developer_id, Developer.first.id)
developer = Developer.includes(:strict_loading_ship).first
assert_nothing_raised { developer.strict_loading_ship }
end
def test_does_not_raise_on_eager_loading_a_has_one_relation_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
Ship.first.update_column(:developer_id, Developer.first.id)
developer = Developer.includes(:ship).first
assert_nothing_raised { developer.ship }
end
end
def test_raises_on_lazy_loading_a_strict_loading_has_many_relation
developer = Developer.first
AuditLog.create(
3.times.map do
{ developer_id: developer.id, message: "I am message" }
end
)
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.strict_loading_opt_audit_logs.first
end
end
def test_raises_on_lazy_loading_a_has_many_relation_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
developer = Developer.first
AuditLog.create(
3.times.map do
{ developer_id: developer.id, message: "I am message" }
end
)
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.audit_logs.first
end
end
end
def test_does_not_raise_on_eager_loading_a_strict_loading_has_many_relation
developer = Developer.first
AuditLog.create(
3.times.map do
{ developer_id: developer.id, message: "I am message" }
end
)
developer = Developer.includes(:strict_loading_opt_audit_logs).first
assert_nothing_raised { developer.strict_loading_opt_audit_logs.first }
end
def test_does_not_raise_on_eager_loading_a_has_many_relation_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
developer = Developer.first
AuditLog.create(
3.times.map do
{ developer_id: developer.id, message: "I am message" }
end
)
developer = Developer.includes(:audit_logs).first
assert_nothing_raised { developer.audit_logs.first }
end
end
def test_raises_on_lazy_loading_a_strict_loading_habtm_relation
developer = Developer.first
developer.projects << Project.first
assert_not developer.strict_loading_projects.loaded?
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.strict_loading_projects.first
end
end
def test_raises_on_lazy_loading_a_habtm_relation_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
developer = Developer.first
developer.projects << Project.first
assert_not developer.projects.loaded?
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.projects.first
end
end
end
def test_does_not_raise_on_eager_loading_a_strict_loading_habtm_relation
Developer.first.projects << Project.first
developer = Developer.includes(:strict_loading_projects).first
assert_nothing_raised { developer.strict_loading_projects.first }
end
def test_does_not_raise_on_eager_loading_a_habtm_relation_if_strict_loading_by_default
with_strict_loading_by_default(Developer) do
Developer.first.projects << Project.first
developer = Developer.includes(:projects).first
assert_nothing_raised { developer.projects.first }
end
end
def test_strict_loading_violation_raises_by_default
assert_equal :raise, ActiveRecord::Base.action_on_strict_loading_violation
developer = Developer.first
assert_not_predicate developer, :strict_loading?
developer.strict_loading!
assert_predicate developer, :strict_loading?
assert_raises ActiveRecord::StrictLoadingViolationError do
developer.audit_logs.to_a
end
end
def test_strict_loading_violation_can_log_instead_of_raise
old_value = ActiveRecord::Base.action_on_strict_loading_violation
ActiveRecord::Base.action_on_strict_loading_violation = :log
assert_equal :log, ActiveRecord::Base.action_on_strict_loading_violation
developer = Developer.first
assert_not_predicate developer, :strict_loading?
developer.strict_loading!
assert_predicate developer, :strict_loading?
assert_logged("Strict loading violation: AuditLog lazily loaded on Developer.") do
developer.audit_logs.to_a
end
ensure
ActiveRecord::Base.action_on_strict_loading_violation = old_value
end
private
def with_strict_loading_by_default(model)
previous_strict_loading_by_default = model.strict_loading_by_default
model.strict_loading_by_default = true
yield
ensure
model.strict_loading_by_default = previous_strict_loading_by_default
end
def assert_logged(message)
old_logger = ActiveRecord::Base.logger
log = StringIO.new
ActiveRecord::Base.logger = Logger.new(log)
begin
yield
log.rewind
assert_match message, log.read
ensure
ActiveRecord::Base.logger = old_logger
end
end
end