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# frozen_string_literal: true
RSpec.shared_examples 'a BulkInsertSafe model' do |klass|
# Call `.dup` on the class passed in, as a test in this set of examples
# calls `belongs_to` on the class, thereby adding a new belongs_to
# relationship to the model that can break remaining specs in the test suite.
let(:target_class) { klass.dup }
# We consider all callbacks unsafe for bulk insertions unless we have explicitly
# allowed them (especially anything related to :save, :create, :commit, etc.)
let(:unsafe_callbacks) do
ActiveRecord::Callbacks::CALLBACKS.reject do |callback|
cb_name = callback.to_s.gsub(/(before_|after_|around_)/, '').to_sym
BulkInsertSafe::ALLOWED_CALLBACKS.include?(cb_name)
end.to_set
end
context 'when calling class methods directly' do
it 'raises an error when method is not bulk-insert safe' do
unsafe_callbacks.each do |m|
expect { target_class.send(m, nil) }.to(
raise_error(BulkInsertSafe::MethodNotAllowedError),
"Expected call to #{m} to raise an error, but it didn't"
)
end
end
it 'does not raise an error when method is bulk-insert safe' do
BulkInsertSafe::ALLOWED_CALLBACKS.each do |name|
expect { target_class.set_callback(name) {} }.not_to raise_error
end
end
it 'does not raise an error when the call is triggered by belongs_to' do
expect { target_class.belongs_to(:other_record) }.not_to raise_error
end
end
describe '.bulk_insert!' do
context 'when all items are valid' do
it 'inserts them all' do
items = valid_items_for_bulk_insertion
expect(items).not_to be_empty
expect { target_class.bulk_insert!(items) }.to change { target_class.count }.by(items.size)
end
it 'returns an empty array' do
items = valid_items_for_bulk_insertion
expect(items).not_to be_empty
expect(target_class.bulk_insert!(items)).to eq([])
end
end
context 'when some items are invalid' do
it 'does not insert any of them and raises an error' do
items = invalid_items_for_bulk_insertion
# it is not always possible to create invalid items
if items.any?
expect { target_class.bulk_insert!(items) }.to raise_error(ActiveRecord::RecordInvalid)
expect(target_class.count).to eq(0)
end
end
it 'inserts them anyway when bypassing validations' do
items = invalid_items_for_bulk_insertion
# it is not always possible to create invalid items
if items.any?
expect(target_class.bulk_insert!(items, validate: false)).to eq([])
expect(target_class.count).to eq(items.size)
end
end
end
end
end
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