diff options
Diffstat (limited to 'spec/support/helpers/next_instance_of.rb')
-rw-r--r-- | spec/support/helpers/next_instance_of.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/spec/support/helpers/next_instance_of.rb b/spec/support/helpers/next_instance_of.rb new file mode 100644 index 00000000000..83c788c3d38 --- /dev/null +++ b/spec/support/helpers/next_instance_of.rb @@ -0,0 +1,28 @@ +# frozen_string_literal: true + +module NextInstanceOf + def expect_next_instance_of(klass, *new_args) + stub_new(expect(klass), *new_args) do |expectation| + yield(expectation) + end + end + + def allow_next_instance_of(klass, *new_args) + stub_new(allow(klass), *new_args) do |allowance| + yield(allowance) + end + end + + private + + def stub_new(target, *new_args) + receive_new = receive(:new) + receive_new.with(*new_args) if new_args.any? + + target.to receive_new.and_wrap_original do |method, *original_args| + method.call(*original_args).tap do |instance| + yield(instance) + end + end + end +end |