我一直在尝试从以前的开发人员那里进行serverspec测试，并在运行[HttpGet("cars", Name = "GetCars")]
[ProducesResponseType(typeof(IEnumerable<Car>), 200)]
public async Task<IActionResult> GetCars()
{
var cars = _repo.GetCars().Where(c => c.ShouldSerializeCar );
retur Ok(cars);
}
时收到以下错误消息：
rake spec试图调试但没有成功，我怀疑下面的spec_helper.rb中的代码由于使用Traceback (most recent call last):
9: from /usr/local/rvm/gems/ruby-2.6.3/gems/rspec-core-2.99.2/lib/rspec/core/runner.rb:17:in `block in autorun'
8: from /usr/local/rvm/gems/ruby-2.6.3/gems/rspec-core-2.99.2/lib/rspec/core/runner.rb:103:in `run'
7: from /usr/local/rvm/gems/ruby-2.6.3/gems/rspec-core-2.99.2/lib/rspec/core/command_line.rb:18:in `run'
6: from /usr/local/rvm/gems/ruby-2.6.3/gems/rspec-core-2.99.2/lib/rspec/core/configuration.rb:1065:in `load_spec_files'
5: from /usr/local/rvm/gems/ruby-2.6.3/gems/rspec-core-2.99.2/lib/rspec/core/configuration.rb:1065:in `each'
4: from /usr/local/rvm/gems/ruby-2.6.3/gems/rspec-core-2.99.2/lib/rspec/core/configuration.rb:1065:in `block in load_spec_files'
3: from /usr/local/rvm/gems/ruby-2.6.3/gems/rspec-core-2.99.2/lib/rspec/core/configuration.rb:1065:in `load'
2: from /home/ec2-user/.../test/spec/.../sample_spec.rb:1:in `<top (required)>'
1: from /home/ec2-user/.../test/spec/.../sample_spec.rb:1:in `require'
/home/ec2-user/.../test/spec/spec_helper.rb:4:in `<top (required)>': undefined method `set' for main:Object (NoMethodError)
而应归咎于我，但是由于我对Ruby的经验不足，所以未能找到解决方案。下面是它的一个片段。另外，我还尝试添加set，但没有成功。
require 'set'