gem 'rspec-openapi', group: :test

RSpec.describe 'Tables', type: :request do
  describe '#index' do
    it 'returns a list of tables' do
      get '/tables', params: { page: '1', per: '10' }, headers: { authorization: 'k0kubun' }
      expect(response.status).to eq(200)
    end

    it 'does not return tables if unauthorized' do
      get '/tables'
      expect(response.status).to eq(401)
    end
  end

  # ...
end

require 'rspec/openapi'

# Change the path to generate schema from `doc/openapi.yaml`
RSpec::OpenAPI.path = 'doc/schema.yaml'

# Change the output type to JSON
RSpec::OpenAPI.path = 'doc/schema.json'

# Or generate multiple partial schema files, given an RSpec example
RSpec::OpenAPI.path = -> (example) {
  case example.file_path
  when %r[spec/requests/api/v1/] then 'doc/openapi/v1.yaml'
  when %r[spec/requests/api/v2/] then 'doc/openapi/v2.yaml'
  else 'doc/openapi.yaml'
  end
}

# Disable generating `example`
RSpec::OpenAPI.enable_example = false

# Change `info.version`
RSpec::OpenAPI.application_version = '1.0.0'

# Set the info header details
RSpec::OpenAPI.info = {
  description: 'My beautiful API',
  license: {
    'name': 'Apache 2.0',
    'url': 'https://www.apache.org/licenses/LICENSE-2.0.html'
  }
}

# Set `headers` - generate parameters with headers for a request
RSpec::OpenAPI.request_headers = %w[X-Authorization-Token]

# Set `servers` - generate servers of a schema file
RSpec::OpenAPI.servers = [{ url: 'http://localhost:3000' }]

# Generate a comment on top of a schema file
RSpec::OpenAPI.comment = <<~EOS
  This file is auto-generated by rspec-openapi https://github.com/k0kubun/rspec-openapi

  When you write a spec in spec/requests, running the spec with `OPENAPI=1 rspec` will
  update this file automatically. You can also manually edit this file.
EOS

# Generate a custom description, given an RSpec example
RSpec::OpenAPI.description_builder = -> (example) { example.description }

# Change the example type(s) that will generate schema
RSpec::OpenAPI.example_types = %i[request]

RSpec.describe '/resources', type: :request, openapi: false do
  # ...
end

# or

RSpec.describe '/resources', type: :request do
  it 'returns a resource', openapi: false do
    # ...
  end
end

  describe 'GET /api/v1/posts', openapi: {
    summary: 'list all posts',
    description: 'list all posts ordered by pub_date',
    tags: %w[v1 posts],
  } do
    # ...
  end