You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: static_caching_spec.rb
    path of file: ./repos/yard/spec/server
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require File.dirname(__FILE__) + '/spec_helper'

RSpec.describe YARD::Server::StaticCaching do
  include StaticCaching

  describe "#check_static_cache" do
    def adapter; @adapter ||= mock_adapter end
    def request; @request ||= MockRequest.new end

    it "returns nil if document root is not set" do
      adapter.document_root = nil
      expect(check_static_cache).to be nil
    end

    it "reads a file from document root if path matches file on system" do
      request.path_info = '/hello/world.html'
      expect(File).to receive(:file?).with('/public/hello/world.html').and_return(true)
      expect(File).to receive(:open).with('/public/hello/world.html', anything).and_return('body')
      s, _, b = *check_static_cache
      expect(s).to eq 200
      expect(b).to eq ["body"]
    end

    it "reads a file if path matches file on system + .html" do
      request.path_info = '/hello/world'
      expect(File).to receive(:file?).with('/public/hello/world.html').and_return(true)
      expect(File).to receive(:open).with('/public/hello/world.html', anything).and_return('body')
      s, _, b = *check_static_cache
      expect(s).to eq 200
      expect(b).to eq ["body"]
    end

    it "returns nil if no matching f
    
    def adapter; @adapter ||= mock_adapter end
    def request; @request ||= MockRequest.new end

    it "returns nil if document root is not set" do
      adapter.document_root = nil
      expect(check_static_cache).to be nil
    end

    it "reads a file from document root if path matches file on system" do
      request.path_info = '/hello/world.html'
      expect(File).to receive(:file?).with('/public/hello/world.html').and_return(true)
      expect(File).to receive(:open).with('/public/hello/world.html', anything).and_return('body')
      s, _, b = *check_static_cache
      expect(s).to eq 200
      expect(b).to eq ["body"]
    end

    it "reads a file if path matches file on system + .html" do
      request.path_info = '/hello/world'
      expect(File).to receive(:file?).with('/public/hello/world.html').and_return(true)
      expect(File).to receive(:open).with('/public/hello/world.html', anything).and_return('body')
      s, _, b = *check_static_cache
      expect(s).to eq 200
      expect(b).to eq ["body"]
    end

    it "returns nil if no matching file is found" do
      request.path_info = '/hello/foo'
      expect(File).to receive(:file?).with('/public/hello/foo.html').and_return(false)
      expect(check_static_cache).to eq nil
    end

    it "adds mount point to cache location" do
      request.path_info = '/hello/world.html'
      request.script_name = '/mount/point'
      expect(File).to receive(:file?).with('/public/mount/point/hello/world.html').and_return(false)
      expect(check_static_cache).to eq nil
    end
  end
end