kong/spec/02-integration/04-admin_api/05-cache_routes_spec.lua

local helpers = require "spec.helpers"
local cjson = require "cjson"

for _, strategy in helpers.each_strategy() do
describe("Admin API /cache [#" .. strategy .. "]", function()
  local proxy_client
  local admin_client

  lazy_setup(function()
    local bp = helpers.get_db_utils(strategy, {
      "routes",
      "services",
      "plugins",
    }, {
      "cache"
    })

    local service = bp.services:insert()

    bp.routes:insert {
      hosts   = { "cache.com" },
      service = service,
    }

    bp.routes:insert {
      hosts   = { "cache.com" },
      methods = { "POST" },
      service = service,
    }

    bp.plugins:insert {
      name    = "cache",
      service = { id = service.id },
    }

    assert(helpers.start_kong({
      database   = strategy,
      nginx_conf = "spec/fixtures/custom_nginx.template",
      plugins = "cache",
    }))
    proxy_client = helpers.proxy_client()
    admin_client = helpers.admin_client()
  end)


  lazy_teardown(function()
    if admin_client then
      admin_client:close()
    end

    if proxy_client then
      proxy_client:close()
    end

    helpers.stop_kong()
  end)


  describe("/cache/:key", function()
    describe("GET", function()
      it("returns 404 if cache miss", function()
        local res = assert(admin_client:send {
          method = "GET",
          path = "/cache/_inexistent_",
        })
        assert.res_status(404, res)
      end)

      it("returns 200 and value if cache hit", function()
        -- populate cache
        local res = assert(proxy_client:send {
          method = "POST",
          path = "/",
          body = {
            cache_key = "my_key",
            cache_value = "my_value",
          },
          headers = {
            ["Host"] = "cache.com",
            ["Content-Type"] = "application/x-www-form-urlencoded",
          },
        })
        assert.res_status(200, res)

        local admin_res = assert(admin_client:send {
          method = "GET",
          path = "/cache/my_key",
        })
        local body = assert.res_status(200, admin_res)
        local json = cjson.decode(body)

        assert.equal("my_value", json.message)
      end)
    end)


    describe("DELETE", function()
      it("purges a cached value", function()
        -- populate cache
        local res = assert(proxy_client:send {
          method = "POST",
          path = "/",
          body = {
            cache_key = "purge_me",
            cache_value = "value_to_purge",
          },
          headers = {
            ["Host"] = "cache.com",
            ["Content-Type"] = "application/x-www-form-urlencoded",
          },
        })
        assert.res_status(200, res)

        -- delete cache
        local admin_res = assert(admin_client:send {
          method = "DELETE",
          path = "/cache/purge_me",
        })
        assert.res_status(204, admin_res)

        admin_res = assert(admin_client:send {
          method = "GET",
          path = "/cache/purge_me",
        })
        assert.res_status(404, admin_res)
      end)
    end)
  end)


  describe("DELETE", function()
    it("purges all cached values", function()
      -- populate cache
      local res = assert(proxy_client:send {
        method = "POST",
        path = "/",
        body = {
          cache_key = "key_1",
          cache_value = "value_to_purge",
        },
        headers = {
          ["Host"] = "cache.com",
          ["Content-Type"] = "application/x-www-form-urlencoded",
        },
      })
      assert.res_status(200, res)

      res = assert(proxy_client:send {
        method = "POST",
        path = "/",
        body = {
          cache_key = "key_2",
          cache_value = "value_to_purge",
        },
        headers = {
          ["Host"] = "cache.com",
          ["Content-Type"] = "application/x-www-form-urlencoded",
        },
      })
      assert.res_status(200, res)

      local admin_res = assert(admin_client:send {
        method = "DELETE",
        path = "/cache",
      })
      assert.res_status(204, admin_res)

      admin_res = assert(admin_client:send {
        method = "GET",
        path = "/cache/key_1",
      })
      assert.res_status(404, admin_res)

      admin_res = assert(admin_client:send {
        method = "GET",
        path = "/cache/key_2",
      })
      assert.res_status(404, admin_res)
    end)
  end)
end)
end