kong/spec/03-plugins/31-proxy-cache/01-schema_spec.lua

local proxy_cache_schema = require "kong.plugins.proxy-cache.schema"
local v = require("spec.helpers").validate_plugin_config_schema

describe("proxy-cache schema", function()
  it("accepts a minimal config", function()
    local entity, err = v({
      strategy = "memory",
    }, proxy_cache_schema)

    assert.is_nil(err)
    assert.is_truthy(entity)
  end)

  it("defines default content-type values", function()
    local config = {strategy = "memory"}
    local entity, err = v(config, proxy_cache_schema)
    assert.is_nil(err)
    assert.is_truthy(entity)
    assert.same(entity.config.content_type, {"text/plain", "application/json"})
  end)

  it("accepts a config with custom values", function()
    local entity, err = v({
      strategy = "memory",
      response_code = { 200, 301 },
      request_method = { "GET" },
      content_type = { "application/json" },
    }, proxy_cache_schema)

    assert.is_nil(err)
    assert.is_truthy(entity)
  end)

  it("accepts an array of numbers as strings", function()
    local entity, err = v({
      strategy = "memory",
      response_code = {123, 200},
    }, proxy_cache_schema)

    assert.is_nil(err)
    assert.is_truthy(entity)
  end)

  it("errors with invalid response_code", function()
    local entity, err = v({
      strategy = "memory",
      response_code = { 99 },
    }, proxy_cache_schema)

    assert.same({ "value should be between 100 and 900" }, err.config.response_code)
    assert.is_falsy(entity)
  end)

  it("errors if response_code is an empty array", function()
    local entity, err = v({
      strategy = "memory",
      response_code = {},
    }, proxy_cache_schema)

    assert.same("length must be at least 1", err.config.response_code)
    assert.is_falsy(entity)
  end)

  it("errors if response_code is a string", function()
    local entity, err = v({
      strategy = "memory",
      response_code = "",
    }, proxy_cache_schema)

    assert.same("expected an array", err.config.response_code)
    assert.is_falsy(entity)
  end)

  it("errors if response_code has non-numeric values", function()
    local entity, err = v({
      strategy = "memory",
      response_code = {true, "alo", 123},
    }, proxy_cache_schema)

    assert.same({ "expected an integer", "expected an integer" },
                err.config.response_code)
    assert.is_falsy(entity)
  end)

  it("errors if response_code has float value", function()
    local entity, err = v({
      strategy = "memory",
      response_code = {123.5},
    }, proxy_cache_schema)

    assert.same({ "expected an integer" }, err.config.response_code)
    assert.is_falsy(entity)
  end)

  it("errors with invalid ttl", function()
    local entity, err = v({
      strategy = "memory",
      cache_ttl = -1
    }, proxy_cache_schema)

    assert.same("value must be greater than 0", err.config.cache_ttl)
    assert.is_falsy(entity)
  end)

  it("supports vary_query_params values", function()
    local entity, err = v({
      strategy = "memory",
      vary_query_params = { "foo" },
    }, proxy_cache_schema)

    assert.is_nil(err)
    assert.is_truthy(entity)
  end)

  it("supports vary_headers values", function()
    local entity, err = v({
      strategy = "memory",
      vary_headers = { "foo" },
    }, proxy_cache_schema)

    assert.is_nil(err)
    assert.is_truthy(entity)
  end)
end)