-- Upstream: https://github.com/facebook/react/blob/16654436039dd8f16a63928e71081c7745872e8f/packages/react-test-renderer/src/__tests__/ReactTestRenderer-test.internal.js
--  * Copyright (c) Facebook, Inc. and its affiliates.
--  *
--  * This source code is licensed under the MIT license found in the
--  * LICENSE file in the root directory of this source tree.
--  *
--  * @emails react-core
--  * @jest-environment node
--  */

-- !strict
local Packages = script.Parent.Parent.Parent

local React
local ReactTestRenderer

local JestGlobals = require(Packages.Dev.JestGlobals)
local beforeEach = JestGlobals.beforeEach
local jestExpect = JestGlobals.expect
local describe = JestGlobals.describe
local it = JestGlobals.it
local jest = JestGlobals.jest

describe("ReactTestRenderer", function()
	beforeEach(function()
		jest.resetModules()

		React = require(Packages.React)
		ReactTestRenderer = require(Packages.ReactTestRenderer)
	end)
	it("renders a component with React.Change, React.Event, React.Tag props", function()
		local onTextChangedCallback = function() end

		local onActivated = function() end

		local function Link()
			return React.createElement("a", {
				role = "link",
				[React.Change.Text] = onTextChangedCallback,
				[React.Event.Activated] = onActivated,
				[React.Tag] = "componentA",
			})
		end

		local renderer = ReactTestRenderer.create(React.createElement(Link))

		jestExpect(renderer.toJSON()).toEqual({
			type = "a",
			props = {
				role = "link",
				[React.Change.Text] = onTextChangedCallback,
				[React.Event.Activated] = onActivated,
				[React.Tag] = "componentA",
			},
			children = nil,
		})
	end)

	it("Can drive change and event signals from a ref", function()
		local ref = React.createRef()
		local textCallback = jest.fn()
		local clickCallback = jest.fn()

		local RootComponent = React.Component:extend("RootComponent")

		function RootComponent:render()
			return React.createElement("Frame", {}, {
				B = React.createElement("Frame", {
					ref = self.props.childRef,
					[React.Change.Text] = self.props.textCallback,
					[React.Event.Activated] = self.props.clickCallback,
				}),
			})
		end

		local renderer = ReactTestRenderer.create(
			React.createElement(RootComponent, {
				childRef = ref,
				textCallback = textCallback,
				clickCallback = clickCallback,
			}),
			{
				createNodeMock = function(element)
					return element
				end,
			}
		)

		ref.current.props[React.Change.Text]("Changed Text")
		jestExpect(textCallback).toHaveBeenCalledWith("Changed Text")

		ref.current.props[React.Event.Activated]()
		ref.current.props[React.Event.Activated]()
		jestExpect(clickCallback).toHaveBeenCalledTimes(2)

		renderer.unmount()
		jestExpect(ref.current).never.toBeDefined()
	end)

	it("Collects tagged instances", function()
		local renderer = ReactTestRenderer.create(React.createElement("div", {
			Name = "A",
			[React.Tag] = "foo",
			key = "A",
		}, {
			B = React.createElement("div", {
				[React.Tag] = "foo",
			}),
			C = React.createElement("div", {
				[React.Tag] = "bar,foo",
			}),
			D = React.createElement("div", {
				[React.Tag] = "bar,foo",
			}, {
				E = React.createElement("div", {
					[React.Tag] = "bar",
				}),
			}),
		}))

		local barInstances = renderer.getInstancesForTag("bar")
		jestExpect(#barInstances).toEqual(3)

		local fooInstances = renderer.getInstancesForTag("foo")
		jestExpect(#fooInstances).toEqual(4)

		local bazInstances = renderer.getInstancesForTag("baz")
		jestExpect(#bazInstances).toEqual(0)

		-- Should update tags when components update
		renderer.update(React.createElement("div", {
			Name = "A",
			[React.Tag] = "foo",
			key = "A",
		}, {
			B = React.createElement("div", {
				[React.Tag] = "bar,baz",
			}),
			C = React.createElement("div", {
				[React.Tag] = "baz",
			}),
		}))

		fooInstances = renderer.getInstancesForTag("foo")
		jestExpect(#fooInstances).toEqual(1)

		barInstances = renderer.getInstancesForTag("bar")
		jestExpect(#barInstances).toEqual(1)

		bazInstances = renderer.getInstancesForTag("baz")
		jestExpect(#bazInstances).toEqual(2)

		-- Should remove tags when unmounting
		renderer.unmount()
		fooInstances = renderer.getInstancesForTag("foo")
		jestExpect(#fooInstances).toEqual(0)

		barInstances = renderer.getInstancesForTag("bar")
		jestExpect(#barInstances).toEqual(0)

		bazInstances = renderer.getInstancesForTag("baz")
		jestExpect(#bazInstances).toEqual(0)
	end)
end)