element-web/test/unit-tests/components/structures/PictureInPictureDragger-test.tsx

/*
Copyright 2024 New Vector Ltd.
Copyright 2022 The Matrix.org Foundation C.I.C.

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
Please see LICENSE files in the repository root for full details.
*/

import React, { type MouseEventHandler } from "react";
import { screen, render, type RenderResult } from "jest-matrix-react";
import userEvent from "@testing-library/user-event";

import PictureInPictureDragger, {
    type CreatePipChildren,
} from "../../../../src/components/structures/PictureInPictureDragger";

describe("PictureInPictureDragger", () => {
    let renderResult: RenderResult;

    const mkContent1: Array<CreatePipChildren> = [
        () => {
            return <div>content 1</div>;
        },
    ];

    const mkContent2: Array<CreatePipChildren> = [
        () => {
            return (
                <div>
                    content 2<br />
                    content 2.2
                </div>
            );
        },
    ];

    describe("when rendering the dragger with PiP content 1", () => {
        beforeEach(() => {
            renderResult = render(<PictureInPictureDragger draggable={true}>{mkContent1}</PictureInPictureDragger>);
        });

        it("should render the PiP content", () => {
            expect(renderResult.container).toMatchSnapshot("pip-content-1");
        });

        describe("and rerendering PiP content 1", () => {
            beforeEach(() => {
                renderResult.rerender(<PictureInPictureDragger draggable={true}>{mkContent1}</PictureInPictureDragger>);
            });

            it("should not change the PiP content", () => {
                expect(renderResult.container).toMatchSnapshot("pip-content-1");
            });
        });

        describe("and rendering PiP content 2", () => {
            beforeEach(() => {
                renderResult.rerender(<PictureInPictureDragger draggable={true}>{mkContent2}</PictureInPictureDragger>);
            });

            it("should update the PiP content", () => {
                expect(renderResult.container).toMatchSnapshot();
            });
        });
    });

    describe("when rendering the dragger with PiP content 1 and 2", () => {
        beforeEach(() => {
            renderResult = render(
                <PictureInPictureDragger draggable={true}>{[...mkContent1, ...mkContent2]}</PictureInPictureDragger>,
            );
        });

        it("should render both contents", () => {
            expect(renderResult.container).toMatchSnapshot();
        });
    });

    describe("when rendering the dragger", () => {
        let clickSpy: jest.Mocked<MouseEventHandler>;
        let target: HTMLElement;

        beforeEach(() => {
            clickSpy = jest.fn();
            render(
                <PictureInPictureDragger draggable={true}>
                    {[
                        ({ onStartMoving }) => (
                            // eslint-disable-next-line jsx-a11y/click-events-have-key-events
                            <div onMouseDown={onStartMoving} onClick={clickSpy}>
                                Hello
                            </div>
                        ),
                    ]}
                </PictureInPictureDragger>,
            );
            target = screen.getByText("Hello");
        });

        it("and clicking without a drag motion, it should pass the click to children", async () => {
            await userEvent.pointer([{ keys: "[MouseLeft>]", target }, { keys: "[/MouseLeft]" }]);
            expect(clickSpy).toHaveBeenCalled();
        });

        it("and clicking with a drag motion above the threshold of 5px, it should not pass the click to children", async () => {
            await userEvent.pointer([{ keys: "[MouseLeft>]", target }, { coords: { x: 60, y: 2 } }, "[/MouseLeft]"]);
            expect(clickSpy).not.toHaveBeenCalled();
        });

        it("and clickign with a drag motion below the threshold of 5px, it should pass the click to the children", async () => {
            await userEvent.pointer([{ keys: "[MouseLeft>]", target }, { coords: { x: 4, y: 4 } }, "[/MouseLeft]"]);
            expect(clickSpy).toHaveBeenCalled();
        });
    });
});