element-web/test/unit-tests/components/structures/ContextMenu-test.ts

/*
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
Please see LICENSE files in the repository root for full details.
*/

import { toLeftOf, toLeftOrRightOf, toRightOf } from "../../../src/components/structures/ContextMenu";
import UIStore from "../../../src/stores/UIStore";

describe("ContextMenu", () => {
    const rect = new DOMRect();
    // @ts-ignore
    rect.left = 23;
    // @ts-ignore
    rect.right = 46;
    // @ts-ignore
    rect.top = 42;
    rect.width = 640;
    rect.height = 480;

    beforeEach(() => {
        window.scrollX = 31;
        window.scrollY = 41;
        UIStore.instance.windowWidth = 1280;
    });

    describe("toLeftOf", () => {
        it("should return the correct positioning", () => {
            expect(toLeftOf(rect)).toEqual({
                chevronOffset: 12,
                right: 1285, // 1280 - 23 + 31 - 3
                top: 303, // 42 + (480 / 2) + 41 - (12 + 8)
            });
        });
    });

    describe("toRightOf", () => {
        it("should return the correct positioning", () => {
            expect(toRightOf(rect)).toEqual({
                chevronOffset: 12,
                left: 80, // 46 + 31 + 3
                top: 303, // 42 + (480 / 2) + 41 - (12 + 8)
            });
        });
    });

    describe("toLeftOrRightOf", () => {
        describe("when there is more space to the right", () => {
            // default case from test setup

            it("should return a position to the right", () => {
                expect(toLeftOrRightOf(rect)).toEqual({
                    chevronOffset: 12,
                    left: 80, // 46 + 31 + 3
                    top: 303, // 42 + (480 / 2) + 41 - (12 + 8)
                });
            });
        });

        describe("when there is more space to the left", () => {
            beforeEach(() => {
                // @ts-ignore
                rect.left = 500;
                // @ts-ignore
                rect.right = 1000;
            });

            it("should return a position to the left", () => {
                expect(toLeftOrRightOf(rect)).toEqual({
                    chevronOffset: 12,
                    right: 808, // 1280 - 500 + 31 - 3
                    top: 303, // 42 + (480 / 2) + 41 - (12 + 8)
                });
            });
        });
    });
});