element-web/test/unit-tests/settings/controllers/ThemeController-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 ThemeController from "../../../../src/settings/controllers/ThemeController";
import { SettingLevel } from "../../../../src/settings/SettingLevel";
import SettingsStore from "../../../../src/settings/SettingsStore";
import { DEFAULT_THEME } from "../../../../src/theme";

describe("ThemeController", () => {
    jest.spyOn(SettingsStore, "getValue").mockReturnValue([]);

    afterEach(() => {
        // reset
        ThemeController.isLogin = false;
    });

    it("returns null when calculatedValue is falsy", () => {
        const controller = new ThemeController();

        expect(
            controller.getValueOverride(
                SettingLevel.ACCOUNT,
                "$room:server",
                undefined /* calculatedValue */,
                SettingLevel.ACCOUNT,
            ),
        ).toEqual(null);
    });

    it("returns light when login flag is set", () => {
        const controller = new ThemeController();

        ThemeController.isLogin = true;

        expect(controller.getValueOverride(SettingLevel.ACCOUNT, "$room:server", "dark", SettingLevel.ACCOUNT)).toEqual(
            "light",
        );
    });

    it("returns default theme when value is not a valid theme", () => {
        const controller = new ThemeController();

        expect(
            controller.getValueOverride(SettingLevel.ACCOUNT, "$room:server", "my-test-theme", SettingLevel.ACCOUNT),
        ).toEqual(DEFAULT_THEME);
    });

    it("returns null when value is a valid theme", () => {
        const controller = new ThemeController();

        expect(controller.getValueOverride(SettingLevel.ACCOUNT, "$room:server", "dark", SettingLevel.ACCOUNT)).toEqual(
            null,
        );
    });
});