/* Copyright 2022 The Matrix.org Foundation C.I.C. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ import SettingsStore from "../src/settings/SettingsStore"; import { enumerateThemes, setTheme } from "../src/theme"; describe("theme", () => { describe("setTheme", () => { let lightTheme: HTMLStyleElement; let darkTheme: HTMLStyleElement; let spyQuerySelectorAll: jest.MockInstance<NodeListOf<Element>, [selectors: string]>; let spyClassList: jest.SpyInstance<void, string[], any>; beforeEach(() => { const styles = [ { dataset: { mxTheme: "light", }, disabled: true, href: "urlLight", onload: (): void => void 0, } as unknown as HTMLStyleElement, { dataset: { mxTheme: "dark", }, disabled: true, href: "urlDark", onload: (): void => void 0, } as unknown as HTMLStyleElement, ]; lightTheme = styles[0]; darkTheme = styles[1]; jest.spyOn(document.body, "style", "get").mockReturnValue([] as any); spyQuerySelectorAll = jest.spyOn(document, "querySelectorAll").mockReturnValue(styles as any); spyClassList = jest.spyOn(document.body.classList, "add"); }); afterEach(() => { jest.restoreAllMocks(); jest.useRealTimers(); }); it("should switch theme on onload call", async () => { // When await new Promise((resolve) => { setTheme("light").then(resolve); lightTheme.onload!({} as Event); }); // Then expect(spyQuerySelectorAll).toHaveBeenCalledWith("[data-mx-theme]"); expect(spyQuerySelectorAll).toHaveBeenCalledTimes(1); expect(lightTheme.disabled).toBe(false); expect(darkTheme.disabled).toBe(true); expect(spyClassList).toHaveBeenCalledWith("cpd-theme-light"); }); it("should switch to dark", async () => { // When await new Promise((resolve) => { setTheme("dark").then(resolve); darkTheme.onload!({} as Event); }); // Then expect(spyClassList).toHaveBeenCalledWith("cpd-theme-dark"); }); it("should reject promise on onerror call", () => { return expect( new Promise((resolve) => { setTheme("light").catch((e) => resolve(e)); lightTheme.onerror!("call onerror"); }), ).resolves.toBe("call onerror"); }); it("should switch theme if CSS are preloaded", async () => { // When jest.spyOn(document, "styleSheets", "get").mockReturnValue([lightTheme] as any); await setTheme("light"); // Then expect(lightTheme.disabled).toBe(false); expect(darkTheme.disabled).toBe(true); }); it("should switch theme if CSS is loaded during pooling", async () => { // When jest.useFakeTimers(); await new Promise((resolve) => { setTheme("light").then(resolve); jest.spyOn(document, "styleSheets", "get").mockReturnValue([lightTheme] as any); jest.advanceTimersByTime(200); }); // Then expect(lightTheme.disabled).toBe(false); expect(darkTheme.disabled).toBe(true); }); it("should reject promise if pooling maximum value is reached", () => { jest.useFakeTimers(); return new Promise((resolve) => { setTheme("light").catch(resolve); jest.advanceTimersByTime(200 * 10); }); }); }); describe("enumerateThemes", () => { it("should return a list of themes", () => { jest.spyOn(SettingsStore, "getValue").mockReturnValue([{ name: "pink" }]); expect(enumerateThemes()).toEqual({ "light": "Light", "light-high-contrast": "Light high contrast", "dark": "Dark", "custom-pink": "pink", }); }); it("should be robust to malformed custom_themes values", () => { jest.spyOn(SettingsStore, "getValue").mockReturnValue([23]); expect(enumerateThemes()).toEqual({ "light": "Light", "light-high-contrast": "Light high contrast", "dark": "Dark", }); }); }); });