element-web/test/settings/enums/ImageSize-test.ts

/*
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 { ImageSize, suggestedSize } from "../../../src/settings/enums/ImageSize";

describe("ImageSize", () => {
    describe("suggestedSize", () => {
        it("constrains width", () => {
            const size = suggestedSize(ImageSize.Normal, { w: 648, h: 162 });
            expect(size).toStrictEqual({ w: 324, h: 81 });
        });
        it("constrains height", () => {
            const size = suggestedSize(ImageSize.Normal, { w: 162, h: 648 });
            expect(size).toStrictEqual({ w: 81, h: 324 });
        });
        it("constrains width in large mode", () => {
            const size = suggestedSize(ImageSize.Large, { w: 2400, h: 1200 });
            expect(size).toStrictEqual({ w: 800, h: 400 });
        });
        it("returns max values if content size is not specified", () => {
            const size = suggestedSize(ImageSize.Normal, { w: null, h: null });
            expect(size).toStrictEqual({ w: 324, h: 324 });
        });
        it("returns integer values", () => {
            const size = suggestedSize(ImageSize.Normal, { w: 642, h: 350 }); // does not divide evenly
            expect(size).toStrictEqual({ w: 324, h: 176 });
        });
        it("returns integer values for portrait images", () => {
            const size = suggestedSize(ImageSize.Normal, { w: 720, h: 1280 });
            expect(size).toStrictEqual({ w: 182, h: 324 });
        });
    });
});