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265
test/unit/editor_spec.js
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265
test/unit/editor_spec.js
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/* Copyright 2022 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import {
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CommandManager,
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KeyboardManager,
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} from "../../src/display/editor/tools.js";
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import { FeatureTest } from "../../src/shared/util.js";
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import { SignatureExtractor } from "../../src/display/editor/drawers/signaturedraw.js";
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describe("editor", function () {
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describe("Command Manager", function () {
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it("should check undo/redo", function () {
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const manager = new CommandManager(4);
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let x = 0;
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const makeDoUndo = n => ({ cmd: () => (x += n), undo: () => (x -= n) });
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manager.add({ ...makeDoUndo(1), mustExec: true });
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expect(x).toEqual(1);
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manager.add({ ...makeDoUndo(2), mustExec: true });
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expect(x).toEqual(3);
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manager.add({ ...makeDoUndo(3), mustExec: true });
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expect(x).toEqual(6);
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manager.undo();
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expect(x).toEqual(3);
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manager.undo();
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expect(x).toEqual(1);
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manager.undo();
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expect(x).toEqual(0);
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manager.undo();
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expect(x).toEqual(0);
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manager.redo();
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expect(x).toEqual(1);
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manager.redo();
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expect(x).toEqual(3);
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manager.redo();
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expect(x).toEqual(6);
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manager.redo();
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expect(x).toEqual(6);
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manager.undo();
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expect(x).toEqual(3);
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manager.redo();
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expect(x).toEqual(6);
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});
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});
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it("should hit the limit of the manager", function () {
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const manager = new CommandManager(3);
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let x = 0;
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const makeDoUndo = n => ({ cmd: () => (x += n), undo: () => (x -= n) });
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manager.add({ ...makeDoUndo(1), mustExec: true }); // 1
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manager.add({ ...makeDoUndo(2), mustExec: true }); // 3
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manager.add({ ...makeDoUndo(3), mustExec: true }); // 6
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manager.add({ ...makeDoUndo(4), mustExec: true }); // 10
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expect(x).toEqual(10);
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manager.undo();
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manager.undo();
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expect(x).toEqual(3);
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manager.undo();
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expect(x).toEqual(1);
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manager.undo();
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expect(x).toEqual(1);
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manager.redo();
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manager.redo();
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expect(x).toEqual(6);
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manager.add({ ...makeDoUndo(5), mustExec: true });
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expect(x).toEqual(11);
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});
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it("should check signature compression/decompression", async () => {
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let gen = n => new Float32Array(crypto.getRandomValues(new Uint16Array(n)));
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let outlines = [102, 28, 254, 4536, 10, 14532, 512].map(gen);
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const signature = {
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outlines,
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areContours: false,
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thickness: 1,
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width: 123,
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height: 456,
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};
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let compressed = await SignatureExtractor.compressSignature(signature);
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let decompressed = await SignatureExtractor.decompressSignature(compressed);
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expect(decompressed).toEqual(signature);
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signature.thickness = 2;
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compressed = await SignatureExtractor.compressSignature(signature);
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decompressed = await SignatureExtractor.decompressSignature(compressed);
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expect(decompressed).toEqual(signature);
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signature.areContours = true;
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compressed = await SignatureExtractor.compressSignature(signature);
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decompressed = await SignatureExtractor.decompressSignature(compressed);
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expect(decompressed).toEqual(signature);
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// Numbers are small enough to be compressed with Uint8Array.
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gen = n =>
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new Float32Array(
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crypto.getRandomValues(new Uint8Array(n)).map(x => x / 10)
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);
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outlines = [100, 200, 300, 10, 80].map(gen);
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signature.outlines = outlines;
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compressed = await SignatureExtractor.compressSignature(signature);
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decompressed = await SignatureExtractor.decompressSignature(compressed);
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expect(decompressed).toEqual(signature);
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// Numbers are large enough to be compressed with Uint16Array.
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gen = n =>
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new Float32Array(
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crypto.getRandomValues(new Uint16Array(n)).map(x => x / 10)
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);
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outlines = [100, 200, 300, 10, 80].map(gen);
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signature.outlines = outlines;
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compressed = await SignatureExtractor.compressSignature(signature);
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decompressed = await SignatureExtractor.decompressSignature(compressed);
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expect(decompressed).toEqual(signature);
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});
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describe("Keyboard Manager", function () {
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function makeEvent(props) {
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return {
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altKey: false,
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ctrlKey: false,
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metaKey: false,
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shiftKey: false,
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preventDefault() {},
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stopPropagation() {},
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...props,
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};
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}
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function withPlatform(isMac, callback) {
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const descriptor = Object.getOwnPropertyDescriptor(
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FeatureTest,
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"platform"
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);
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Object.defineProperty(FeatureTest, "platform", {
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value: { isMac },
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configurable: true,
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});
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try {
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callback();
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} finally {
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Object.defineProperty(FeatureTest, "platform", descriptor);
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}
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}
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it("should match a shortcut by event.key", function () {
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let called = 0;
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const manager = new KeyboardManager([[["ctrl+a"], () => called++]]);
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manager.exec(null, makeEvent({ key: "a", code: "KeyA", ctrlKey: true }));
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expect(called).toEqual(1);
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});
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it("should not fire when the modifiers don't match", function () {
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let called = 0;
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const manager = new KeyboardManager([[["ctrl+a"], () => called++]]);
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manager.exec(null, makeEvent({ key: "a", code: "KeyA", metaKey: true }));
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expect(called).toEqual(0);
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});
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it("should fall back to event.code on a non-Latin layout", function () {
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let called = 0;
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const manager = new KeyboardManager([[["ctrl+a"], () => called++]]);
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manager.exec(null, makeEvent({ key: "ф", code: "KeyA", ctrlKey: true }));
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expect(called).toEqual(1);
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});
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it("should not remap a Latin letter via event.code", function () {
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let called = 0;
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const manager = new KeyboardManager([[["ctrl+q"], () => called++]]);
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manager.exec(null, makeEvent({ key: "a", code: "KeyQ", ctrlKey: true }));
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expect(called).toEqual(0);
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manager.exec(null, makeEvent({ key: "q", code: "KeyA", ctrlKey: true }));
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expect(called).toEqual(1);
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});
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it("should match an uppercase event.key (e.g. shift on mac)", function () {
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let called = 0;
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const manager = new KeyboardManager([
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[["ctrl+shift+z", "ctrl+shift+Z"], () => called++],
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]);
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manager.exec(
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null,
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makeEvent({ key: "Z", code: "KeyZ", ctrlKey: true, shiftKey: true })
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);
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expect(called).toEqual(1);
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});
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it("should use the mac+ shortcut on macOS", function () {
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withPlatform(true, () => {
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let called = 0;
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const manager = new KeyboardManager([
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[["ctrl+a", "mac+meta+a"], () => called++],
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]);
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manager.exec(
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null,
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makeEvent({ key: "a", code: "KeyA", metaKey: true })
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);
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expect(called).toEqual(1);
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manager.exec(
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null,
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makeEvent({ key: "a", code: "KeyA", ctrlKey: true })
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);
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expect(called).toEqual(1);
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});
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});
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it("should use the bare shortcut on non-macOS", function () {
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withPlatform(false, () => {
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let called = 0;
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const manager = new KeyboardManager([
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[["ctrl+a", "mac+meta+a"], () => called++],
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]);
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manager.exec(
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null,
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makeEvent({ key: "a", code: "KeyA", ctrlKey: true })
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);
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expect(called).toEqual(1);
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manager.exec(
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null,
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makeEvent({ key: "a", code: "KeyA", metaKey: true })
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);
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expect(called).toEqual(1);
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});
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});
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});
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});
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