af41a5cb49
The previous version was maybe functional but definitely painful to maintain (maybe more efficient... I don't know) so this patch aims to simplify it and it adds some basic unit tests.
120 lines
3.0 KiB
JavaScript
120 lines
3.0 KiB
JavaScript
/* 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 { CommandManager } from "../../src/display/editor/tools.js";
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import { fitCurve } from "../../src/display/editor/ink.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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describe("fitCurve", function () {
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it("should return a function", function () {
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expect(typeof fitCurve).toEqual("function");
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});
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it("should compute an Array of bezier curves", function () {
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const bezier = fitCurve(
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[
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[1, 2],
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[4, 5],
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],
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30,
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null
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);
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expect(bezier).toEqual([
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[
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[1, 2],
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[2, 3],
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[3, 4],
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[4, 5],
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],
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]);
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});
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});
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});
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