mirror of https://github.com/vector-im/riot-web
80 lines
3.1 KiB
JavaScript
80 lines
3.1 KiB
JavaScript
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/*
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Copyright 2019 The Matrix.org Foundation C.I.C.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 EditorModel from "../../src/editor/model";
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import {createPartCreator} from "./mock";
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function createRenderer() {
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const render = (c) => {
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render.caret = c;
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render.count += 1;
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};
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render.count = 0;
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render.caret = null;
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return render;
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}
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describe('editor/position', function() {
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it('move first position backward in empty model', function() {
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const model = new EditorModel([], createPartCreator(), createRenderer());
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const pos = model.positionForOffset(0, true);
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const pos2 = pos.backwardsWhile(model, () => true);
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expect(pos).toBe(pos2);
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});
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it('move first position forwards in empty model', function() {
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const model = new EditorModel([], createPartCreator(), createRenderer());
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const pos = model.positionForOffset(0, true);
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const pos2 = pos.forwardsWhile(() => true);
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expect(pos).toBe(pos2);
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});
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it('move forwards within one part', function() {
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const pc = createPartCreator();
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const model = new EditorModel([pc.plain("hello")], pc, createRenderer());
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const pos = model.positionForOffset(1);
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let n = 3;
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const pos2 = pos.forwardsWhile(model, () => { n -= 1; return n >= 0; });
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expect(pos2.index).toBe(0);
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expect(pos2.offset).toBe(4);
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});
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it('move forwards crossing to other part', function() {
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const pc = createPartCreator();
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const model = new EditorModel([pc.plain("hello"), pc.plain(" world")], pc, createRenderer());
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const pos = model.positionForOffset(4);
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let n = 3;
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const pos2 = pos.forwardsWhile(model, () => { n -= 1; return n >= 0; });
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expect(pos2.index).toBe(1);
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expect(pos2.offset).toBe(2);
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});
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it('move backwards within one part', function() {
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const pc = createPartCreator();
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const model = new EditorModel([pc.plain("hello")], pc, createRenderer());
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const pos = model.positionForOffset(4);
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let n = 3;
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const pos2 = pos.backwardsWhile(model, () => { n -= 1; return n >= 0; });
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expect(pos2.index).toBe(0);
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expect(pos2.offset).toBe(1);
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});
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it('move backwards crossing to other part', function() {
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const pc = createPartCreator();
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const model = new EditorModel([pc.plain("hello"), pc.plain(" world")], pc, createRenderer());
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const pos = model.positionForOffset(7);
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let n = 3;
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const pos2 = pos.backwardsWhile(model, () => { n -= 1; return n >= 0; });
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expect(pos2.index).toBe(0);
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expect(pos2.offset).toBe(4);
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});
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});
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