aboutsummaryrefslogtreecommitdiff
path: root/test/test-document.js
blob: 80b9719dc4a48de988c206e1574b31d2a48aa3b9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
/*
 * Copyright (C) 2020  Alex Yatskov <alex@foosoft.net>
 * Author: Alex Yatskov <alex@foosoft.net>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

const fs = require('fs');
const path = require('path');
const assert = require('assert');
const {JSDOM} = require('jsdom');
const {VM} = require('./yomichan-vm');


// DOMRect class definition
class DOMRect {
    constructor(x, y, width, height) {
        this._x = x;
        this._y = y;
        this._width = width;
        this._height = height;
    }

    get x() { return this._x; }
    get y() { return this._y; }
    get width() { return this._width; }
    get height() { return this._height; }
    get left() { return this._x + Math.min(0, this._width); }
    get right() { return this._x + Math.max(0, this._width); }
    get top() { return this._y + Math.min(0, this._height); }
    get bottom() { return this._y + Math.max(0, this._height); }
}


function createJSDOM(fileName) {
    const domSource = fs.readFileSync(fileName, {encoding: 'utf8'});
    const dom = new JSDOM(domSource);
    const document = dom.window.document;
    const window = dom.window;

    // Define innerText setter as an alias for textContent setter
    Object.defineProperty(window.HTMLDivElement.prototype, 'innerText', {
        set(value) { this.textContent = value; }
    });

    // Placeholder for feature detection
    document.caretRangeFromPoint = () => null;

    return dom;
}

function querySelectorChildOrSelf(element, selector) {
    return selector ? element.querySelector(selector) : element;
}

function getChildTextNodeOrSelf(dom, node) {
    if (node === null) { return null; }
    const Node = dom.window.Node;
    const childNode = node.firstChild;
    return (childNode !== null && childNode.nodeType === Node.TEXT_NODE ? childNode : node);
}

function getPrototypeOfOrNull(value) {
    try {
        return Object.getPrototypeOf(value);
    } catch (e) {
        return null;
    }
}

function findImposterElement(document) {
    // Finds the imposter element based on it's z-index style
    return document.querySelector('div[style*="2147483646"]>*');
}


async function testDocument1() {
    const dom = createJSDOM(path.join(__dirname, 'data', 'html', 'test-document1.html'));
    const window = dom.window;
    const document = window.document;
    const Node = window.Node;
    const Range = window.Range;

    const vm = new VM({document, window, Range, Node});
    vm.execute([
        'mixed/js/dom.js',
        'fg/js/source.js',
        'fg/js/document.js'
    ]);
    const [TextSourceRange, TextSourceElement, docRangeFromPoint, docSentenceExtract] = vm.get([
        'TextSourceRange',
        'TextSourceElement',
        'docRangeFromPoint',
        'docSentenceExtract'
    ]);

    try {
        await testDocumentTextScanningFunctions(dom, {docRangeFromPoint, docSentenceExtract, TextSourceRange, TextSourceElement});
        await testTextSourceRangeSeekFunctions(dom, {TextSourceRange});
    } finally {
        window.close();
    }
}

async function testDocumentTextScanningFunctions(dom, {docRangeFromPoint, docSentenceExtract, TextSourceRange, TextSourceElement}) {
    const document = dom.window.document;

    for (const testElement of document.querySelectorAll('.test[data-test-type=scan]')) {
        // Get test parameters
        let {
            elementFromPointSelector,
            caretRangeFromPointSelector,
            startNodeSelector,
            startOffset,
            endNodeSelector,
            endOffset,
            resultType,
            sentenceExtent,
            sentence,
            hasImposter
        } = testElement.dataset;

        const elementFromPointValue = querySelectorChildOrSelf(testElement, elementFromPointSelector);
        const caretRangeFromPointValue = querySelectorChildOrSelf(testElement, caretRangeFromPointSelector);
        const startNode = getChildTextNodeOrSelf(dom, querySelectorChildOrSelf(testElement, startNodeSelector));
        const endNode = getChildTextNodeOrSelf(dom, querySelectorChildOrSelf(testElement, endNodeSelector));

        startOffset = parseInt(startOffset, 10);
        endOffset = parseInt(endOffset, 10);
        sentenceExtent = parseInt(sentenceExtent, 10);

        assert.notStrictEqual(elementFromPointValue, null);
        assert.notStrictEqual(caretRangeFromPointValue, null);
        assert.notStrictEqual(startNode, null);
        assert.notStrictEqual(endNode, null);

        // Setup functions
        document.elementFromPoint = () => elementFromPointValue;

        document.caretRangeFromPoint = (x, y) => {
            const imposter = getChildTextNodeOrSelf(dom, findImposterElement(document));
            assert.strictEqual(!!imposter, hasImposter === 'true');

            const range = document.createRange();
            range.setStart(imposter ? imposter : startNode, startOffset);
            range.setEnd(imposter ? imposter : startNode, endOffset);

            // Override getClientRects to return a rect guaranteed to contain (x, y)
            range.getClientRects = () => [new DOMRect(x - 1, y - 1, 2, 2)];
            return range;
        };

        // Test docRangeFromPoint
        const source = docRangeFromPoint(0, 0, false);
        switch (resultType) {
            case 'TextSourceRange':
                assert.strictEqual(getPrototypeOfOrNull(source), TextSourceRange.prototype);
                break;
            case 'TextSourceElement':
                assert.strictEqual(getPrototypeOfOrNull(source), TextSourceElement.prototype);
                break;
            case 'null':
                assert.strictEqual(source, null);
                break;
            default:
                assert.ok(false);
                break;
        }
        if (source === null) { continue; }

        // Test docSentenceExtract
        const sentenceActual = docSentenceExtract(source, sentenceExtent).text;
        assert.strictEqual(sentenceActual, sentence);

        // Clean
        source.cleanup();
    }
}

async function testTextSourceRangeSeekFunctions(dom, {TextSourceRange}) {
    const document = dom.window.document;

    for (const testElement of document.querySelectorAll('.test[data-test-type=text-source-range-seek]')) {
        // Get test parameters
        let {
            seekNodeSelector,
            seekNodeIsText,
            seekOffset,
            seekLength,
            seekDirection,
            expectedResultNodeSelector,
            expectedResultNodeIsText,
            expectedResultOffset,
            expectedResultContent
        } = testElement.dataset;

        seekOffset = parseInt(seekOffset, 10);
        seekLength = parseInt(seekLength, 10);
        expectedResultOffset = parseInt(expectedResultOffset, 10);

        let seekNode = testElement.querySelector(seekNodeSelector);
        if (seekNodeIsText === 'true') {
            seekNode = seekNode.firstChild;
        }

        let expectedResultNode = testElement.querySelector(expectedResultNodeSelector);
        if (expectedResultNodeIsText === 'true') {
            expectedResultNode = expectedResultNode.firstChild;
        }

        const {node, offset, content} = (
            seekDirection === 'forward' ?
            TextSourceRange.seekForward(seekNode, seekOffset, seekLength) :
            TextSourceRange.seekBackward(seekNode, seekOffset, seekLength)
        );

        assert.strictEqual(node, expectedResultNode);
        assert.strictEqual(offset, expectedResultOffset);
        assert.strictEqual(content, expectedResultContent);
    }
}


async function main() {
    await testDocument1();
}


if (require.main === module) { main(); }