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b36237ddcb
Uses the recommended rules apart from complexity/useArrowFunction, which would affect about 1700 lines of code with little benefit right now. This is something that can be addressed over time.
99 lines
2.6 KiB
JavaScript
99 lines
2.6 KiB
JavaScript
// Copyright 2013 Lovell Fuller and others.
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// SPDX-License-Identifier: Apache-2.0
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const assert = require('node:assert');
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const sharp = require('../../');
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const fixtures = require('../fixtures');
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describe('Convolve', function () {
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it('specific convolution kernel 1', function (done) {
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sharp(fixtures.inputPngStripesV)
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.convolve({
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width: 3,
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height: 3,
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scale: 50,
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offset: 0,
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kernel: [
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10, 20, 10,
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0, 0, 0,
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10, 20, 10
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]
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})
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('png', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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fixtures.assertSimilar(fixtures.expected('conv-1.png'), data, done);
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});
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});
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it('specific convolution kernel 2', function (done) {
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sharp(fixtures.inputPngStripesH)
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.convolve({
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width: 3,
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height: 3,
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kernel: [
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1, 0, 1,
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2, 0, 2,
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1, 0, 1
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]
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})
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('png', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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fixtures.assertSimilar(fixtures.expected('conv-2.png'), data, done);
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});
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});
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it('horizontal Sobel operator', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320, 240)
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.convolve({
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width: 3,
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height: 3,
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kernel: [
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-1, 0, 1,
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-2, 0, 2,
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-1, 0, 1
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]
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})
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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fixtures.assertSimilar(fixtures.expected('conv-sobel-horizontal.jpg'), data, done);
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});
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});
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describe('invalid kernel specification', function () {
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it('missing', function () {
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assert.throws(function () {
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sharp(fixtures.inputJpg).convolve({});
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});
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});
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it('incorrect data format', function () {
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assert.throws(function () {
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sharp(fixtures.inputJpg).convolve({
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width: 3,
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height: 3,
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kernel: [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
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});
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});
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});
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it('incorrect dimensions', function () {
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assert.throws(function () {
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sharp(fixtures.inputJpg).convolve({
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width: 3,
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height: 4,
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kernel: [1, 2, 3, 4, 5, 6, 7, 8, 9]
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});
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});
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});
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});
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});
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