48 lines
1.7 KiB
JavaScript
48 lines
1.7 KiB
JavaScript
|
'use strict';
|
||
|
|
||
|
var PNG = require('pngjs').PNG,
|
||
|
fs = require('fs'),
|
||
|
test = require('tap').test,
|
||
|
path = require('path'),
|
||
|
match = require('../.');
|
||
|
|
||
|
diffTest('1a', '1b', '1diff', 0.05, false, 143);
|
||
|
diffTest('2a', '2b', '2diff', 0.05, false, 12439);
|
||
|
diffTest('3a', '3b', '3diff', 0.05, false, 212);
|
||
|
diffTest('4a', '4b', '4diff', 0.05, false, 36089);
|
||
|
|
||
|
function diffTest(imgPath1, imgPath2, diffPath, threshold, includeAA, expectedMismatch) {
|
||
|
var name = 'comparing ' + imgPath1 + ' to ' + imgPath2 +
|
||
|
', threshold: ' + threshold + ', includeAA: ' + includeAA;
|
||
|
|
||
|
test(name, function (t) {
|
||
|
var img1 = readImage(imgPath1, function () {
|
||
|
var img2 = readImage(imgPath2, function () {
|
||
|
var expectedDiff = readImage(diffPath, function () {
|
||
|
var diff = new PNG({width: img1.width, height: img1.height});
|
||
|
|
||
|
var mismatch = match(img1.data, img2.data, diff.data, diff.width, diff.height, {
|
||
|
threshold: threshold,
|
||
|
includeAA: includeAA
|
||
|
});
|
||
|
|
||
|
var mismatch2 = match(img1.data, img2.data, null, diff.width, diff.height, {
|
||
|
threshold: threshold,
|
||
|
includeAA: includeAA
|
||
|
});
|
||
|
|
||
|
t.same(diff.data, expectedDiff.data, 'diff image');
|
||
|
t.same(mismatch, expectedMismatch, 'number of mismatched pixels');
|
||
|
t.same(mismatch, mismatch2, 'number of mismatched pixels');
|
||
|
|
||
|
t.end();
|
||
|
});
|
||
|
});
|
||
|
});
|
||
|
});
|
||
|
}
|
||
|
|
||
|
function readImage(name, done) {
|
||
|
return fs.createReadStream(path.join(__dirname, '/fixtures/' + name + '.png')).pipe(new PNG()).on('parsed', done);
|
||
|
}
|