A somewhat updated fork from GraphicsMagick for node
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var assert = require('assert')
var fs = require('fs')
module.exports = function (_, dir, finish, gm) {
var original = dir + '/original.jpg';
var result = dir + '/fromBuffer.png';
var buf = fs.readFileSync(original);
var m = gm(buf)
.rotate('red', 30);
var args = m.args();
assert.equal('convert', args[0]);
assert.equal('-', args[1]);
assert.equal('-background', args[2]);
assert.equal('red', args[3]);
assert.equal('-rotate', args[4]);
assert.equal(30, args[5]);
if (!gm.integration)
return finish();
m
.write(result, function crop (err) {
if (err) return finish(err);
// tolerance defaults to 0.4
gm.compare(original, result, function (err, equal) {
if (err) return finish(err);
assert.ok(equal);
// accepts tolerance argument
gm.compare(original, result, 0.1, function (err, equal, equality, raw) {
if (err) return finish(err);
assert.ok(!equal);
assert.ok(equality > 0.1);
assert.ok(raw);
finish();
})
})
});
}