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Default to single-channel output from extractChannel #2658

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Lovell Fuller
2021-06-17 20:02:16 +01:00
parent d000f57773
commit c65de3fe6d
8 changed files with 32 additions and 19 deletions
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test/fixtures/expected/extract-alpha-16bit.jpg vendored
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9
test/unit/extractChannel.js
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@@ -57,8 +57,8 @@ describe('Image channel extraction', function () {
it('With colorspace conversion', function (done) {
const output = fixtures.path('output.extract-lch.jpg');
sharp(fixtures.inputJpg)
.toColourspace('lch')
.extractChannel(1)
.toColourspace('lch')
.resize(320, 240, { fastShrinkOnLoad: false })
.toFile(output, function (err, info) {
if (err) throw err;
@@ -70,12 +70,13 @@ describe('Image channel extraction', function () {
});
it('Alpha from 16-bit PNG', function (done) {
const output = fixtures.path('output.extract-alpha-16bit.jpg');
const output = fixtures.path('output.extract-alpha-16bit.png');
sharp(fixtures.inputPngWithTransparency16bit)
.resize(16)
.extractChannel(3)
.toFile(output, function (err, info) {
.toFile(output, function (err) {
if (err) throw err;
fixtures.assertMaxColourDistance(output, fixtures.expected('extract-alpha-16bit.jpg'));
fixtures.assertMaxColourDistance(output, fixtures.expected('extract-alpha-16bit.png'));
done();
});
});