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Allow use of extend with greyscale input (#623)

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This commit is contained in:
Patrick Paskaris
2016-11-14 17:09:43 -05:00
committed by Lovell Fuller
parent dd9d66ef20
commit 6ccccf8c39
3 changed files with 30 additions and 5 deletions
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test/fixtures/expected/extend-2channel.png vendored Normal file
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15
test/unit/extend.js
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@@ -60,4 +60,19 @@ describe('Extend', function () {
fixtures.assertSimilar(fixtures.expected('addAlphaChanelBeforeExtend.png'), data, done);
});
});
it('PNG with 2 channels', function (done) {
sharp(fixtures.inputPngWithGreyAlpha)
.background('transparent')
.extend({top: 0, bottom: 20, left: 0, right: 20})
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('png', info.format);
assert.strictEqual(420, info.width);
assert.strictEqual(320, info.height);
assert.strictEqual(4, info.channels);
fixtures.assertSimilar(fixtures.expected('extend-2channel.png'), data, done);
});
});
});