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Expand linear operation to allow use of per-channel arrays #3303

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This commit is contained in:
Anton Marsden
2022-07-23 21:33:44 +12:00
committed by Lovell Fuller
parent b9261c243c
commit 74e3f73934
10 changed files with 104 additions and 34 deletions
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37
test/unit/linear.js
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@@ -65,15 +65,34 @@ describe('Linear adjustment', function () {
});
});
it('Invalid linear arguments', function () {
assert.throws(function () {
sharp(fixtures.inputPngOverlayLayer1)
.linear('foo');
});
it('per channel level adjustment', function (done) {
sharp(fixtures.inputWebP)
.linear([0.25, 0.5, 0.75], [150, 100, 50]).toBuffer(function (err, data, info) {
if (err) throw err;
fixtures.assertSimilar(fixtures.expected('linear-per-channel.jpg'), data, done);
});
});
assert.throws(function () {
sharp(fixtures.inputPngOverlayLayer1)
.linear(undefined, { bar: 'baz' });
});
it('Invalid linear arguments', function () {
assert.throws(
() => sharp().linear('foo'),
/Expected number or array of numbers for a but received foo of type string/
);
assert.throws(
() => sharp().linear(undefined, { bar: 'baz' }),
/Expected number or array of numbers for b but received \[object Object\] of type object/
);
assert.throws(
() => sharp().linear([], [1]),
/Expected number or array of numbers for a but received {2}of type object/
);
assert.throws(
() => sharp().linear([1, 2], [1]),
/Expected a and b to be arrays of the same length/
);
assert.throws(
() => sharp().linear([1]),
/Expected a and b to be arrays of the same length/
);
});
});