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Update backgrounds when function returns a different color

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This commit is contained in:
Andreas Hocevar
2022-04-09 10:47:53 +02:00
parent c03f58fe5d
commit cbb18ab805
2 changed files with 27 additions and 4 deletions
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18
test/browser/spec/ol/renderer/canvas/vectortilelayer.test.js
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@@ -318,6 +318,24 @@ describe('ol/renderer/canvas/VectorTileLayer', function () {
done();
});
});
it('changes background when function returns a different color', function (done) {
let first = true;
layer.setBackground(function (resolution) {
expect(resolution).to.be(map.getView().getResolution());
const background = first === true ? undefined : 'rgba(255, 0, 0, 0.5)';
first = false;
return background;
});
map.once('rendercomplete', function () {
expect(layer.getRenderer().container.style.backgroundColor).to.be('');
map.renderSync();
expect(layer.getRenderer().container.style.backgroundColor).to.be(
'rgba(255, 0, 0, 0.5)'
);
done();
});
});
});
describe('#prepareFrame', function () {