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dd-pdf.js/test/unit/operator_list_dependencies_spec.js

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JavaScript

/* Copyright 2026 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { getDocument, PDFPageProxy } from "../../src/display/api.js";
import { buildGetDocumentParams } from "./test_utils.js";
import { PixelsPerInch } from "../../src/display/display_utils.js";
describe("dependencies tracking", function () {
let dependencies;
beforeAll(() => {
globalThis.StepperManager = {
enabled: true,
create() {
return {
init() {},
updateOperatorList() {},
getNextBreakPoint: () => null,
nextBreakPoint: null,
shouldSkip: () => false,
setOperatorBBoxes(_bboxes, deps) {
dependencies = deps;
},
};
},
};
});
afterEach(() => {
dependencies = null;
});
afterAll(() => {
delete globalThis.StepperManager;
});
it("pattern fill", async () => {
const loadingTask = getDocument(
buildGetDocumentParams("22060_A1_01_Plans.pdf")
);
const pdfDocument = await loadingTask.promise;
const page = await pdfDocument.getPage(1);
expect(page).toBeInstanceOf(PDFPageProxy);
page._pdfBug = true;
const viewport = page.getViewport({
scale: PixelsPerInch.PDF_TO_CSS_UNITS,
});
const { canvas } = pdfDocument.canvasFactory.create(
viewport.width,
viewport.height
);
const renderTask = page.render({
canvas,
viewport,
recordOperations: true,
});
await renderTask.promise;
expect(dependencies.get(14)).toEqual({
dependencies: new Set([0, 1, 2, 6, 7, 8, 12, 13]),
isRenderingOperation: true,
});
await loadingTask.destroy();
});
});