e046b811b7
While `TextLayerRenderTask` apparently makes sense in TypeScript environments, given that it's being returned by the `renderTextLayer`-function in the API, we really don't want to extend the *public* API by simply exporting the class directly in `src/pdf.js` since it should never be called/initialized manually. Hence we follow the same pattern as in PR 14013, and add some very basic unit-tests to ensure that `renderTextLayer` always returns a `TextLayerRenderTask`-instance as expected.
63 lines
2.0 KiB
JavaScript
63 lines
2.0 KiB
JavaScript
/* Copyright 2022 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import {
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renderTextLayer,
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TextLayerRenderTask,
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} from "../../src/display/text_layer.js";
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import { buildGetDocumentParams } from "./test_utils.js";
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import { getDocument } from "../../src/display/api.js";
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import { isNodeJS } from "../../src/shared/is_node.js";
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describe("textLayer", function () {
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it("creates textLayer from ReadableStream", async function () {
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if (isNodeJS) {
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pending("document.createDocumentFragment is not supported in Node.js.");
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}
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const loadingTask = getDocument(buildGetDocumentParams("basicapi.pdf"));
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const pdfDocument = await loadingTask.promise;
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const page = await pdfDocument.getPage(1);
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const textContentItemsStr = [];
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const textLayerRenderTask = renderTextLayer({
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textContentStream: page.streamTextContent(),
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container: document.createDocumentFragment(),
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viewport: page.getViewport(),
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textContentItemsStr,
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});
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expect(textLayerRenderTask instanceof TextLayerRenderTask).toEqual(true);
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await textLayerRenderTask.promise;
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expect(textContentItemsStr).toEqual([
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"Table Of Content",
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"",
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"Chapter 1",
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" ",
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"..........................................................",
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" ",
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"2",
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"",
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"Paragraph 1.1",
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" ",
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"......................................................",
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" ",
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"3",
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"",
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"page 1 / 3",
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]);
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});
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});
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