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test/unit/pdf.image_decoders_spec.js

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+/* Copyright 2023 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 {
+  getVerbosityLevel,
+  setVerbosityLevel,
+  VerbosityLevel,
+} from "../../src/shared/util.js";
+import { Jbig2Error, Jbig2Image } from "../../src/core/jbig2.js";
+import { JpegError, JpegImage } from "../../src/core/jpg.js";
+import { JpxError, JpxImage } from "../../src/core/jpx.js";
+
+const expectedAPI = Object.freeze({
+  getVerbosityLevel,
+  Jbig2Error,
+  Jbig2Image,
+  JpegError,
+  JpegImage,
+  JpxError,
+  JpxImage,
+  setVerbosityLevel,
+  VerbosityLevel,
+});
+
+describe("pdfimage_api", function () {
+  it("checks that the *official* PDF.js-image decoders API exposes the expected functionality", async function () {
+    // eslint-disable-next-line no-unsanitized/method
+    const pdfimageAPI = await import(
+      typeof PDFJSDev !== "undefined" && PDFJSDev.test("LIB")
+        ? "../../pdf.image_decoders.js"
+        : "../../src/pdf.image_decoders.js"
+    );
+
+    // The imported Object contains an (automatically) inserted Symbol,
+    // hence we copy the data to allow using a simple comparison below.
+    expect({ ...pdfimageAPI }).toEqual(expectedAPI);
+
+    expect(Object.keys(globalThis.pdfjsImageDecoders).sort()).toEqual(
+      Object.keys(expectedAPI).sort()
+    );
+  });
+});