Added test cases for non-Latin fonts. (#99)

* add non_latin_font_names_test.ts

* add test pdf

examples/tests/src/non_latin_font_names.test.ts

@@ -0,0 +1,33 @@
+import * as fs from "fs";
+import * as mupdf from "mupdf";
+import * as path from "path";
+import { describe, expect, it } from "vitest";
+
+const scriptdir = path.resolve(__dirname);
+const filename = path.join(scriptdir, "resources", "has-bad-fonts.pdf");
+const fileData = fs.readFileSync(filename);
+
+describe("Non-Latin font names test", () => {
+  it("should handle PDFs with non-Latin font names", async () => {
+    const document = await mupdf.Document.openDocument(fileData, "application/pdf") as mupdf.PDFDocument;
+    const page = document.loadPage(0);
+    const pageObj = page.getObject();
+    const resources = pageObj.get("Resources");
+    const fonts = resources.get("Font");
+
+    console.log(`File '${filename}' uses the following fonts on page 0:`);
+
+    const fontNames: string[] = [];
+    fonts.forEach((value, key) => {
+      const fontName = value.get("BaseFont").asName();
+      fontNames.push(fontName);
+    });
+
+    expect(fontNames.length).toBeGreaterThan(0);
+
+    const hasNonLatinFont = fontNames.some(name => /[^\u0000-\u007F]/.test(name));
+    expect(hasNonLatinFont).toBe(true);
+
+    document.destroy();
+  });
+});