Add regression test for PR 19639

test/unit/evaluator_spec.js

@@ -423,4 +423,30 @@ describe("evaluator", function () {
       expect(operatorList.length).toEqual(0);
     });
   });
+
+  describe("graphics-state operators", function () {
+    it("should convert negative line width to absolute value in the graphic state", async function () {
+      const gState = new Dict();
+      gState.set("LW", -5);
+      const extGState = new Dict();
+      extGState.set("GSneg", gState);
+
+      const resources = new ResourcesMock();
+      resources.ExtGState = extGState;
+
+      const stream = new StringStream("/GSneg gs");
+      const result = await runOperatorListCheck(
+        partialEvaluator,
+        stream,
+        resources
+      );
+
+      expect(result.fnArray).toEqual([OPS.setGState]);
+
+      const stateEntries = result.argsArray[0][0];
+      const lwEntry = stateEntries.find(([key]) => key === "LW");
+      expect(lwEntry).toBeDefined();
+      expect(lwEntry[1]).toEqual(5);
+    });
+  });
 });