diff --git a/extensions/signal/src/install-signal-cli.test.ts b/extensions/signal/src/install-signal-cli.test.ts
index ce1808e83a8..13bc21f0662 100644
--- a/extensions/signal/src/install-signal-cli.test.ts
+++ b/extensions/signal/src/install-signal-cli.test.ts
@@ -141,6 +141,13 @@ describe("extractSignalCliArchive", () => {
     }
   }
 
+  async function expectExtractedSignalCli(archivePath: string, extractDir: string) {
+    await extractSignalCliArchive(archivePath, extractDir, 5_000);
+
+    const extracted = await fs.readFile(path.join(extractDir, "root", "signal-cli"), "utf-8");
+    expect(extracted).toBe("bin");
+  }
+
   it("rejects zip slip path traversal", async () => {
     await withArchiveWorkspace(async (workDir) => {
       const archivePath = path.join(workDir, "bad.zip");
@@ -167,10 +174,7 @@ describe("extractSignalCliArchive", () => {
       zip.file("root/signal-cli", "bin");
       await fs.writeFile(archivePath, await zip.generateAsync({ type: "nodebuffer" }));
 
-      await extractSignalCliArchive(archivePath, extractDir, 5_000);
-
-      const extracted = await fs.readFile(path.join(extractDir, "root", "signal-cli"), "utf-8");
-      expect(extracted).toBe("bin");
+      await expectExtractedSignalCli(archivePath, extractDir);
     });
   });
 
@@ -184,10 +188,7 @@ describe("extractSignalCliArchive", () => {
       await tar.c({ cwd: workDir, file: archivePath, gzip: true }, ["root"]);
 
       await fs.mkdir(extractDir, { recursive: true });
-      await extractSignalCliArchive(archivePath, extractDir, 5_000);
-
-      const extracted = await fs.readFile(path.join(extractDir, "root", "signal-cli"), "utf-8");
-      expect(extracted).toBe("bin");
+      await expectExtractedSignalCli(archivePath, extractDir);
     });
   });
 });