fix(test): skip Windows SIGINT restoration check

Windows process.kill(..., "SIGINT") terminates the target process instead of delivering a recoverable signal event. Skip the portability check there so CI only asserts behavior the platform can actually support.

Author: oetr

packages/fuzzer/libafl_runtime.test.ts

@@ -219,9 +219,13 @@ describe("LibAFL runtime", () => {
 		}
 	});
 
-	it("restores previous SIGINT handlers after fuzzing", () => {
-		const options = { ...libAflOptions, runs: 1 };
-		const script = `
+	// On Windows, process.kill(..., "SIGINT") terminates the target process
+	// instead of delivering a recoverable signal event to userland listeners.
+	(process.platform === "win32" ? it.skip : it)(
+		"restores previous SIGINT handlers after fuzzing",
+		() => {
+			const options = { ...libAflOptions, runs: 1 };
+			const script = `
 			const addon = require(${JSON.stringify(nativeAddonPath())});
 			addon.registerCoverageMap(Buffer.alloc(${1 << 20}));
 			addon.registerNewCounters(0, 512);
@@ -242,16 +246,17 @@ describe("LibAFL runtime", () => {
 				});
 		`;
 
-		const result = spawnSync(process.execPath, ["-e", script], {
-			encoding: "utf8",
-		});
+			const result = spawnSync(process.execPath, ["-e", script], {
+				encoding: "utf8",
+			});
 
-		if (result.signal !== null || result.status !== 0) {
-			throw new Error(
-				`Child process exited with status ${result.status} and signal ${result.signal}: ${result.stderr}`,
-			);
-		}
-	});
+			if (result.signal !== null || result.status !== 0) {
+				throw new Error(
+					`Child process exited with status ${result.status} and signal ${result.signal}: ${result.stderr}`,
+				);
+			}
+		},
+	);
 
 	it("records compare feedback in the shared native map", async () => {
 		addon.clearCompareFeedbackMap();