1 files changed, 53 insertions, 0 deletions
diff --git a/test/parallel/test-util-sigint-watchdog.js b/test/parallel/test-util-sigint-watchdog.js
new file mode 100644
index 0000000000..2f95286a5e
--- /dev/null
+++ b/test/parallel/test-util-sigint-watchdog.js
@@ -0,0 +1,53 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const binding = process.binding('util');
+
+if (process.platform === 'win32') {
+  // No way to send CTRL_C_EVENT to processes from JS right now.
+  common.skip('platform not supported');
+  return;
+}
+
+[(next) => {
+  // Test with no signal observed.
+  binding.startSigintWatchdog();
+  const hadPendingSignals = binding.stopSigintWatchdog();
+  assert.strictEqual(hadPendingSignals, false);
+  next();
+},
+(next) => {
+  // Test with one call to the watchdog, one signal.
+  binding.startSigintWatchdog();
+  process.kill(process.pid, 'SIGINT');
+  setTimeout(common.mustCall(() => {
+    const hadPendingSignals = binding.stopSigintWatchdog();
+    assert.strictEqual(hadPendingSignals, true);
+    next();
+  }), common.platformTimeout(100));
+},
+(next) => {
+  // Nested calls are okay.
+  binding.startSigintWatchdog();
+  binding.startSigintWatchdog();
+  process.kill(process.pid, 'SIGINT');
+  setTimeout(common.mustCall(() => {
+    const hadPendingSignals1 = binding.stopSigintWatchdog();
+    const hadPendingSignals2 = binding.stopSigintWatchdog();
+    assert.strictEqual(hadPendingSignals1, true);
+    assert.strictEqual(hadPendingSignals2, false);
+    next();
+  }), common.platformTimeout(100));
+},
+() => {
+  // Signal comes in after first call to stop.
+  binding.startSigintWatchdog();
+  binding.startSigintWatchdog();
+  const hadPendingSignals1 = binding.stopSigintWatchdog();
+  process.kill(process.pid, 'SIGINT');
+  setTimeout(common.mustCall(() => {
+    const hadPendingSignals2 = binding.stopSigintWatchdog();
+    assert.strictEqual(hadPendingSignals1, false);
+    assert.strictEqual(hadPendingSignals2, true);
+  }), common.platformTimeout(100));
+}].reduceRight((a, b) => common.mustCall(b).bind(null, a))();