1 files changed, 25 insertions, 0 deletions
diff --git a/std/node/events_test.ts b/std/node/events_test.ts
index adeae5b93..a3285f24b 100644
--- a/std/node/events_test.ts
+++ b/std/node/events_test.ts
@@ -61,6 +61,31 @@ Deno.test({
     EventEmitter.defaultMaxListeners = 20;
     assertEquals(EventEmitter.defaultMaxListeners, 20);
     EventEmitter.defaultMaxListeners = 10; //reset back to original value
+
+    assertThrows(() => {
+      new EventEmitter().setMaxListeners(-1);
+    });
+
+    const ee = new EventEmitter();
+    const noop = (): void => {};
+    const origWarn = console.warn;
+
+    for (let i = 10; i--;) {
+      ee.on("test", noop);
+    }
+
+    // there are only sync actions until it gets restored,
+    // so it's safe to overwrite this
+    console.warn = (): void => fail("Infinity listeners should be allowed");
+
+    ee.setMaxListeners(Infinity);
+    ee.on("test", noop);
+
+    // 0 means that unlimited listeners are allowed
+    ee.setMaxListeners(0);
+    ee.on("test", noop);
+
+    console.warn = origWarn;
   },
 });