From e9f6bc60e9fd504a1cbea3b3293147102d998c36 Mon Sep 17 00:00:00 2001
From: matsuda-koushi <cauchymazda@r.recruit.co.jp>
Date: Fri, 3 Feb 2017 15:59:12 +0900
Subject: [PATCH] test: improve coverage on removeListeners functions

PR-URL: https://github.com/nodejs/node/pull/11140
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Italo A. Casas <me@italoacasas.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
---
 test/parallel/test-event-emitter-remove-all-listeners.js | 6 ++++++
 test/parallel/test-event-emitter-remove-listeners.js     | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/test/parallel/test-event-emitter-remove-all-listeners.js b/test/parallel/test-event-emitter-remove-all-listeners.js
index d7865b09abe9f5..e793cedb0dd4cf 100644
--- a/test/parallel/test-event-emitter-remove-all-listeners.js
+++ b/test/parallel/test-event-emitter-remove-all-listeners.js
@@ -82,3 +82,9 @@ function listener() {}
   const ee = new events.EventEmitter();
   assert.deepStrictEqual(ee, ee.removeAllListeners());
 }
+
+{
+  const ee = new events.EventEmitter();
+  ee._events = undefined;
+  assert.strictEqual(ee, ee.removeAllListeners());
+}
diff --git a/test/parallel/test-event-emitter-remove-listeners.js b/test/parallel/test-event-emitter-remove-listeners.js
index 03bde6c3d7c4c9..2253d20fef0c0b 100644
--- a/test/parallel/test-event-emitter-remove-listeners.js
+++ b/test/parallel/test-event-emitter-remove-listeners.js
@@ -128,3 +128,11 @@ assert.throws(() => {
 
   ee.removeListener('foo', null);
 }, /^TypeError: "listener" argument must be a function$/);
+
+{
+  const ee = new EventEmitter();
+  const listener = () => {};
+  ee._events = undefined;
+  const e = ee.removeListener('foo', listener);
+  assert.strictEqual(e, ee);
+}