From 016de80ce756a535a69a4bf0b51a1c66538ced2c Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Thu, 24 Mar 2016 00:35:22 -0700
Subject: [PATCH] Add debounce/throttle test for calling `cancel` and `flush`
 without anything queued.

---
 lodash.js    |  7 +++----
 test/test.js | 23 +++++++++++++++++++++--
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/lodash.js b/lodash.js
index 9a23ca301..2e77f23c0 100644
--- a/lodash.js
+++ b/lodash.js
@@ -9137,10 +9137,9 @@
       }
 
       function trailingEdge(time) {
-        if (timerId !== undefined) {
-          clearTimeout(timerId);
-          timerId = undefined;
-        }
+        clearTimeout(timerId);
+        timerId = undefined;
+
         // Only invoke if we have `lastArgs` which means `func` has been
         // debounced at least once.
         if (trailing && lastArgs) {
diff --git a/test/test.js b/test/test.js
index a7e6eac41..0a6bf1f92 100644
--- a/test/test.js
+++ b/test/test.js
@@ -21782,14 +21782,33 @@
       }, 32, { 'leading': false });
 
       funced();
-      var actual = funced.flush();
+      assert.strictEqual(funced.flush(), 1);
 
       setTimeout(function() {
-        assert.strictEqual(actual, 1);
         assert.strictEqual(callCount, 1);
         done();
       }, 64);
     });
+
+    QUnit.test('_.' + methodName + ' should noop `cancel` and `flush` when nothing is queued', function(assert) {
+      assert.expect(2);
+
+      var done = assert.async();
+
+      var callCount = 0;
+
+      var funced = func(function() {
+        callCount++;
+      }, 32);
+
+      funced.cancel();
+      assert.strictEqual(funced.flush(), undefined);
+
+      setTimeout(function() {
+        assert.strictEqual(callCount, 0);
+        done();
+      }, 64);
+    });
   });
 
   /*--------------------------------------------------------------------------*/