From b4b3ac25a157a4169988f7f17bb46200d58a2bef Mon Sep 17 00:00:00 2001
From: slackersoft <gregg@slackersoft.net>
Date: Tue, 16 Dec 2014 13:21:48 -0800
Subject: [PATCH] spyOn explicitly checks to see that a method name to spy on
 was passed.

[finish #27689237]
---
 lib/jasmine-core/jasmine.js  | 4 ++++
 spec/core/SpyRegistrySpec.js | 9 +++++++++
 src/core/SpyRegistry.js      | 4 ++++
 3 files changed, 17 insertions(+)

diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 12ba55e3..fd653ebc 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -1864,6 +1864,10 @@ getJasmineRequireObj().SpyRegistry = function(j$) {
         throw new Error('spyOn could not find an object to spy upon for ' + methodName + '()');
       }
 
+      if (j$.util.isUndefined(methodName)) {
+        throw new Error('No method name supplied');
+      }
+
       if (j$.util.isUndefined(obj[methodName])) {
         throw new Error(methodName + '() method does not exist');
       }
diff --git a/spec/core/SpyRegistrySpec.js b/spec/core/SpyRegistrySpec.js
index 36dcf68c..f7930172 100644
--- a/spec/core/SpyRegistrySpec.js
+++ b/spec/core/SpyRegistrySpec.js
@@ -7,6 +7,15 @@ describe("SpyRegistry", function() {
       }).toThrowError(/could not find an object/);
     });
 
+    it("checks that a method name was passed", function() {
+      var spyRegistry = new j$.SpyRegistry(),
+        subject = {};
+
+        expect(function() {
+          spyRegistry.spyOn(subject);
+        }).toThrowError(/No method name supplied/);
+    });
+
     it("checks for the existence of the method", function() {
       var spyRegistry = new j$.SpyRegistry(),
         subject = {};
diff --git a/src/core/SpyRegistry.js b/src/core/SpyRegistry.js
index 776393ed..43f9edfe 100644
--- a/src/core/SpyRegistry.js
+++ b/src/core/SpyRegistry.js
@@ -9,6 +9,10 @@ getJasmineRequireObj().SpyRegistry = function(j$) {
         throw new Error('spyOn could not find an object to spy upon for ' + methodName + '()');
       }
 
+      if (j$.util.isUndefined(methodName)) {
+        throw new Error('No method name supplied');
+      }
+
       if (j$.util.isUndefined(obj[methodName])) {
         throw new Error(methodName + '() method does not exist');
       }