fix(ngMock): Change ErrorAddingDeclarationLocationStack prototype

src/ngMock/angular-mocks.js

@@ -3057,7 +3057,7 @@ angular.mock.$RootScopeDecorator = ['$delegate', function($delegate) {
       this.stack = e.stack + '\n' + errorForStack.stack;
     if (e.stackArray) this.stackArray = e.stackArray;
   };
-  ErrorAddingDeclarationLocationStack.prototype.toString = Error.prototype.toString;
+  ErrorAddingDeclarationLocationStack.prototype = Error.prototype;
 
   window.inject = angular.mock.inject = function() {
     var blockFns = Array.prototype.slice.call(arguments, 0);

test/ngMock/angular-mocksSpec.js

@@ -631,7 +631,6 @@ describe('ngMock', function() {
 
       inject(); // Trigger the tests in `module`
     });
-
   });
 
 
@@ -985,6 +984,27 @@ describe('ngMock', function() {
           });
         }
       });
+
+      it('Errors should be caught by jasmine\'s toThrowError', function() {
+        //create function that causes an error
+        function causeNgMocksError() {
+          module(function($provide) {
+            //cause $provide.factory to include an error
+            $provide.factory('causeError', function() {
+              //Say for example, some mock module caused an error when instantiated
+              throw new Error("Error!");
+            });
+          });
+
+          //call the injector on 'causeError' to make sure the provider is called
+          var causeError;
+          inject(function(_causeError_) {
+            causeError = _causeError_;
+          });
+        }
+
+        expect(causeNgMocksError).toThrowError(/Error/g);
+      });
     });
   });