add option to shallow clone args in call tracker

lib/jasmine-core/jasmine.js

@@ -49,7 +49,7 @@ var getJasmineRequireObj = (function (jasmineGlobal) {
     j$.errors = jRequire.errors();
     j$.Any = jRequire.Any(j$);
     j$.Anything = jRequire.Anything(j$);
-    j$.CallTracker = jRequire.CallTracker();
+    j$.CallTracker = jRequire.CallTracker(j$);
     j$.MockDate = jRequire.MockDate();
     j$.Clock = jRequire.Clock();
     j$.DelayedFunctionScheduler = jRequire.DelayedFunctionScheduler();

spec/core/CallTrackerSpec.js

@@ -102,4 +102,20 @@ describe("CallTracker", function() {
     expect(callTracker.all()).toEqual([]);
     expect(callTracker.mostRecent()).toBeFalsy();
   });
+
+  it("allows object arguments to be shallow cloned", function() {
+    var callTracker = new jasmineUnderTest.CallTracker();
+    callTracker.saveArgumentsByValue();
+    
+    var originalArg = {"foo": "bar"};
+    callTracker.track({object: {}, args: [originalArg]});
+    expect(callTracker.mostRecent().args[0]).not.toBe(originalArg);
+
+    var anotherArg = {"foo": "bar", "baz": "foo"};
+    callTracker.track({object: {}, args: [
+      anotherArg, false, undefined, null, NaN, "", 0, 1.0, ['test', 123]
+    ]});
+    expect(callTracker.mostRecent().args[0]).not.toBe(anotherArg);
+  });
+
 });

src/core/CallTracker.js

@@ -1,9 +1,26 @@
-getJasmineRequireObj().CallTracker = function() {
+getJasmineRequireObj().CallTracker = function(j$) {
 
   function CallTracker() {
     var calls = [];
+    var opts = {};
+
+    function argCloner(context) {
+      debugger;
+      var clonedArgs = [];
+      j$.util.argsToArray(context.args).forEach(function(arg) {
+        if(Object.prototype.toString.apply(arg) === '[object Object]') {
+          clonedArgs.push(j$.util.clone(arg));
+        } else {
+          clonedArgs.push(arg);
+        }
+      });
+      context.args = clonedArgs;
+    }
 
     this.track = function(context) {
+      if(opts.cloneArgs) {
+        argCloner(context);
+      }
       calls.push(context);
     };
 
@@ -44,6 +61,11 @@ getJasmineRequireObj().CallTracker = function() {
     this.reset = function() {
       calls = [];
     };
+
+    this.saveArgumentsByValue = function() {
+      opts.cloneArgs = true;
+    };
+
   }
 
   return CallTracker;

src/core/requireCore.js

@@ -27,7 +27,7 @@ var getJasmineRequireObj = (function (jasmineGlobal) {
     j$.errors = jRequire.errors();
     j$.Any = jRequire.Any(j$);
     j$.Anything = jRequire.Anything(j$);
-    j$.CallTracker = jRequire.CallTracker();
+    j$.CallTracker = jRequire.CallTracker(j$);
     j$.MockDate = jRequire.MockDate();
     j$.Clock = jRequire.Clock();
     j$.DelayedFunctionScheduler = jRequire.DelayedFunctionScheduler();