Commit 82fce20

@@ -6,32 +6,92 @@ describe ("Fake", function() {
   describe ("when stubbing out return values", function() {
     describe ("when there is no args", function() {
       it ("should return the correct value", function() {
-        expect(result).toEqual("hello mo");
+        expect(result).toEqual("hello");
       });
       beforeEach (function() {
-        sut.stub('greet').andReturn('hello mo');
+        sut.stub('greet').andReturn('hello');
         result = sut.greet();
       });
       var result;
     });
+    describe ("when there are arguments to match", function() {
+      describe ("when there is a single input argument", function() {
+        it ("should return the value the corresponds to the input arguments", function() {
+          expect(sut.greet('mo')).toEqual('hello mo');
+        });
+        it ("should return the correct value that corresponds to other args", function() {
+          //expect(sut.greet('jo')).toEqual('hello jo');
+        });
+        beforeEach (function() {
+          sut.stub('greet').with('mo').andReturn('hello mo');
+          sut.stub('greet').with('jo').andReturn('hello jo');
+        });
+      });
+    });
   });
 });
 var Fake = (function(){
   var fake = function(){
-    methods = [];
+    _stubs = [];
     this.stub = function(method){
-      methods.push(method);
-      return this;
+      if(_stubs[method] === undefined) {
+        _stubs[method] = new Stub(this, method);
+      }
+      return _stubs[method];
+    };
+  };
+  return function(){
+    return new fake();
+  };
+})();
+
+var Stub = (function(){
+  var stub = function(target, method){
+    this.arguments = [];
+    this.with = function(){
+      var args = new Arguments(this, target, method, arguments);
+      this.arguments.push(args);
+      return args;
     };
     this.andReturn = function(return_value){
-      var method = methods[methods.length - 1];
-      console.log(method);
-      this[method] = function(){
+      target[method] = function(){
         return return_value;
       };
     };
+    this.find_match_for = function(args){
+      for (var i = 0; i < this.arguments.length; i += 1) {
+        var matcher = this.arguments[i];
+        if(matcher.matches(args)){
+          return matcher;
+        }
+      }
+      throw "Matcher not found.";
+    };
+  };
+  return function(target, method){
+    return new stub(target, method);
+  };
+})();
+var Arguments = (function(){
+  var Arguments = function(stub, target, method, expected_args){
+    this.andReturn = function(return_value){
+      this.return_value = return_value;
+
+      target[method] = function(){
+        return stub.find_match_for(arguments).return_value;
+      };
+    };
+    this.matches = function(args){
+      var result = expected_args === args;
+      for (var i = 0; i < expected_args.length; i += 1) {
+        if(args[i] !== expected_args[i]){
+          return false;
+        }
+      }
+      return true;
+    };
   };
-  return function(){
-    return new fake();
+  return function(stub, target, method, expected_args){
+    return new Arguments(stub, target, method, expected_args);
   };
 })();