Renaming some code files

Author: stimms

Chapter 10/spy.js

@@ -1,18 +1,22 @@
-var sinon = require("sinon");
-
-var ToSpyUpon = (function () {
-    function ToSpyUpon() {
+var SpyUpon = (function () {
+    function SpyUpon() {
     }
-    ToSpyUpon.prototype.AddNumbers = function (number1, number2) {
-        throw new Exception("oops");
-        return number1 + number2;
+    SpyUpon.prototype.write = function (toWrite) {
+        console.log(toWrite);
+        return 7;
     };
-    return ToSpyUpon;
+    return SpyUpon;
 })();
 
-var thing = new ToSpyUpon();
-var spy = sinon.spy(thing, "AddNumbers");
-thing.AddNumbers(1, 2);
-console.log(spy.called);
-console.log(spy.args[0][1]);
-console.dir(spy);
+var spyUpon = new SpyUpon();
+spyUpon._write = spyUpon.write;
+spyUpon.write = function (arg1, arg2, arg3, arg4, arg5) {
+    this.called = true;
+    this.args = arguments;
+    this.result = this._write(arg1, arg2, arg3, arg4, arg5);
+    return this.result;
+};
+console.log(spyUpon.write("hello world"));
+console.log(spyUpon.called);
+console.log(spyUpon.args);
+console.log(spyUpon.result);

Chapter 10/spy.ts

@@ -1,17 +1,19 @@
-declare var require: any;
-var sinon = require("sinon")
-
- class ToSpyUpon{
-  public AddNumbers(number1: number, number2: number): number{
-    throw new Exception("oops");
-    return number1 +  number2;
+class SpyUpon{
+  write(toWrite){
+    console.log(toWrite);
+    return 7;
   }
 }
 
-
-var thing = new ToSpyUpon();
-var spy = sinon.spy(thing, "AddNumbers");
-thing.AddNumbers(1,2);
-console.log(spy.called);
-console.log(spy.args[0][1]);
-console.dir(spy);
+var spyUpon : any= new SpyUpon();
+spyUpon._write = spyUpon.write;
+spyUpon.write = function(arg1,arg2,arg3,arg4,arg5){
+  this.called = true;
+  this.args = arguments;
+  this.result = this._write(arg1,arg2,arg3,arg4,arg5);
+  return this.result;
+}
+console.log(spyUpon.write("hello world"));
+console.log(spyUpon.called);
+console.log(spyUpon.args);
+console.log(spyUpon.result);

Chapter 10/spy2.js

@@ -1 +1,46 @@
-var sinon
+class Knight{
+  credentialFactory: CredentialFactory;
+  constructor(credentialFactory){this.credentialFactory = credentialFactory;}
+
+  public presentCredentials(toRoyalty){
+    console.log("Presenting credentials to " + toRoyalty);
+    toRoyalty.send(this.credentialFactory.Create());
+    return true;
+  }
+}
+
+class CredentialFactory{
+  Create(){
+    //do complicated credential things
+  }
+}
+
+class StubCredentialFactory{
+  callCounter = 0;
+  Create(){
+    if(this.callCounter == 0)
+      return new SimpleCredential();
+    if(this.callCounter == 1)
+      return new CredentialWithSeal();
+    if(this.callCounter == 2)
+      return null;
+    this.callCounter++;
+  }
+}
+
+function assert(value){
+  if(!value)
+    throw "Assertion failure";
+}
+
+
+var knight = new Knight(new CredentialFactory());
+knight.presentCredentials("Queen Cersei");
+
+var knight = new Knight(new StubCredentialFactory());
+var credentials = knight.presentCredentials("Lord Snow");
+assert(credentials.type === "SimpleCredentials");
+credentials = knight.presentCredentials("Queen Cersei");
+assert(credentials.type === "CredentialWithSeal");
+credentials = knight.presentCredentials("Lord Stark");
+assert(credentials == null);