Wait up to 3 seconds for angular to be found on the page, and if it isn't give

a sane error message. Fixes issue #2.

Author: juliemr

externalhttpspec.js

@@ -1,31 +1,63 @@
-var webdriver = require('selenium-webdriver');
-var protractor = require('./protractor.js');
-var assert = require('assert');
 var util = require('util');
 
-var driver = new webdriver.Builder().
-    usingServer('http://localhost:4444/wd/hub').
-    withCapabilities({
-      'browserName': 'chrome',
-      'version': '',
-      'platform': 'ANY',
-      'javascriptEnabled': true
-    }).build();
 
-driver.manage().timeouts().setScriptTimeout(10000);
-var ptor = protractor.wrapDriver(driver);
+describe('angularjs homepage', function() {
+  var webdriver = require('selenium-webdriver');
+  var protractor = require('./protractor.js');
 
-ptor.get('http://www.angularjs.org');
+  var driver = new webdriver.Builder().
+      usingServer('http://localhost:4444/wd/hub').
+      withCapabilities({
+        'browserName': 'chrome',
+        'version': '',
+        'platform': 'ANY',
+        'javascriptEnabled': true
+      }).build();
 
-ptor.findElement(protractor.By.input("yourName")).sendKeys("Julie");
+  driver.manage().timeouts().setScriptTimeout(10000);
+  var ptor = protractor.wrapDriver(driver);
 
-ptor.findElement(protractor.By.binding("Hello {{yourName}}!")).
-    getText().then(function(text) {
-      assert.equal('Hello Julie!', text);
-    });
+  it('should greet using binding', function(done) {
+    ptor.get('http://www.angularjs.org');
 
-// Uncomment to see failures.
-// ptor.findElement(protractor.By.binding("Hello {{yourName}}!")).
-//     getText().then(function(text) {
-//       assert.equal('Hello Jack!', text);
-//     });
+    ptor.findElement(protractor.By.input("yourName")).sendKeys("Julie");
+
+    ptor.findElement(protractor.By.binding("Hello {{yourName}}!")).
+        getText().then(function(text) {
+          expect(text).toEqual('Hello Julie!');
+          done();
+        });
+  }, 10000);
+
+  it('should greet using binding - #2', function(done) {
+    ptor.get('http://www.angularjs.org');
+
+    ptor.findElement(protractor.By.input("yourName")).sendKeys("Jane");
+
+    ptor.findElement(protractor.By.binding("Hello {{yourName}}!")).
+        getText().then(function(text) {
+          expect(text).toEqual('Hello Jane!');
+          done();
+        });
+  }, 10000);
+
+  // Uncomment to see failures.
+  it('should greet using binding - this one fails', function(done) {
+    ptor.get('http://www.angularjs.org');
+
+    ptor.findElement(protractor.By.input("yourName")).sendKeys("Julie");
+
+    ptor.findElement(protractor.By.binding("Hello {{yourName}}!")).
+        getText().then(function(text) {
+          expect(text).toEqual('Hello Jack');
+          done();
+        });
+  });
+  
+
+  it('afterAll', function() {
+    // This is a sad hack to do any shutdown of the server.
+    // TODO(juliemr): Add afterall functionality to jasmine-node
+    driver.quit();
+  })
+});

protractor.js

@@ -118,6 +118,33 @@ clientSideScripts.findRepeaterElement = function() {
  };
 
 
+/**
+ * Tests whether the angular global variable is present on a page. Retries
+ * twice in case the page is just loading slowly.
+ *
+ * arguments none
+ *
+ * @return {boolean} true if angular was found.
+ */
+ clientSideScripts.testForAngular = function() {
+  var callback = arguments[arguments.length - 1];
+  var retry = function(n) {
+    if (window.angular && window.angular.resumeBootstrap) {
+      callback(true);
+    } else if (n < 1) {
+      callback(false)
+    } else {
+      window.setTimeout(function() {retry(n - 1)}, 1000);
+    }
+  }
+  if (window.angular && window.angular.resumeBootstrap) {
+    callback(true);
+  } else {
+    retry(3);
+  }
+}
+
+
 /**
  * @param {webdriver.WebDriver} webdriver
  * @constructor
@@ -199,9 +226,18 @@ Protractor.prototype.get = function(destination) {
   this.driver.get('about:blank');
   this.driver.executeScript('window.name += "' + DEFER_LABEL + '";' + 
       'window.location.href = "' + destination + '"');
+
+  // Make sure the page is an Angular page.
+  this.driver.executeAsyncScript(clientSideScripts.testForAngular).
+      then(function(hasAngular) {
+        if (!hasAngular) {
+          throw new Error("Angular could not be found on the page " +
+              destination);
+        }
+      });
+
   // At this point, Angular will pause for us, until angular.resumeBootstrap
   // is called.
-
   for (var i = 0; i < this.moduleScripts_.length; ++i) {
     this.driver.executeScript(this.moduleScripts_[i]);
   }