Mojo JS bindings: BindingSet support.

mojo/edk/js/tests/binding_tests.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 define([
     "gin/test/expect",
     "mojo/public/js/bindings",
     "mojo/public/interfaces/bindings/tests/math_calculator.mojom",
     "mojo/public/js/threading",
     "gc",
 ], function(expect,
             bindings,
             math,
             threading,
             gc) {
   testIsBound()
       .then(testReusable)
       .then(testConnectionError)
       .then(testUnbind)
+      .then(testBindingSet)
       .then(function() {
     this.result = "PASS";
     gc.collectGarbage();  // should not crash
     threading.quit();
   }.bind(this)).catch(function(e) {
     this.result = "FAIL: " + (e.stack || e);
     threading.quit();
   }.bind(this));
 
   function CalculatorImpl() {
@@ skipping 81 matching lines @@
                                             new CalculatorImpl(),
                                             interfaceRequest);
       return calc.add(2);
     }).then(function(response) {
       expect(response.value).toBe(2);
       return Promise.resolve();
     });
 
     return promise;
   }
+
+  function testBindingSet() {
+    var calc1 = new math.CalculatorPtr();
+    var calc2 = new math.CalculatorPtr();
+    var calcImpl = new CalculatorImpl();
+
+    var bindingSet = new bindings.BindingSet(math.Calculator);
+    expect(bindingSet.isEmpty()).toBeTruthy();
+    bindingSet.addBinding(calcImpl, bindings.makeRequest(calc1));
+    bindingSet.addBinding(calcImpl, bindings.makeRequest(calc2));
+    expect(bindingSet.isEmpty()).toBeFalsy();
+
+    var promise = calc1.add(3).then(function(response) {
+      expect(response.value).toBe(3);
+      return calc2.add(4);
+    }).then(function(response) {
+      expect(response.value).toBe(7);
+
+      var promiseOfConnectionError = new Promise(function(resolve, reject) {
+        bindingSet.setConnectionErrorHandler(function() {
+          resolve();
+        });
+      });
+      calc1.ptr.reset();
+      return promiseOfConnectionError;
+    }).then(function() {
+      return calc2.add(5);
+    }).then(function(response) {
+      expect(response.value).toBe(12);
+
+      bindingSet.closeAllBindings();
+      expect(bindingSet.isEmpty()).toBeTruthy();
+      return Promise.resolve();
+    });
+
+    return promise;
+  }
 });