test(change_detection): add an integration test verifying that binding propagation config works

modules/angular2/core.js

@@ -2,12 +2,13 @@ export * from './src/core/annotations/annotations';
 export * from './src/core/annotations/visibility';
 export * from './src/core/compiler/interfaces';
 export * from './src/core/annotations/template_config';
-
 export * from './src/core/application';
 
 export * from './src/core/compiler/compiler';
+
 export * from './src/core/compiler/template_loader';
 export * from './src/core/compiler/view';
 export * from './src/core/compiler/viewport';
+export * from './src/core/compiler/binding_propagation_config';
 
 export * from './src/core/dom/element';

modules/angular2/src/change_detection/abstract_change_detector.js

@@ -51,4 +51,12 @@ export class AbstractChangeDetector extends ChangeDetector {
       children[i]._detectChanges(throwOnChange);
     }
   }
+
+  markPathToRootAsCheckOnce() {
+    var c = this;
+    while(isPresent(c) && c.mode != DETACHED) {
+      if (c.mode === CHECKED) c.mode = CHECK_ONCE;
+      c = c.parent;
+    }
+  }
 }

modules/angular2/src/change_detection/change_detection_util.js

@@ -214,12 +214,4 @@ export class ChangeDetectionUtil {
     }
     return updatedRecords;
   }
-
-  static markPathToRootAsCheckOnce(cd:ChangeDetector) {
-    var c = cd;
-    while(isPresent(c) && c.mode != DETACHED) {
-      if (c.mode === CHECKED) c.mode = CHECK_ONCE;
-      c = c.parent;
-    }
-  }
 }

modules/angular2/test/change_detection/change_detection_spec.js

@@ -535,7 +535,7 @@ export function main() {
             var checkOnceChild = changeDetector(CHECK_ONCE, checkAlwaysChild);
             var checkedChild = changeDetector(CHECKED, checkOnceChild);
 
-            ChangeDetectionUtil.markPathToRootAsCheckOnce(checkedChild);
+            checkedChild.markPathToRootAsCheckOnce();
 
             expect(root.mode).toEqual(CHECK_ALWAYS);
             expect(disabled.mode).toEqual(DETACHED);

modules/angular2/test/core/compiler/integration_spec.js

@@ -9,6 +9,7 @@ import {Compiler, CompilerCache} from 'angular2/src/core/compiler/compiler';
 import {DirectiveMetadataReader} from 'angular2/src/core/compiler/directive_metadata_reader';
 import {NativeShadowDomStrategy} from 'angular2/src/core/compiler/shadow_dom_strategy';
 import {TemplateLoader} from 'angular2/src/core/compiler/template_loader';
+import {BindingPropagationConfig} from 'angular2/src/core/compiler/binding_propagation_config';
 
 import {Decorator, Component, Template} from 'angular2/src/core/annotations/annotations';
 import {TemplateConfig} from 'angular2/src/core/annotations/template_config';
@@ -198,6 +199,26 @@ export function main() {
           done();
         })
       });
+
+      it('should provide binding configuration config to the component', (done) => {
+        compiler.compile(MyComp, el('<push-cmp #cmp></push-cmp>')).then((pv) => {
+          createView(pv);
+
+          var cmp = view.contextWithLocals.get('cmp');
+
+          cd.detectChanges();
+          expect(cmp.numberOfChecks).toEqual(1);
+
+          cd.detectChanges();
+          expect(cmp.numberOfChecks).toEqual(1);
+
+          cmp.propagate();
+
+          cd.detectChanges();
+          expect(cmp.numberOfChecks).toEqual(2);
+          done();
+        })
+      });
     });
   });
 }
@@ -214,8 +235,34 @@ class MyDir {
 }
 
 @Component({
+  selector: 'push-cmp',
   template: new TemplateConfig({
-    directives: [MyDir, ChildComp, SomeTemplate]
+    inline: '{{field}}'
+  })
+})
+class PushBasedComp {
+  numberOfChecks:number;
+  bpc:BindingPropagationConfig;
+
+  constructor(bpc:BindingPropagationConfig) {
+    this.numberOfChecks = 0;
+    this.bpc = bpc;
+    bpc.shouldBePropagated();
+  }
+
+  get field(){
+    this.numberOfChecks++;
+    return "fixed";
+  }
+
+  propagate() {
+    this.bpc.shouldBePropagatedFromRoot();
+  }
+}
+
+@Component({
+  template: new TemplateConfig({
+    directives: [MyDir, ChildComp, SomeTemplate, PushBasedComp]
   })
 })
 class MyComp {