feat($injector): add strictDi property to $injector instance

Add a strictDi property which is true or false when creating an instance of an injector.

Closes angular#11728

Author: Kent C. Dodds

src/auto/injector.js

@@ -646,6 +646,8 @@ function createInjector(modulesToLoad, strictDi) {
 
   forEach(loadModules(modulesToLoad), function(fn) { instanceInjector.invoke(fn || noop); });
 
+  instanceInjector.strictDi = strictDi;
+
   return instanceInjector;
 
   ////////////////////////////////////

test/auto/injectorSpec.js

@@ -116,6 +116,10 @@ describe('injector', function() {
     expect($injector).not.toBe(providerInjector);
   }));
 
+  it('should have an false strictDi property', inject(function($injector) {
+    expect($injector.strictDi).toBe(false);
+  }));
+
 
   describe('invoke', function() {
     var args;
@@ -1036,4 +1040,8 @@ describe('strict-di injector', function() {
     inject(function($test) {});
     expect(called).toBe(true);
   });
+
+  it('should set strictDi property to true on the injector instance', inject(function($injector) {
+    expect($injector.strictDi).toBe(true);
+  }));
 });