refactor(reflection): improved error message

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

@@ -31,6 +31,18 @@ export function main() {
   }
 
   describe('reflection capabilities', () => {
+    describe("factory", () => {
+      it("should create a factory for a type", () => {
+        var f = rc.factory(ClassWithField);
+        expect(f("value").field).toEqual("value");
+      });
+
+      it("should throw when a constructor has more than 10 args", () => {
+        expect(() => rc.factory(ClassWith11Fields)).toThrowError(
+            new RegExp(`has more than 10 arguments`));
+      });
+    });
+
     it('can read out class annotations through annotations key', () => {
       assertTestClassAnnotations(rc.annotations(TestClass));
     });
@@ -115,6 +127,17 @@ class TestClassTypesOnly {
   constructor(a: P1, b: P2) {}
 }
 
+class ClassWithField {
+  field;
+  constructor(field) {
+    this.field = field;
+  }
+}
+class ClassWith11Fields {
+  constructor(a0,a1,a2,a3,a4,a5,a6,a7,a8,a9,a10) {
+  }
+}
+
 // Mocking the data stored in global.Reflect as if TS was compiling TestClass above.
 var mockDataForTestClassTypesOnly = {
   'annotations': null,