feat(router): implement recognizer

modules/angular2/test/alt_router/recognize_spec.ts

@@ -0,0 +1,89 @@
+import {
+  ComponentFixture,
+  AsyncTestCompleter,
+  TestComponentBuilder,
+  beforeEach,
+  ddescribe,
+  xdescribe,
+  describe,
+  el,
+  expect,
+  iit,
+  inject,
+  beforeEachProviders,
+  it,
+  xit
+} from 'angular2/testing_internal';
+
+import {recognize} from 'angular2/src/alt_router/recognize';
+import {Routes, Route} from 'angular2/alt_router';
+import {provide, Component, ComponentResolver} from 'angular2/core';
+import {UrlSegment, Tree} from 'angular2/src/alt_router/segments';
+
+export function main() {
+  describe('recognize', () => {
+    it('should handle position args',
+       inject([AsyncTestCompleter, ComponentResolver], (async, resolver) => {
+         recognize(resolver, ComponentA, tree(["b", "paramB", "c", "paramC"]))
+             .then(r => {
+               let b = r.root;
+               expect(stringifyUrl(b.urlSegments)).toEqual(["b", "paramB"]);
+               expect(b.type).toBe(ComponentB);
+
+               let c = r.firstChild(r.root);
+               expect(stringifyUrl(c.urlSegments)).toEqual(["c", "paramC"]);
+               expect(c.type).toBe(ComponentC);
+
+               async.done();
+             });
+       }));
+
+    it('should error when no matching routes',
+       inject([AsyncTestCompleter, ComponentResolver], (async, resolver) => {
+         recognize(resolver, ComponentA, tree(["invalid"]))
+             .catch(e => {
+               expect(e.message).toEqual("Cannot match any routes");
+               async.done();
+             });
+       }));
+
+    it("should error when a component doesn't have @Routes",
+       inject([AsyncTestCompleter, ComponentResolver], (async, resolver) => {
+         recognize(resolver, ComponentA, tree(["d", "invalid"]))
+             .catch(e => {
+               expect(e.message)
+                   .toEqual("Component 'ComponentD' does not have route configuration");
+               async.done();
+             });
+       }));
+  });
+}
+
+function tree(nodes: string[]) {
+  return new Tree<UrlSegment>(nodes.map(v => new UrlSegment(v, {}, "")));
+}
+
+function stringifyUrl(segments: UrlSegment[]): string[] {
+  return segments.map(s => s.segment);
+}
+
+@Component({selector: 'c', template: 't'})
+class ComponentC {
+}
+
+@Component({selector: 'd', template: 't'})
+class ComponentD {
+}
+
+@Component({selector: 'b', template: 't'})
+@Routes([new Route({path: "c/:c", component: ComponentC})])
+class ComponentB {
+}
+
+@Component({selector: 'a', template: 't'})
+@Routes([
+  new Route({path: "b/:b", component: ComponentB}),
+  new Route({path: "d", component: ComponentD})
+])
+class ComponentA {
+}