fix(router): make router links work on non-a tags

modules/@angular/router/test/router.spec.ts

@@ -476,7 +476,6 @@ describe('Integration', () => {
            })));
   });
 
-
   describe('router links', () => {
     it('should support string router links',
        fakeAsync(
@@ -504,6 +503,31 @@ describe('Integration', () => {
              expect(fixture.debugElement.nativeElement).toHaveText('team 33 { simple, right:  }');
            })));
 
+    it('should support using links on non-a tags',
+       fakeAsync(
+           inject([Router, TestComponentBuilder], (router: Router, tcb: TestComponentBuilder) => {
+             const fixture = createRoot(tcb, router, RootCmp);
+
+             router.resetConfig([{
+               path: 'team/:id',
+               component: TeamCmp,
+               children: [
+                 {path: 'link', component: StringLinkButtonCmp},
+                 {path: 'simple', component: SimpleCmp}
+               ]
+             }]);
+
+             router.navigateByUrl('/team/22/link');
+             advance(fixture);
+             expect(fixture.debugElement.nativeElement).toHaveText('team 22 { link, right:  }');
+
+             const native = fixture.debugElement.nativeElement.querySelector('button');
+             native.click();
+             advance(fixture);
+
+             expect(fixture.debugElement.nativeElement).toHaveText('team 33 { simple, right:  }');
+           })));
+
     it('should support absolute router links',
        fakeAsync(
            inject([Router, TestComponentBuilder], (router: Router, tcb: TestComponentBuilder) => {
@@ -1023,6 +1047,15 @@ function expectEvents(events: Event[], pairs: any[]) {
 class StringLinkCmp {
 }
 
+@Component({
+  selector: 'link-cmp',
+  template: `<button routerLink
+="/team/33/simple">link</button>`,
+  directives: ROUTER_DIRECTIVES
+})
+class StringLinkButtonCmp {
+}
+
 @Component({
   selector: 'link-cmp',
   template: `<router-outlet></router-outlet><a [routerLink]="['/team/33/simple']">link</a>`,
@@ -1159,7 +1192,7 @@ class RelativeLinkInIfCmp {
   precompile: [
     BlankCmp, SimpleCmp, TeamCmp, UserCmp, StringLinkCmp, DummyLinkCmp, AbsoluteLinkCmp,
     RelativeLinkCmp, DummyLinkWithParentCmp, LinkWithQueryParamsAndFragment, CollectParamsCmp,
-    QueryParamsAndFragmentCmp
+    QueryParamsAndFragmentCmp, StringLinkButtonCmp
   ]
 })
 class RootCmp {