Support single-slashed absolute paths in FileSystemXHR

Author: hdeshev

src/nativescript-angular/xhr.ts

@@ -4,7 +4,7 @@ import {XHR} from "@angular/compiler/src/xhr";
 export class FileSystemXHR extends XHR {
     resolve(url: string, baseUrl: string): string {
         //Angular assembles absolute URL's and prefixes them with //
-        if (url.indexOf("//") !== 0) {
+        if (url.indexOf("/") !== 0) {
             //Resolve relative URL's based on the app root.
             return path.join(baseUrl, url);
         } else {

tests/app/tests/xhr-paths.ts

@@ -8,8 +8,13 @@ describe("XHR name resolution", () => {
         assert.strictEqual("/app/dir/mydir/mycomponent.html", xhr.resolve("mydir/mycomponent.html", "/app/dir"))
     });
 
-    it("resolves absolute paths as is", () => {
+    it("resolves double-slashed absolute paths as is", () => {
         const xhr = new FileSystemXHR();
         assert.strictEqual("//app/mydir/mycomponent.html", xhr.resolve("//app/mydir/mycomponent.html", "/app/dir"))
     });
+
+    it("resolves single-slashed absolute paths as is", () => {
+        const xhr = new FileSystemXHR();
+        assert.strictEqual("/data/data/app/mydir/mycomponent.html", xhr.resolve("/data/data/app/mydir/mycomponent.html", "/app/dir"))
+    });
 })