test: add test for #6490 (#6517)

tests/app/ui/helper.ts

@@ -209,8 +209,8 @@ export function waitUntilNavigatedTo(page: Page, action: Function) {
     TKUnit.waitUntilReady(() => completed, 5);
 }
 
-export function waitUntilNavigatedFrom(action: Function) {
-    const currentPage = frame.topmost().currentPage;
+export function waitUntilNavigatedFrom(action: Function, topFrame?: frame.Frame) {
+    const currentPage = topFrame ? topFrame.currentPage : frame.topmost().currentPage;
     let completed = false;
     function navigatedFrom(args) {
         args.object.page.off("navigatedFrom", navigatedFrom);
@@ -226,19 +226,19 @@ export function waitUntilLayoutReady(view: View): void {
     TKUnit.waitUntilReady(() => view.isLayoutValid);
 }
 
-export function navigateWithEntry(entry: frame.NavigationEntry): Page {
+export function navigateWithEntry(entry: frame.NavigationEntry, topFrame?: frame.Frame): Page {
     const page = createViewFromEntry(entry) as Page;
     entry.moduleName = null;
     entry.create = function () {
         return page;
     };
 
-    waitUntilNavigatedFrom(() => frame.topmost().navigate(entry));
+    waitUntilNavigatedFrom(() => topFrame ? topFrame.navigate(entry) : frame.topmost().navigate(entry));
     return page;
 }
 
-export function goBack() {
-    waitUntilNavigatedFrom(() => frame.topmost().goBack());
+export function goBack(topFrame?: frame.Frame) {
+    waitUntilNavigatedFrom(() => topFrame ? topFrame.goBack() : frame.topmost().goBack());
 }
 
 export function assertAreClose(actual: number, expected: number, message: string): void {

tests/app/ui/tab-view/tab-view-navigation-tests.ts

@@ -4,7 +4,7 @@ import { isIOS, isAndroid } from "tns-core-modules/platform";
 import { Label } from "tns-core-modules/ui/label";
 import { StackLayout } from "tns-core-modules/ui/layouts/stack-layout";
 import * as frameModule from "tns-core-modules/ui/frame";
-import { Page } from "tns-core-modules/ui/page";
+import { Page, NavigatedData } from "tns-core-modules/ui/page";
 import { ListView, ItemEventData } from "tns-core-modules/ui/list-view";
 import { TabView, TabViewItem } from "tns-core-modules/ui/tab-view";
 import { Button } from "tns-core-modules/ui/button";
@@ -68,6 +68,56 @@ function _clickHandlerFactory(index: number) {
     }
 }
 
+function _createFrameView(): frameModule.Frame {
+    const frame = new frameModule.Frame();
+    frame.navigate({ create: () => new Page() });
+    return frame;
+}
+
+export function testBackNavigationToTabViewWithNestedFramesShouldWork() {
+    // https://github.com/NativeScript/NativeScript/issues/6490
+    const topFrame = frameModule.topmost();
+
+    let tabViewPage: Page;
+    let tabView: TabView;
+
+    const pageFactory = function (): Page {
+        tabView = _createTabView();
+        let items = Array<TabViewItem>();
+        let tabViewitem = new TabViewItem();
+        tabViewitem.title = "Item1";
+        tabViewitem.view = _createFrameView();
+        items.push(tabViewitem);
+
+        let tabViewitem2 = new TabViewItem();
+        tabViewitem2.title = "Item2";
+        tabViewitem2.view = _createFrameView();
+        items.push(tabViewitem2);
+
+        tabView.items = items;
+
+        tabViewPage = new Page();
+        tabViewPage.id = "tab-view-page";
+        tabViewPage.content = tabView;
+
+        return tabViewPage;
+    }
+
+    helper.waitUntilNavigatedFrom(() => topFrame.navigate(pageFactory), topFrame);
+
+    TKUnit.waitUntilReady(() => topFrame.currentPage === tabViewPage);
+    TKUnit.waitUntilReady(() => tabViewIsFullyLoaded(tabView));
+
+    // navigate to a different page
+    helper.waitUntilNavigatedFrom(() => topFrame.navigate({ create: () => new Page(), animated: false }), topFrame);
+
+    // navigate back to the page that hold the tabview with nested frames
+    topFrame.goBack();
+
+    // make sure the app did not crash
+    TKUnit.waitUntilReady(() => topFrame.navigationQueueIsEmpty());
+}
+
 export function testWhenNavigatingBackToANonCachedPageContainingATabViewWithAListViewTheListViewIsThere() {
     var topFrame = frameModule.topmost();
 

tests/package.json

@@ -6,10 +6,10 @@
   "nativescript": {
     "id": "org.nativescript.UnitTestApp",
     "tns-ios": {
-      "version": "4.2.0"
+      "version": "5.0.0"
     },
     "tns-android": {
-      "version": "4.2.0"
+      "version": "5.0.0"
     }
   },
   "dependencies": {