test: update test samples (#7016)

* test: update test samples

e2e/nested-frame-navigation/e2e/issues.e2e.spec.ts

@@ -0,0 +1,55 @@
+import { AppiumDriver, createDriver } from "nativescript-dev-appium";
+import { Screen } from "./screen";
+import { suspendTime, dontKeepActivities } from "./config";
+
+describe("issues", () => {
+    let driver: AppiumDriver;
+    let screen: Screen;
+
+    before(async () => {
+        driver = await createDriver();
+        screen = new Screen(driver);
+        if (dontKeepActivities) {
+            await driver.setDontKeepActivities(true);
+        }
+    });
+
+    after(async () => {
+        if (dontKeepActivities) {
+            await driver.setDontKeepActivities(false);
+        }
+        await driver.quit();
+        console.log("Quit driver!");
+    });
+
+    afterEach(async function () {
+        if (this.currentTest.state === "failed") {
+            await driver.logTestArtifacts(this.currentTest.title);
+            await driver.resetApp();
+        }
+    });
+
+    it("issue-6488", async () => {
+        await screen.loadedHome();
+        const showSomePage = async () => {
+            const somePageBtn = await driver.waitForElement("somePageOnRoot");
+            await somePageBtn.tap();
+            await screen.loadedSomePage();
+        }
+
+        await showSomePage();
+
+        await driver.navBack();
+        await screen.loadedHome();
+
+        await driver.backgroundApp(suspendTime);
+
+        await showSomePage();
+        await driver.navBack();
+
+        await showSomePage();
+        await driver.navBack();
+
+        await screen.loadedHome();
+    });
+});