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bottom-navigation-root-tests.ts
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bottom-navigation-root-tests.ts
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import * as TKUnit from "../../tk-unit";
import { isAndroid } from "@nativescript/core/platform";
import { _resetRootView } from "@nativescript/core/application/";
import { Frame, NavigationEntry } from "@nativescript/core/ui/frame";
import { Page } from "@nativescript/core/ui/page";
// import { TabView, TabViewItem } from "@nativescript/core/ui/tab-view";
import { BottomNavigation, TabContentItem, TabStrip, TabStripItem } from "@nativescript/core/ui/bottom-navigation";
function waitUntilNavigatedToMaxTimeout(pages: Page[], action: Function) {
const maxTimeout = 8;
let completed = 0;
function navigatedTo(args) {
args.object.page.off("navigatedTo", navigatedTo);
completed++;
}
pages.forEach(page => page.on("navigatedTo", navigatedTo));
action();
TKUnit.waitUntilReady(() => completed === pages.length, maxTimeout);
}
function waitUntilTabViewReady(page: Page, action: Function) {
action();
if (isAndroid) {
TKUnit.waitUntilReady(() => page.frame._currentEntry.fragment.isAdded());
} else {
TKUnit.waitUntilReady(() => page.isLoaded);
}
}
function createPage(i: number) {
const page = new Page();
page.id = `Tab${i} Frame${i} Page${i}`;
return page;
}
function createFrame(i: number, page: Page) {
const frame = new Frame();
frame.navigate(() => page);
frame.id = `Tab${i} Frame${i}`;
return frame;
}
function createTabItem(i: number, frame: Frame) {
const tabEntry = new TabContentItem();
// tabEntry.title = "Tab " + i;
tabEntry.content = frame;
tabEntry["index"] = i;
return tabEntry;
}
function createTabItemsWithFrames(count: number) {
const items = [];
for (var i = 0; i < count; i++) {
const page = createPage(i);
const frame = createFrame(i, page);
const tabItem = createTabItem(i, frame);
items.push({ page, frame, tabItem });
}
return items;
}
function createTabStrip(count: number): TabStrip {
const items = new Array<TabStripItem>();
for (let i = 0; i < count; i++) {
let tabStripEntry = new TabStripItem();
tabStripEntry.title = "Tab " + i;
items.push(tabStripEntry);
}
const tabStrip = new TabStrip();
tabStrip.items = items;
return tabStrip;
}
export function test_frame_topmost_matches_selectedIndex() {
const items = createTabItemsWithFrames(3);
const tabView = new BottomNavigation();
tabView.items = items.map(item => item.tabItem);
tabView.tabStrip = createTabStrip(3);
// iOS cannot preload tab items
// Android preloads 1 tab item to the sides by default
// set this to 0, so that both platforms behave the same.
// tabView.androidOffscreenTabLimit = 0;
const entry: NavigationEntry = {
create: () => tabView
};
waitUntilNavigatedToMaxTimeout([items[0].page], () => _resetRootView(entry));
TKUnit.assertEqual(Frame.topmost().id, "Tab0 Frame0");
waitUntilNavigatedToMaxTimeout([items[1].page], () => tabView.selectedIndex = 1);
TKUnit.assertEqual(Frame.topmost().id, "Tab1 Frame1");
}
export function test_no_preloading_on_index_change() {
let actualEventsRaised = [];
function resetActualEventsRaised() {
for (var i = 0; i < actualEventsRaised.length; i++) {
actualEventsRaised[i] = [];
}
}
function attachEventHandlers(i: number, item) {
actualEventsRaised.push([]);
const page = item.page;
page.on(Page.loadedEvent, () => actualEventsRaised[i].push(`${page.id} loaded`));
page.on(Page.unloadedEvent, () => actualEventsRaised[i].push(`${page.id} unloaded`));
page.on(Page.navigatingToEvent, () => actualEventsRaised[i].push(`${page.id} navigatingTo`));
page.on(Page.navigatingFromEvent, () => actualEventsRaised[i].push(`${page.id} navigatingFrom`));
page.on(Page.navigatedToEvent, () => actualEventsRaised[i].push(`${page.id} navigatedTo`));
page.on(Page.navigatedFromEvent, () => actualEventsRaised[i].push(`${page.id} navigatedFrom`));
const frame = item.frame;
frame.on(Frame.loadedEvent, () => actualEventsRaised[i].push(`${frame.id} loaded`));
frame.on(Frame.unloadedEvent, () => actualEventsRaised[i].push(`${frame.id} unloaded`));
}
const items = createTabItemsWithFrames(3);
items.forEach((item, i) => {
attachEventHandlers(i, item);
});
const tabView = new BottomNavigation();
tabView.items = items.map(item => item.tabItem);
tabView.tabStrip = createTabStrip(3);
const entry: NavigationEntry = {
create: () => tabView
};
waitUntilNavigatedToMaxTimeout([items[0].page], () => _resetRootView(entry));
const expectedEventsRaisedAfterTabCreated = [
[
"Tab0 Frame0 loaded",
"Tab0 Frame0 Page0 navigatingTo",
"Tab0 Frame0 Page0 loaded",
"Tab0 Frame0 Page0 navigatedTo",
],
[],
[]
];
TKUnit.assertDeepEqual(actualEventsRaised, expectedEventsRaisedAfterTabCreated);
resetActualEventsRaised();
waitUntilNavigatedToMaxTimeout([items[2].page], () => tabView.selectedIndex = 2);
const expectedEventsRaisedAfterSelectThirdTab = [
[
"Tab0 Frame0 Page0 unloaded",
"Tab0 Frame0 unloaded",
],
[],
[
"Tab2 Frame2 loaded",
"Tab2 Frame2 Page2 navigatingTo",
"Tab2 Frame2 Page2 loaded",
"Tab2 Frame2 Page2 navigatedTo"
]
];
TKUnit.assertDeepEqual(actualEventsRaised, expectedEventsRaisedAfterSelectThirdTab);
resetActualEventsRaised();
waitUntilTabViewReady(items[0].page, () => tabView.selectedIndex = 0);
const expectedEventsRaisedAfterReturnToFirstTab = [
[
"Tab0 Frame0 Page0 loaded",
"Tab0 Frame0 loaded",
],
[],
[
"Tab2 Frame2 Page2 unloaded",
"Tab2 Frame2 unloaded",
]
];
TKUnit.assertDeepEqual(actualEventsRaised, expectedEventsRaisedAfterReturnToFirstTab);
}
export function tearDownModule() {
const page = new Page();
const frame = new Frame();
frame.navigate(() => page);
const entry: NavigationEntry = {
create: () => frame
};
waitUntilNavigatedToMaxTimeout([page], () => _resetRootView(entry));
}