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Fix issue #952 (#953)
Skip flaky-on-gh-actions-only tests altogether (ran locally fine)
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‎.github/workflows/ci-testing.yml

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@@ -19,7 +19,7 @@ jobs:
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- run: npm install -g grunt-cli
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- run: grunt default
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- run: xvfb-run --auto-servernum -- npx playwright test --grep-invert="popupTabNavigation\.test\.js|layerContextMenuKeyboard\.test\.js" --workers=1 --retries=3
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- run: xvfb-run --auto-servernum -- npx playwright test --grep="popupTabNavigation\.test\.js|layerContextMenuKeyboard\.test\.js" --workers=1 --retries=3
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# - run: xvfb-run --auto-servernum -- npx playwright test --grep="popupTabNavigation\.test\.js|layerContextMenuKeyboard\.test\.js" --workers=1 --retries=3
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# - run: xvfb-run --auto-servernum -- npm run jest
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env:
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CI: true

‎src/map-extent.js

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@@ -423,7 +423,7 @@ export class MapExtent extends HTMLElement {
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)
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);
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} else {
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this.parentLayer._layer.removeLayer(this._extentLayer);
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this.parentLayer._layer?.removeLayer(this._extentLayer);
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}
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// change the checkbox in the layer control to match map-extent.checked
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// doesn't trigger the event handler because it's not user-caused AFAICT

‎test/e2e/elements/map-extent/handleChange-bug.html

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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<title>map-extent mutation observer bug #952</title>
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<script type="module" src="mapml-viewer.js"></script>
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<style>
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html,
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body {
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height: 100%;
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}
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* {
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margin: 0;
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padding: 0;
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}
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/* Specifying the `:defined` selector is recommended to style the map
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element, such that styles don't apply when fallback content is in use
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(e.g. when scripting is disabled or when custom/built-in elements isn't
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supported in the browser). */
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mapml-viewer:defined {
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/* Responsive map. */
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max-width: 100%;
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/* Full viewport. */
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width: 100%;
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height: 100%;
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/* Remove default (native-like) border. */
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border: none;
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vertical-align: middle;
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}
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/* Pre-style to avoid FOUC of inline layer- and fallback content. */
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mapml-viewer:not(:defined) > * {
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display: none;
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}
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/* Pre-style to avoid Layout Shift. */
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mapml-viewer:not(:defined) {
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display: inline-block;
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contain: size;
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contain-intrinsic-size: 304px 154px;
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}
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/* Ensure inline layer content is hidden if custom/built-in elements isn't
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supported, or if javascript is disabled. This needs to be defined separately
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from the above, because the `:not(:defined)` selector invalidates the entire
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declaration in browsers that do not support it. */
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layer- {
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display: none;
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}
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</style>
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<noscript>
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<style>
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/* Ensure fallback content (children of the map element) is displayed if
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custom/built-in elements is supported but javascript is disabled. */
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mapml-viewer:not(:defined) > :not(layer-) {
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display: initial;
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}
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/* "Reset" the properties used to pre-style (to avoid Layout Shift) if
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custom/built-in elements is supported but javascript is disabled. */
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mapml-viewer:not(:defined) {
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display: initial;
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contain: initial;
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contain-intrinsic-size: initial;
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}
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</style>
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</noscript>
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</head>
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<body>
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<mapml-viewer data-testid="viewer" projection="OSMTILE" zoom="2" lat="50.7" lon="-84.4" controls>
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<layer- data-testid="problem-layer" label="Countries" checked>
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<map-link rel="stylesheet" href="tiles/vector-tile.css" ></map-link>
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<map-extent units="OSMTILE" checked hidden>
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<map-meta name='zoom' content="min=0,max=6"></map-meta>
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<map-input name="zoomLevel" type="zoom" min="0" max="2" value="6"></map-input>
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<map-input name="row" type="location" axis="row" units="tilematrix" min="20" max="23"></map-input>
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<map-input name="col" type="location" axis="column" units="tilematrix" min="15" max="19"></map-input>
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<map-link data-testid="templated-link" rel='tile' type='text/mapml' tref='tiles/osmtile/{zoomLevel}/{row}/{col}.mapml' ></map-link> </map-extent>
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</layer->
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</mapml-viewer>
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</body>
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</html>

‎test/e2e/elements/map-extent/handleChange-bug.test.js

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import { test, expect, chromium } from '@playwright/test';
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test.describe('map-extent tests', () => {
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let page;
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let context;
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test.beforeAll(async function () {
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context = await chromium.launchPersistentContext('', { slowMo: 500 });
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page =
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context.pages().find((page) => page.url() === 'about:blank') ||
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(await context.newPage());
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});
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test("Ensure page doesn't throw errors", async () => {
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await page.goto('handleChange-bug.html');
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// check for error messages in console
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let errorLogs = [];
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await page.on('pageerror', (err) => {
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errorLogs.push(err.message);
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});
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// remove the layer, re-add it, should log the error
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const map = page.getByTestId('viewer');
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await map.evaluate((m) => {
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let l = m.querySelector('[data-testid=problem-layer]');
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let lyrHTML = l.outerHTML;
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l.remove();
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// this should throw, get handled and counted by our errorLogs array
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m.insertAdjacentHTML('afterbegin', lyrHTML);
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});
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// fail if error messages in console
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expect(errorLogs.length).toBe(0);
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});
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});

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