Add tests for <map-layer media="..."> attribute

Author: prushforth

test/e2e/elements/map-layer/map-layer-media.test.js

@@ -0,0 +1,84 @@
+import { test, expect, chromium } from '@playwright/test';
+
+test.describe('map-layer media attribute', () => {
+  let page;
+  let context;
+  let viewer;
+  test.beforeAll(async function () {
+    context = await chromium.launchPersistentContext('');
+    page =
+      context.pages().find((page) => page.url() === 'about:blank') ||
+      (await context.newPage());
+    await page.goto('map-layer-media.html');
+    await page.waitForTimeout(1000);
+    viewer = page.getByTestId('viewer');
+  });
+  test('On initial load, a matching media queried layer is enabled', async ()=>{
+    const matchedQueryLayer = page.getByTestId('initial-mq');
+    // map loads at z=2, query matches 0 <= z <= 3
+    await expect(matchedQueryLayer).not.toHaveAttribute('disabled', '');
+  });
+  test(`A visible (enabled) map-layer with no media query should remain enabled \
+when a matching mq is added`, async ()=> {
+    const noInitialQueryLayer = page.getByTestId('no-initial-mq');
+    await expect(noInitialQueryLayer).not.toHaveAttribute('disabled','');
+    await viewer.evaluate((v) => v.zoomTo(v.lat,v.lon,4));
+    await page.waitForTimeout(200);
+    // should still be enabled:
+    await expect(noInitialQueryLayer).not.toHaveAttribute('disabled','');
+  });
+  test(`A visible (enabled) map-layer with no media query should be disabled \
+when a non-matching media query attribute is set`, async ()=> {
+    await expect(viewer).toHaveAttribute('zoom','4');
+    const presentInLayerControl = await viewer.evaluate((v) => {
+      let lc = v._layerControl;
+      let layers = lc._layers.map((e) => e.layer._layerEl);
+      let noInitialQueryLayer = v.querySelector('[data-testid=no-initial-mq]');
+      return layers.some((e) => e === noInitialQueryLayer);
+    });
+    expect(presentInLayerControl).toBe(true);
+    const noInitialQueryLayer = page.getByTestId('no-initial-mq');
+    await expect(noInitialQueryLayer).not.toHaveAttribute('disabled','');
+    await noInitialQueryLayer.evaluate((l) => l.media = '(0 <= map-zoom <=3)');
+    await expect(noInitialQueryLayer).toHaveAttribute('disabled','');
+  });
+  test(`A mq-disabled layer is removed from the layer control`,async ()=>{
+    const noInitialQueryLayer = page.getByTestId('no-initial-mq');
+    await expect(noInitialQueryLayer).toHaveAttribute('media','(0 <= map-zoom <=3)');
+    await expect(noInitialQueryLayer).toHaveAttribute('disabled','');
+    const presentInLayerControl = await viewer.evaluate((v) => {
+      let lc = v._layerControl;
+      let layers = lc._layers.map((e) => e.layer._layerEl);
+      let noInitialQueryLayer = v.querySelector('[data-testid=no-initial-mq]');
+      return layers.some((e) => e === noInitialQueryLayer);
+    });
+    expect(presentInLayerControl).toBe(false);
+  });
+  test(`A layer disabled due to mq would otherwise be enabled is \
+enabled and added to the layer control when mq removed`, async () =>{
+    const noInitialQueryLayer = page.getByTestId('no-initial-mq');
+    await expect(noInitialQueryLayer).toHaveAttribute('media','(0 <= map-zoom <=3)');
+    await expect(noInitialQueryLayer).toHaveAttribute('disabled','');
+    await noInitialQueryLayer.evaluate((l) => l.removeAttribute('media'));
+    await expect(noInitialQueryLayer).not.toHaveAttribute('disabled','');
+    const presentInLayerControl = await viewer.evaluate((v) => {
+      let lc = v._layerControl;
+      let layers = lc._layers.map((e) => e.layer._layerEl);
+      let noInitialQueryLayer = v.querySelector('[data-testid=no-initial-mq]');
+      return layers.some((e) => e === noInitialQueryLayer);
+    });
+    expect(presentInLayerControl).toBe(true);
+    
+  });
+  test(`An empty media query is the same as no media query`, async () =>{
+    const noInitialQueryLayer = page.getByTestId('no-initial-mq');
+    await noInitialQueryLayer.evaluate((l)=> l.setAttribute('media', ' '));
+    await expect(noInitialQueryLayer).not.toHaveAttribute('disabled','');
+    
+  });
+  test(`An invalid media query is the same as a non-matching media query`, async () =>{
+    const noInitialQueryLayer = page.getByTestId('no-initial-mq');
+    await noInitialQueryLayer.evaluate((l)=> l.setAttribute('media', '(foo '));
+    await expect(noInitialQueryLayer).toHaveAttribute('disabled','');
+  });
+});