Module
x/ruck/createPseudoNode.test.mjs
Ruck is an open source buildless React web application framework for Deno.
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import puppeteer from "puppeteer";
import serveProjectFiles from "./test/serveProjectFiles.mjs";import testPuppeteerPage from "./test/testPuppeteerPage.mjs";
Deno.test("`createPseudoNode` in a DOM environment.", async () => { const abortController = new AbortController(); const projectFileServer = await serveProjectFiles(abortController.signal);
try { const projectFilesOriginUrl = new URL( `http://localhost:${projectFileServer.port}`, ); const browser = await puppeteer.launch();
try { // Note that page HTML is on a single line because React rendering doesn’t // add whitespace between nodes that would result in extra text nodes.
// Todo: Refactor to use Deno test steps once this Deno bug is fixed: // https://github.com/denoland/deno/issues/15425
// Test `createPseudoNode` with argument 1 `startNode` not a DOM node. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="end"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
try { createPseudoNode( // @ts-expect-error Testing invalid. true, /** @type {Element} */ (document.querySelector('[name="end"]')), );
throw new Error("Expected an error."); } catch (error) { if ( !(error instanceof TypeError) || error.message !== "Argument 1 `startNode` must be a DOM node." ) { throw error; } } }, projectFileServer.port); }, );
// Test `createPseudoNode` with argument 2 `endNode` not a DOM node. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="start"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
try { createPseudoNode( /** @type {Element} */ (document.querySelector( '[name="start"]', )), // @ts-expect-error Testing invalid. true, );
throw new Error("Expected an error."); } catch (error) { if ( !(error instanceof TypeError) || error.message !== "Argument 2 `endNode` must be a DOM node." ) { throw error; } } }, projectFileServer.port); }, );
// Test `createPseudoNode` with parent DOM node missing. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="end"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
try { createPseudoNode( // @ts-expect-error Testing invalid. document.createDocumentFragment(), /** @type {Element} */ (document.querySelector('[name="end"]')), );
throw new Error("Expected an error."); } catch (error) { if ( !(error instanceof TypeError) || error.message !== "Parent DOM node missing." ) { throw error; } } }, projectFileServer.port); }, );
// Test `createPseudoNode` with start and end DOM nodes not having the // same parent. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="end"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
try { createPseudoNode( /** @type {Element} */ (document.querySelector("head")), /** @type {Element} */ (document.querySelector('[name="end"]')), );
throw new Error("Expected an error."); } catch (error) { if ( !(error instanceof TypeError) || error.message !== "Start and end DOM nodes must have the same parent." ) { throw error; } } }, projectFileServer.port); }, );
// Test `createPseudoNode` reflects non overridden parent DOM node properties and methods. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="before"><meta name="start"><meta name="end"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
const headElement = /** @type {Element} */ ( document.querySelector("head") );
const pseudoNode = createPseudoNode( /** @type {Element} */ (document.querySelector('[name="start"]')), /** @type {Element} */ (document.querySelector('[name="end"]')), );
if (pseudoNode.nodeType !== headElement.nodeType) { throw new Error( "Expected property `nodeType` to match that of the parent node.", ); }
if (typeof pseudoNode.addEventListener !== "function") { throw new Error( "Expected method `addEventListener` to be a function.", ); } }, projectFileServer.port); }, );
// Test `createPseudoNode` property `firstChild`, without children. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="before"><meta name="start"><meta name="end"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
const pseudoNode = createPseudoNode( /** @type {Element} */ (document.querySelector('[name="start"]')), /** @type {Element} */ (document.querySelector('[name="end"]')), );
if (pseudoNode.firstChild !== null) { throw new Error("Expected property `firstChild` to be `null`."); } }, projectFileServer.port); }, );
// Test `createPseudoNode` property `firstChild`, with children. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="before"><meta name="start"><meta name="child1"><meta name="child2"><meta name="end"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
const pseudoNode = createPseudoNode( /** @type {Element} */ (document.querySelector('[name="start"]')), /** @type {Element} */ (document.querySelector('[name="end"]')), );
const child1 = /** @type {Element} */ (document.querySelector( '[name="child1"]', ));
const firstChild = /** @type {Element} */ (pseudoNode.firstChild);
if (firstChild.valueOf() !== child1) { throw new Error( "Expected property `firstChild` to be a proxy of the first child DOM node.", ); }
// Test the proxy child DOM node reflects non overridden properties // and methods.
if (firstChild.nodeType !== child1.nodeType) { throw new Error( "Expected property `nodeType` to match that of the proxied node.", ); }
if (typeof firstChild.addEventListener !== "function") { throw new Error( "Expected method `addEventListener` to be a function.", ); } }, projectFileServer.port); }, );
// Test `createPseudoNode` child node property `nextSibling`. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="before"><meta name="start"><meta name="child1"><meta name="child2"><meta name="end"><meta name="after"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
const pseudoNode = createPseudoNode( /** @type {Element} */ (document.querySelector('[name="start"]')), /** @type {Element} */ (document.querySelector('[name="end"]')), );
const child1Proxy = /** @type {Element} */ (pseudoNode.firstChild);
const child2Proxy = /** @type {Element} */ (child1Proxy.nextSibling);
const child2 = /** @type {Element} */ (document.querySelector( '[name="child2"]', ));
if (child2Proxy.valueOf() !== child2) { throw new Error( "Expected property `nextSibling` to be a proxy of the second child DOM node.", ); }
// Test the proxy child DOM node reflects non overridden properties // and methods.
if (child2Proxy.nodeType !== child2.nodeType) { throw new Error( "Expected property `nodeType` to match that of the proxied node.", ); }
if (typeof child2Proxy.addEventListener !== "function") { throw new Error( "Expected method `addEventListener` to be a function.", ); }
if (child2Proxy.nextSibling !== null) { throw new Error( "Expected child 2 property `nextSibling` to be `null`.", ); } }, projectFileServer.port); }, );
// Test `createPseudoNode` method `insertBefore`. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="before"><meta name="start"><meta name="child1"><meta name="end"><meta name="after"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
const pseudoNode = createPseudoNode( /** @type {Element} */ (document.querySelector('[name="start"]')), /** @type {Element} */ (document.querySelector('[name="end"]')), );
const child2 = document.createElement("meta"); child2.setAttribute("name", "child2");
pseudoNode.insertBefore(child2, pseudoNode.firstChild);
const htmlActual = document.documentElement.outerHTML; const htmlExpected = '<html><head><meta name="before"><meta name="start"><meta name="child2"><meta name="child1"><meta name="end"><meta name="after"></head><body></body></html>'; if (htmlActual !== htmlExpected) { throw new Error( `Expected HTML:\n\n${htmlExpected}\n\nActual HTML:\n\n${htmlActual}\n\n`, ); } }, projectFileServer.port); }, );
// Test `createPseudoNode` method `appendChild`. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="before"><meta name="start"><meta name="child1"><meta name="end"><meta name="after"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
const pseudoNode = createPseudoNode( /** @type {Element} */ (document.querySelector('[name="start"]')), /** @type {Element} */ (document.querySelector('[name="end"]')), );
const child2 = document.createElement("meta"); child2.setAttribute("name", "child2");
pseudoNode.appendChild(child2);
const htmlActual = document.documentElement.outerHTML; const htmlExpected = '<html><head><meta name="before"><meta name="start"><meta name="child1"><meta name="child2"><meta name="end"><meta name="after"></head><body></body></html>'; if (htmlActual !== htmlExpected) { throw new Error( `Expected HTML:\n\n${htmlExpected}\n\nActual HTML:\n\n${htmlActual}\n\n`, ); } }, projectFileServer.port); }, );
// Test `createPseudoNode` method `removeChild`. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="before"><meta name="start"><meta name="child1"><meta name="child2"><meta name="end"><meta name="after"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
const pseudoNode = createPseudoNode( /** @type {Element} */ (document.querySelector('[name="start"]')), /** @type {Element} */ (document.querySelector('[name="end"]')), );
pseudoNode.removeChild( /** @type {Element} */ (document.querySelector( '[name="child2"]', )), );
const htmlActual = document.documentElement.outerHTML; const htmlExpected = '<html><head><meta name="before"><meta name="start"><meta name="child1"><meta name="end"><meta name="after"></head><body></body></html>'; if (htmlActual !== htmlExpected) { throw new Error( `Expected HTML:\n\n${htmlExpected}\n\nActual HTML:\n\n${htmlActual}\n\n`, ); } }, projectFileServer.port); }, );
// Test `createPseudoNode` setting a custom property. await testPuppeteerPage( browser, projectFilesOriginUrl, async (page) => { await page.setContent( '<!DOCTYPE html><html><head><meta name="before"><meta name="start"><meta name="child1"><meta name="child2"><meta name="end"><meta name="after"></head></html>', );
await page.evaluate(async (projectFileServerPort) => { /** @type {import("./createPseudoNode.mjs")} */ const { default: createPseudoNode } = await import( `http://localhost:${projectFileServerPort}/createPseudoNode.mjs` );
const pseudoNode = createPseudoNode( /** @type {Element} */ (document.querySelector('[name="start"]')), /** @type {Element} */ (document.querySelector('[name="end"]')), );
const key = "ruck_test_custom_property"; const value = {};
// @ts-ignore Testing a custom property. pseudoNode[key] = value;
if ( // @ts-ignore Testing a custom property. pseudoNode[key] !== value ) { throw new Error( "Expected custom property to have set on the node.", ); } }, projectFileServer.port); }, ); } finally { await browser.close(); } } finally { abortController.abort(); await projectFileServer.close; }});