54454952e0
Step 1 of the spec is to capture the <script> element's node document
into a local variable.
When I originally implemented this, I thought this was not necessary.
However, I realised that the script that runs can adopt the current
script element into a different document, meaning step 5.4 and 6 then
operate on the incorrect document.
Covered by this WPT: 7b0ebaccc6/html/semantics/scripting-1/the-script-element/moving-between-documents-during-evaluation.html
36 lines
1.5 KiB
JavaScript
36 lines
1.5 KiB
JavaScript
describe("currentScript", () => {
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loadLocalPage("/res/html/misc/blank.html");
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beforeInitialPageLoad(page => {
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expect(page.document.currentScript).toBeNull();
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});
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afterInitialPageLoad(page => {
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test("reset to null even if currentScript is adopted into another document", () => {
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const script = page.document.createElement("script");
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script.id = "test";
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script.innerText = `
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const newDocument = globalThis.pageObject.document.implementation.createHTMLDocument();
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const thisScript = globalThis.pageObject.document.getElementById("test");
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// currentScript should stay the same even across adoption.
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expect(globalThis.pageObject.document.currentScript).toBe(thisScript);
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newDocument.adoptNode(thisScript);
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expect(globalThis.pageObject.document.currentScript).toBe(thisScript);
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`;
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// currentScript should be null before and after running the script on insertion.
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expect(page.document.currentScript).toBeNull();
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expect(script.ownerDocument).toBe(page.document);
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globalThis.pageObject = page;
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page.document.body.appendChild(script);
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globalThis.pageObject = undefined;
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expect(page.document.currentScript).toBeNull();
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expect(script.ownerDocument).not.toBe(page.document);
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});
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});
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waitForPageToLoad();
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});
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