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47 lines
1.7 KiB
JavaScript
47 lines
1.7 KiB
JavaScript
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// node --test: node's built-in runner, no dependency needed. Only parseFps is
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// exercised (a pure function) — renderComposition needs a real Chromium
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// render and is covered by manual/e2e verification instead.
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import { readFile } from "node:fs/promises";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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import { test } from "node:test";
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import assert from "node:assert/strict";
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import { parseFps } from "./render.js";
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const __dirname = path.dirname(fileURLToPath(import.meta.url));
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const compositionsRoot = path.join(__dirname, "..", "motion", "compositions");
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test("parseFps reads data-fps off a real composition file", async () => {
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const html = await readFile(
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path.join(compositionsRoot, "release-announcement", "vertical.html"),
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"utf8",
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);
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assert.equal(parseFps(html), 30);
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});
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test("parseFps reads a declared 24fps composition", () => {
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const html = `<div id="stage" data-fps="24"></div>`;
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assert.equal(parseFps(html), 24);
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});
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test("parseFps falls back to 30 when the attribute is missing", () => {
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assert.equal(parseFps("<html><body>no fps here</body></html>"), 30);
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});
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test("parseFps clamps below the 24-60 bound to the 30 fallback", () => {
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assert.equal(parseFps(`<div data-fps="15"></div>`), 30);
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});
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test("parseFps clamps above the 24-60 bound to the 30 fallback", () => {
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assert.equal(parseFps(`<div data-fps="120"></div>`), 30);
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});
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test("parseFps falls back to 30 on an unparsable value", () => {
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assert.equal(parseFps(`<div data-fps="abc"></div>`), 30);
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});
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test("parseFps accepts the boundary values 24 and 60", () => {
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assert.equal(parseFps(`<div data-fps="24"></div>`), 24);
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assert.equal(parseFps(`<div data-fps="60"></div>`), 60);
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});
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