83 lines
3.0 KiB
JavaScript
83 lines
3.0 KiB
JavaScript
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import test from "node:test";
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import assert from "node:assert/strict";
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import {
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timestampLabel,
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seekSeconds,
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sourceLabel,
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matchLabel,
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PreviewRevision,
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} from "../src/media-display.ts";
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import { LatestLane } from "../src/search-state.ts";
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const settle = () => new Promise((resolve) => setImmediate(resolve));
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test("millisecond seeks preserve fractions and readable minute labels", () => {
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assert.equal(timestampLabel(125450), "2:05");
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assert.equal(timestampLabel(3600000), "60:00");
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assert.equal(seekSeconds({ kind: "timestamp_ms", number: 125450 }), 125.45);
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assert.equal(seekSeconds({ kind: "page", number: 4 }), undefined);
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assert.equal(seekSeconds({ kind: "timestamp_ms", number: -1 }), undefined);
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assert.equal(timestampLabel(Infinity), "Unknown time");
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assert.equal(sourceLabel({ kind: "image", number: 0 }), "Image");
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assert.equal(matchLabel("semantic_audio"), "Audio meaning");
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assert.equal(matchLabel("semantic_video"), "Video frame meaning");
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});
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test("another timestamp in the same movie invalidates older preparations", () => {
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const gate = new PreviewRevision();
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const first = gate.select("movie:1000");
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assert.equal(gate.select("movie:1000").changed, false);
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const second = gate.select("movie:3000");
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assert.equal(gate.accepts(first.revision), false);
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assert.equal(gate.accepts(second.revision), true);
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gate.clear();
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assert.equal(gate.accepts(second.revision), false);
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});
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test("one active preview and only latest pending reject stale output", async () => {
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const gate = new PreviewRevision();
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const executed = [];
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const accepted = [];
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let release;
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const lane = new LatestLane(
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async (request) => {
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executed.push(request.path);
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if (request.path === "first")
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await new Promise((resolve) => {
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release = resolve;
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});
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if (gate.accepts(request.revision)) accepted.push(request.path);
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},
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(request) => gate.accepts(request.revision),
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() => assert.fail("Unexpected preview failure"),
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);
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lane.submit({ path: "first", revision: gate.select("first").revision });
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lane.submit({ path: "middle", revision: gate.select("middle").revision });
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lane.submit({ path: "latest", revision: gate.select("latest").revision });
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release();
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await settle();
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assert.deepEqual(executed, ["first", "latest"]);
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assert.deepEqual(accepted, ["latest"]);
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});
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test("Escape clears queued preparation and rejects active output", async () => {
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const gate = new PreviewRevision();
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let release;
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const accepted = [];
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const lane = new LatestLane(
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async (request) => {
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await new Promise((resolve) => {
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release = resolve;
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});
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if (gate.accepts(request.revision)) accepted.push(request.path);
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},
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(request) => gate.accepts(request.revision),
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() => assert.fail("Unexpected preview failure"),
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);
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lane.submit({ path: "one", revision: gate.select("one").revision });
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lane.submit({ path: "two", revision: gate.select("two").revision });
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gate.clear();
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lane.clear();
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release();
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await settle();
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assert.deepEqual(accepted, []);
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});
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