23 lines
853 B
TypeScript
23 lines
853 B
TypeScript
import { describe, expect, it } from "vitest";
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import { updateDownloadSpeedHistory } from "../src/renderer/download-speed-state";
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describe("download speed history", () => {
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it("keeps the smoothed display and history across successive updates", () => {
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const first = updateDownloadSpeedHistory({ history: [], display: 0 }, 100, 10);
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const second = updateDownloadSpeedHistory(first, 100, 10);
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expect(second.display).toBeGreaterThan(first.display);
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expect(second.history).toHaveLength(2);
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expect(second.history[0]).toBe(first.display);
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});
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it("keeps only the configured number of samples", () => {
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let state = { history: [] as number[], display: 0 };
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for (let index = 0; index < 5; index += 1) {
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state = updateDownloadSpeedHistory(state, index + 1, 3);
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}
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expect(state.history).toHaveLength(3);
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});
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});
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