import { describe, expect, it } from "vitest";

import {

buildCopilotAssistantUsage,

deriveCopilotUsageTotal,

normalizeCopilotUsage,

} from "./usage-bridge.js";

});

});

describe("deriveCopilotUsageTotal", () => {

it("returns undefined when usage is undefined", () => {

expect(deriveCopilotUsageTotal(undefined)).toBeUndefined();

});

it("sums input/output/cacheRead/cacheWrite for total", () => {

const usage: NormalizedUsage = {

cacheRead: 3,

cacheWrite: 4,

input: 1,

output: 2,

total: 999,

};

expect(deriveCopilotUsageTotal(usage)).toBe(10);

});

});

});