mirror of
https://github.com/oven-sh/bun
synced 2026-02-09 10:28:47 +00:00
c5f9d2f758
Implements process.threadCpuUsage() to return the current thread's CPU usage, matching Node.js behavior. Platform-specific implementations: - macOS: Uses mach_thread_self() and thread_info() - Linux: Uses getrusage(RUSAGE_THREAD) or getrusage(RUSAGE_LWP) as fallback - Windows: Uses libuv's uv_getrusage_thread() Returns an object with user and system CPU time in microseconds, and supports an optional previous value parameter to calculate the difference. Fixes issue #23890 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
68 lines
2.4 KiB
TypeScript
68 lines
2.4 KiB
TypeScript
import { expect, test } from "bun:test";
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test("process.threadCpuUsage returns valid result", () => {
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const result = process.threadCpuUsage();
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expect(result).toHaveProperty("user");
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expect(result).toHaveProperty("system");
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expect(typeof result.user).toBe("number");
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expect(typeof result.system).toBe("number");
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expect(result.user).toBeGreaterThanOrEqual(0);
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expect(result.system).toBeGreaterThanOrEqual(0);
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expect(Number.isFinite(result.user)).toBe(true);
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expect(Number.isFinite(result.system)).toBe(true);
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});
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test("process.threadCpuUsage with previous value", () => {
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const start = process.threadCpuUsage();
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// Do some CPU work
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for (let i = 0; i < 100000; i++) {
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Math.sqrt(i);
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}
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const diff = process.threadCpuUsage(start);
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expect(diff).toHaveProperty("user");
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expect(diff).toHaveProperty("system");
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expect(diff.user).toBeGreaterThanOrEqual(0);
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expect(diff.system).toBeGreaterThanOrEqual(0);
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});
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test("process.threadCpuUsage increases over time", () => {
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const usage1 = process.threadCpuUsage();
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// Do some CPU work
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for (let i = 0; i < 100000; i++) {
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Math.sqrt(i);
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}
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const usage2 = process.threadCpuUsage();
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expect(usage2.user).toBeGreaterThanOrEqual(usage1.user);
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expect(usage2.system).toBeGreaterThanOrEqual(usage1.system);
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});
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test("process.threadCpuUsage throws on invalid argument type", () => {
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expect(() => process.threadCpuUsage(123 as any)).toThrow();
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expect(() => process.threadCpuUsage("invalid" as any)).toThrow();
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});
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test("process.threadCpuUsage throws on invalid prevValue.user", () => {
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expect(() => process.threadCpuUsage({} as any)).toThrow();
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expect(() => process.threadCpuUsage({ user: "a" } as any)).toThrow();
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expect(() => process.threadCpuUsage({ user: null } as any)).toThrow();
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});
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test("process.threadCpuUsage throws on invalid prevValue.system", () => {
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expect(() => process.threadCpuUsage({ user: 3, system: "b" } as any)).toThrow();
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expect(() => process.threadCpuUsage({ user: 3, system: null } as any)).toThrow();
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});
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test("process.threadCpuUsage throws on out-of-range values", () => {
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expect(() => process.threadCpuUsage({ user: -1, system: 2 })).toThrow();
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expect(() => process.threadCpuUsage({ user: Number.POSITIVE_INFINITY, system: 4 })).toThrow();
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expect(() => process.threadCpuUsage({ user: 3, system: -2 })).toThrow();
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expect(() => process.threadCpuUsage({ user: 5, system: Number.NEGATIVE_INFINITY })).toThrow();
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});
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