import { existsSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";import { tmpdir } from "node:os";import { join } from "node:path";import { afterEach, describe, expect, test } from "vitest";import { resolvePublishedSidecarBinary } from "../src/binary.js"; const ORIGINAL_AGENTOS_OVERRIDE = process.env.AGENTOS_SIDECAR_BIN;const ORIGINAL_NATIVE_OVERRIDE = process.env.AGENTOS_NATIVE_SIDECAR_BIN; afterEach(() => {	if (ORIGINAL_AGENTOS_OVERRIDE === undefined) {		delete process.env.AGENTOS_SIDECAR_BIN;	} else {		process.env.AGENTOS_SIDECAR_BIN = ORIGINAL_AGENTOS_OVERRIDE;	}	if (ORIGINAL_NATIVE_OVERRIDE === undefined) {		delete process.env.AGENTOS_NATIVE_SIDECAR_BIN;	} else {		process.env.AGENTOS_NATIVE_SIDECAR_BIN = ORIGINAL_NATIVE_OVERRIDE;	}}); describe("AgentOS runtime sidecar binary resolution", () => {	test("prefers the native override over the generic override", () => {		const root = mkdtempSync(join(tmpdir(), "agentos-native-sidecar-bin-"));		try {			const nativePath = join(root, "agentos-native-sidecar");			const genericPath = join(root, "agentos-sidecar");			writeFileSync(nativePath, "#!/bin/sh\n", { mode: 0o755 });			writeFileSync(genericPath, "#!/bin/sh\n", { mode: 0o755 });			process.env.AGENTOS_NATIVE_SIDECAR_BIN = nativePath;			process.env.AGENTOS_SIDECAR_BIN = genericPath; 			expect(resolvePublishedSidecarBinary()).toBe(nativePath);		} finally {			rmSync(root, { recursive: true, force: true });		}	}); 	test("honors AGENTOS_SIDECAR_BIN when the file exists", () => {		const root = mkdtempSync(join(tmpdir(), "agentos-native-sidecar-bin-"));		try {			delete process.env.AGENTOS_NATIVE_SIDECAR_BIN;			const binaryPath = join(root, "agentos-native-sidecar");			writeFileSync(binaryPath, "#!/bin/sh\n", { mode: 0o755 });			process.env.AGENTOS_SIDECAR_BIN = binaryPath; 			expect(resolvePublishedSidecarBinary()).toBe(binaryPath);		} finally {			rmSync(root, { recursive: true, force: true });		}	}); 	test("rejects a missing AGENTOS_SIDECAR_BIN override", () => {		delete process.env.AGENTOS_NATIVE_SIDECAR_BIN;		const binaryPath = join(			tmpdir(),			`agentos-native-sidecar-missing-${process.pid}-${Date.now()}`,		);		if (existsSync(binaryPath)) {			rmSync(binaryPath, { force: true });		}		process.env.AGENTOS_SIDECAR_BIN = binaryPath; 		expect(() => resolvePublishedSidecarBinary()).toThrow(			/native sidecar override is set to .* but the file does not exist/,		);	}); 	test("delegates to the AgentOS resolver package when no override is set", () => {		delete process.env.AGENTOS_NATIVE_SIDECAR_BIN;		delete process.env.AGENTOS_SIDECAR_BIN; 		try {			expect(resolvePublishedSidecarBinary()).toMatch(/agentos-native-sidecar/);		} catch (error) {			expect((error as Error).message).toMatch(				/@rivet-dev\/agentos-runtime-sidecar: platform package .* is not installed/,			);		}	});});