From 0874739c028b9969172d83473f32514e06f3669e Mon Sep 17 00:00:00 2001
From: Chris Tate <chris@ctate.dev>
Date: Mon, 12 Oct 2026 00:07:55 -0500
Subject: [PATCH] Run the frontend services test's compiler and processes off
 the test worker

---
 .../self-hosting-frontend-services.test.ts    | 62 ++++++++++---------
 1 file changed, 34 insertions(+), 28 deletions(-)

diff --git a/tests/harness/self-hosting-frontend-services.test.ts b/tests/harness/self-hosting-frontend-services.test.ts
index 8216c3aa03..d294f5cdde 100644
--- a/tests/harness/self-hosting-frontend-services.test.ts
+++ b/tests/harness/self-hosting-frontend-services.test.ts
@@ -1,12 +1,12 @@
-import { execFileSync, spawnSync } from "node:child_process";
 import { mkdirSync, mkdtempSync, readFileSync, realpathSync, rmSync, writeFileSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { analyze, compile } from "@scriptc/compiler";
 import { expect, test } from "vitest";
 import { ts7Executable } from "../../packages/compiler/src/frontend/ts7/rpc-api.js";
 
 import { npmFetchCases } from "../../packages/compiler/test/npm-fetch-cases.js";
+import { analyzeInChild, compileInChild } from "./self-hosting-compiler-process.js";
+import { spawnResult } from "./spawn-result.js";
 
 const root = join(import.meta.dirname, "../..");
 const entry = join(root, "tests/fixtures/self-hosting/frontend-services.ts");
@@ -69,17 +69,23 @@ for (const backend of ["llvm"] as const) {
     );
     try {
       const object = join(directory, "process.o");
-      execFileSync("clang", [
-        "-std=c11",
-        "-Wall",
-        "-Wextra",
-        "-Werror",
-        ...(sanitize ? ["-fsanitize=address"] : []),
-        "-c",
-        join(nativeSources, "ts7-process.c"),
-        "-o",
-        object,
-      ]);
+      const clang = await spawnResult(
+        "clang",
+        [
+          "-std=c11",
+          "-Wall",
+          "-Wextra",
+          "-Werror",
+          ...(sanitize ? ["-fsanitize=address"] : []),
+          "-c",
+          join(nativeSources, "ts7-process.c"),
+          "-o",
+          object,
+        ],
+        { cwd: root, timeout: 120_000 },
+      );
+      expect(clang.error).toBeUndefined();
+      expect(clang.status, clang.stderr.toString()).toBe(0);
       const profile = join(directory, "ffi.json");
       writeFileSync(
         profile,
@@ -88,13 +94,13 @@ for (const backend of ["llvm"] as const) {
           libraries: [object],
         }),
       );
-      const { coverage } = analyze(entry, { dynamic: false, ffiProfilePath: profile });
+      const coverage = await analyzeInChild(entry, { dynamic: false, ffiProfilePath: profile });
       expect(coverage.preflightFailed, JSON.stringify(coverage.diagnostics)).toBe(false);
       expect(coverage.diagnostics).toEqual([]);
       expect(coverage.stats.statementsFailed).toBe(0);
       expect(coverage.stats.statementsIsland).toBe(0);
       expect(coverage.stats.functionsSkipped).toBe(0);
-      const built = await compile(entry, {
+      const built = await compileInChild(entry, {
         backend,
         dynamic: false,
         optimization: "dev",
@@ -108,25 +114,25 @@ for (const backend of ["llvm"] as const) {
       const request = join(directory, "request.json");
       writeFileSync(request, JSON.stringify(input(directory)));
       const expected = join(directory, "node.json");
-      const node = spawnSync(
+      const node = await spawnResult(
         process.execPath,
         ["--import", "tsx", oracle, ts7Executable(), request, expected],
-        { encoding: "utf8", timeout: 45_000 },
+        { cwd: root, timeout: 45_000 },
       );
-      expect(node.error, node.stderr).toBeUndefined();
-      expect(node.status, node.stderr).toBe(0);
-      expect(node.stdout).toBe("");
-      expect(node.stderr).toBe("");
+      expect(node.error, node.stderr.toString()).toBeUndefined();
+      expect(node.status, node.stderr.toString()).toBe(0);
+      expect(node.stdout.toString()).toBe("");
+      expect(node.stderr.toString()).toBe("");
       const report = join(directory, "native.json");
-      const run = spawnSync(built.binaryPath, [ts7Executable(), request, report], {
-        encoding: "utf8",
+      const run = await spawnResult(built.binaryPath, [ts7Executable(), request, report], {
+        cwd: root,
         timeout: 45_000,
       });
-      expect(run.error, run.stderr).toBeUndefined();
-      expect(run.signal, run.stderr).toBeNull();
-      expect(run.status, run.stderr).toBe(0);
-      expect(run.stdout).toBe(node.stdout);
-      expect(run.stderr).toBe(node.stderr);
+      expect(run.error, run.stderr.toString()).toBeUndefined();
+      expect(run.signal, run.stderr.toString()).toBeNull();
+      expect(run.status, run.stderr.toString()).toBe(0);
+      expect(run.stdout.toString()).toBe(node.stdout.toString());
+      expect(run.stderr.toString()).toBe(node.stderr.toString());
       const result = JSON.parse(readFileSync(report, "utf8"));
       expect(result).toEqual(JSON.parse(readFileSync(expected, "utf8")));
       expect(result.fetch).toEqual(