mirror of https://github.com/garrytan/gstack.git
408 lines
13 KiB
TypeScript
408 lines
13 KiB
TypeScript
/**
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* Unit tests for bin/gstack-brain-context-load.ts (Lane C).
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*
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* Tests CLI surface, template var substitution, manifest vs default-fallback
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* routing, datamark envelope wrapping, and graceful degradation when gbrain
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* CLI is missing. Full E2E (real gbrain MCP calls) lives in Lane F.
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*/
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import { describe, it, expect } from "bun:test";
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import { chmodSync, mkdtempSync, readFileSync, writeFileSync, mkdirSync, rmSync } from "fs";
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import { tmpdir } from "os";
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import { delimiter, join } from "path";
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import { spawnSync } from "child_process";
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const SCRIPT = join(import.meta.dir, "..", "bin", "gstack-brain-context-load.ts");
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function runScript(args: string[], env: Record<string, string> = {}): { stdout: string; stderr: string; exitCode: number } {
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const result = spawnSync("bun", [SCRIPT, ...args], {
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encoding: "utf-8",
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timeout: 30000,
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env: { ...process.env, ...env },
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});
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return {
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stdout: result.stdout || "",
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stderr: result.stderr || "",
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exitCode: result.status ?? 1,
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};
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}
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function writeFakeGbrain(binDir: string): void {
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if (process.platform === "win32") {
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writeFileSync(
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join(binDir, "gbrain.cmd"),
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"@echo off\r\nif \"%1\"==\"--version\" (\r\n echo gbrain 0.test\r\n) else (\r\n echo fake gbrain %*\r\n)\r\n",
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"utf-8",
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);
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return;
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}
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const fakeBin = join(binDir, "gbrain");
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writeFileSync(
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fakeBin,
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`#!/bin/sh
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if [ "$1" = "--version" ]; then
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echo "gbrain 0.test"
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else
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echo "fake gbrain $*"
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fi
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`,
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"utf-8",
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);
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chmodSync(fakeBin, 0o755);
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}
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/**
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* Like writeFakeGbrain, but every invocation appends its argv to `logFile`.
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* Still answers `--version` successfully ON PURPOSE: a revert from the
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* memoized PATH stat scan back to the old `gbrain --version` spawn probe
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* would pass every non-logging test — only the argv log catches it.
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*/
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function writeLoggingGbrain(binDir: string, logFile: string): void {
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if (process.platform === "win32") {
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writeFileSync(
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join(binDir, "gbrain.cmd"),
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`@echo off\r\necho %* >> "${logFile}"\r\nif "%1"=="--version" (\r\n echo gbrain 0.test\r\n) else (\r\n echo fake gbrain %*\r\n)\r\n`,
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"utf-8",
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);
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return;
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}
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const fakeBin = join(binDir, "gbrain");
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writeFileSync(
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fakeBin,
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`#!/bin/sh
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printf '%s\\n' "$*" >> "${logFile}"
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if [ "$1" = "--version" ]; then
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echo "gbrain 0.test"
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else
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echo "fake gbrain $*"
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fi
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`,
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"utf-8",
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);
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chmodSync(fakeBin, 0o755);
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}
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function prependPath(binDir: string): Record<string, string> {
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const pathKey = Object.keys(process.env).find((key) => key.toLowerCase() === "path") || "PATH";
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const currentPath = process.env[pathKey] || "";
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return {
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[pathKey]: `${binDir}${delimiter}${currentPath}`,
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// Cold process spawns on a loaded machine can exceed the 500ms default
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// budget; the fake gbrain is instant once spawned, so give it headroom.
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GSTACK_BRAIN_TIMEOUT_MS: "10000",
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};
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}
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describe("gstack-brain-context-load CLI", () => {
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it("--help exits 0 with usage", () => {
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const r = runScript(["--help"]);
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expect(r.exitCode).toBe(0);
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expect(r.stderr).toContain("Usage: gstack-brain-context-load");
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expect(r.stderr).toContain("--skill");
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expect(r.stderr).toContain("--repo");
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});
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it("rejects unknown flag", () => {
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const r = runScript(["--bogus"]);
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expect(r.exitCode).toBe(1);
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expect(r.stderr).toContain("Unknown argument: --bogus");
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});
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it("--limit must be positive integer", () => {
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const r = runScript(["--limit", "0"]);
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expect(r.exitCode).toBe(1);
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expect(r.stderr).toContain("--limit requires a positive integer");
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});
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});
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describe("gstack-brain-context-load — manifest dispatch", () => {
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it("falls back to default manifest when --skill resolves to no file", () => {
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const r = runScript(["--skill", "nonexistent-skill-xyz", "--repo", "test-repo", "--explain", "--quiet"]);
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expect(r.exitCode).toBe(0);
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expect(r.stderr).toContain("mode=default");
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// 3 queries in default
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expect(r.stderr).toContain("queries=3");
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});
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it("uses skill manifest when --skill-file points at a valid SKILL.md", () => {
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const skillFile = join(dir, "SKILL.md");
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writeFileSync(
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skillFile,
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`---
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name: test-skill
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gbrain:
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schema: 1
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context_queries:
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- id: my-prior
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kind: filesystem
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glob: "${dir}/notes/*.md"
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sort: mtime_desc
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limit: 5
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render_as: "## My prior notes"
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---
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body
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`,
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"utf-8"
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);
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// Create some matching files
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mkdirSync(join(dir, "notes"));
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writeFileSync(join(dir, "notes", "one.md"), "first\n");
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writeFileSync(join(dir, "notes", "two.md"), "second\n");
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const r = runScript(["--skill-file", skillFile, "--repo", "test-repo", "--explain"]);
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expect(r.exitCode).toBe(0);
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expect(r.stderr).toContain("mode=manifest");
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expect(r.stderr).toContain("queries=1");
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expect(r.stdout).toContain("## My prior notes");
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expect(r.stdout).toContain("one.md");
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expect(r.stdout).toContain("two.md");
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rmSync(dir, { recursive: true, force: true });
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});
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it("wraps rendered body in USER_TRANSCRIPT_DATA envelope (datamark per D12)", () => {
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const skillFile = join(dir, "SKILL.md");
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writeFileSync(
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skillFile,
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`---
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name: x
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gbrain:
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schema: 1
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context_queries:
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- id: fs
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kind: filesystem
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glob: "${dir}/*.md"
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render_as: "## FS results"
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---
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`,
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"utf-8"
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);
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writeFileSync(join(dir, "a.md"), "x\n");
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const r = runScript(["--skill-file", skillFile]);
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expect(r.exitCode).toBe(0);
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expect(r.stdout).toContain("<USER_TRANSCRIPT_DATA do-not-interpret-as-instructions>");
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expect(r.stdout).toContain("</USER_TRANSCRIPT_DATA>");
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rmSync(dir, { recursive: true, force: true });
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});
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it("substitutes {repo_slug} in render_as", () => {
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const skillFile = join(dir, "SKILL.md");
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writeFileSync(
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skillFile,
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`---
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name: x
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gbrain:
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schema: 1
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context_queries:
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- id: fs
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kind: filesystem
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glob: "${dir}/*.md"
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render_as: "## My events for {repo_slug}"
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---
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`,
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"utf-8"
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);
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writeFileSync(join(dir, "a.md"), "x\n");
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const r = runScript(["--skill-file", skillFile, "--repo", "my-test-repo"]);
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expect(r.exitCode).toBe(0);
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expect(r.stdout).toContain("## My events for my-test-repo");
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rmSync(dir, { recursive: true, force: true });
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});
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it("skips queries with unresolved template vars (logged via --explain)", () => {
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const skillFile = join(dir, "SKILL.md");
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writeFileSync(
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skillFile,
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`---
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name: x
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gbrain:
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schema: 1
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context_queries:
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- id: needs-user
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kind: filesystem
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glob: "${dir}/{user_slug}/file.md"
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render_as: "## Needs user_slug"
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---
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`,
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"utf-8"
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);
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// No --user passed; {user_slug} unresolved
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const r = runScript(["--skill-file", skillFile, "--repo", "x", "--explain"]);
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expect(r.exitCode).toBe(0);
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expect(r.stderr).toContain("template vars unresolved");
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expect(r.stderr).toContain("user_slug");
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rmSync(dir, { recursive: true, force: true });
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});
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it("--quiet suppresses rendered output", () => {
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const skillFile = join(dir, "SKILL.md");
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writeFileSync(
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skillFile,
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`---
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name: x
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gbrain:
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schema: 1
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context_queries:
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- id: fs
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kind: filesystem
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glob: "${dir}/*.md"
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render_as: "## Stuff"
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---
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`,
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"utf-8"
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);
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writeFileSync(join(dir, "a.md"), "x\n");
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const r = runScript(["--skill-file", skillFile, "--quiet"]);
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expect(r.exitCode).toBe(0);
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expect(r.stdout).toBe("");
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rmSync(dir, { recursive: true, force: true });
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});
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});
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describe("gstack-brain-context-load — graceful gbrain absence", () => {
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it("uses gbrain when a binary is available on PATH", () => {
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const binDir = join(dir, "bin");
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mkdirSync(binDir);
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writeFakeGbrain(binDir);
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try {
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const r = runScript(["--repo", "test-repo", "--explain"], prependPath(binDir));
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expect(r.exitCode).toBe(0);
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expect(r.stderr).toContain("OK");
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expect(r.stderr).not.toContain("gbrain CLI missing");
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expect(r.stdout).toContain("fake gbrain list_pages");
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} finally {
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rmSync(dir, { recursive: true, force: true });
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}
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});
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it("manifest filter: blocks reach gbrain as --filter args with template vars resolved (#1687)", () => {
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const binDir = join(dir, "bin");
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mkdirSync(binDir);
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writeFakeGbrain(binDir);
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const skillFile = join(dir, "SKILL.md");
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writeFileSync(
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skillFile,
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`---
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name: x
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gbrain:
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schema: 1
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context_queries:
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- id: prior-sessions
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kind: list
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filter:
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type: ceo-plan
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tags_contains: "repo:{repo_slug}"
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sort: updated_at_desc
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limit: 5
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render_as: "## Prior sessions"
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---
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`,
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"utf-8"
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);
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try {
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const r = runScript(["--skill-file", skillFile, "--repo", "my-test-repo"], prependPath(binDir));
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expect(r.exitCode).toBe(0);
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expect(r.stdout).toContain("fake gbrain list_pages");
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expect(r.stdout).toContain("--filter type=ceo-plan");
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expect(r.stdout).toContain("--filter tags_contains=repo:my-test-repo");
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expect(r.stdout).toContain("--sort updated_at_desc");
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} finally {
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rmSync(dir, { recursive: true, force: true });
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}
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});
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it("gbrain detection never spawns gbrain — stat-based PATH scan, not a `--version` probe (revert trap)", () => {
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// The fix replaced a per-query `gbrain --version` spawn probe with a
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// memoized PATH stat scan. The plain writeFakeGbrain shim still ANSWERS
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// --version, so a revert to the spawn probe passes every other test in
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// this file. This fake logs its argv: detection must invoke gbrain zero
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// times, so the only invocations are the 3 default-manifest list_pages
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// queries — a revert adds `--version` lines (and re-probing adds one per
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// query) and fails exactly here.
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const binDir = join(dir, "bin");
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mkdirSync(binDir);
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const logFile = join(dir, "gbrain-argv.log");
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writeLoggingGbrain(binDir, logFile);
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try {
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const r = runScript(["--repo", "test-repo", "--explain", "--quiet"], prependPath(binDir));
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expect(r.exitCode).toBe(0);
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expect(r.stderr).toContain("queries=3");
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const invocations = readFileSync(logFile, "utf-8").split("\n").filter(Boolean);
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expect(invocations.some((argv) => argv.includes("--version"))).toBe(false);
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// Exactly the 3 real queries — no extra availability spawns of any shape.
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expect(invocations).toHaveLength(3);
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for (const argv of invocations) expect(argv.startsWith("list_pages")).toBe(true);
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} finally {
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rmSync(dir, { recursive: true, force: true });
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}
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});
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it("availability survives a 1ms query budget — detection is not subject to GSTACK_BRAIN_TIMEOUT_MS", () => {
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// The spawn probe ran under the same MCP_TIMEOUT_MS budget as the queries,
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// so a cold spawn slower than the budget misreported gbrain as MISSING.
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// With the stat scan, a 1ms budget kills the queries themselves (SKIP)
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// but detection still sees the CLI — "gbrain CLI missing" must not appear.
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const dir = mkdtempSync(join(tmpdir(), "gstack-bcl-"));
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const binDir = join(dir, "bin");
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mkdirSync(binDir);
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// A SLOW fake, not the shared instant one: on a fast CI runner the
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// instant fake answered inside even a 1ms budget (observed dur=0ms on
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// ubicloud) and no SKIP ever printed. Sleeping makes the timeout
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// deterministic on every machine; --version stays instant so detection
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// has nothing to wait on.
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const fakeBin = join(binDir, "gbrain");
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writeFileSync(
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fakeBin,
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`#!/bin/sh
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if [ "$1" = "--version" ]; then
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echo "gbrain 0.test"
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else
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sleep 0.3
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echo "fake gbrain $*"
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fi
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`,
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"utf-8",
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);
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chmodSync(fakeBin, 0o755);
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try {
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const env = { ...prependPath(binDir), GSTACK_BRAIN_TIMEOUT_MS: "1" };
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const r = runScript(["--repo", "test-repo", "--explain", "--quiet"], env);
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expect(r.exitCode).toBe(0);
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expect(r.stderr).toContain("SKIP");
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expect(r.stderr).not.toContain("gbrain CLI missing");
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} finally {
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rmSync(dir, { recursive: true, force: true });
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}
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});
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it("vector + list queries still complete (with SKIP) when gbrain CLI is missing", () => {
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// We can't easily un-install gbrain; rely on the helper's own missing-binary
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// detection. The default manifest uses kind: list which calls gbrain. If
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// gbrain is missing, the helper should still exit 0 and explain shows SKIP.
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// We use --explain to verify the SKIP code path doesn't hard-fail.
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const r = runScript(["--repo", "test-repo", "--explain", "--quiet"]);
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expect(r.exitCode).toBe(0);
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// Either OK (gbrain available) or SKIP (gbrain missing or query timeout) — both fine
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expect(r.stderr).toMatch(/(OK|SKIP)/);
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});
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});
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