fix: add git hook setup and stable config hash sorting

src/git-hooks.test.ts

@@ -0,0 +1,97 @@
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+import { describe, expect, it, vi } from "vitest";
+
+import {
+  filterOxfmtTargets,
+  filterOutPartialTargets,
+  findPartiallyStagedFiles,
+  splitNullDelimited,
+} from "../scripts/format-staged.js";
+import { setupGitHooks } from "../scripts/setup-git-hooks.js";
+
+function makeTempDir() {
+  return fs.mkdtempSync(path.join(os.tmpdir(), "clawdbot-hooks-"));
+}
+
+describe("format-staged helpers", () => {
+  it("splits null-delimited output", () => {
+    expect(splitNullDelimited("a\0b\0")).toEqual(["a", "b"]);
+    expect(splitNullDelimited("")).toEqual([]);
+  });
+
+  it("filters oxfmt targets", () => {
+    const targets = filterOxfmtTargets([
+      "src/app.ts",
+      "src/app.md",
+      "test/foo.tsx",
+      "scripts/dev.ts",
+      "test\\bar.js",
+    ]);
+    expect(targets).toEqual(["src/app.ts", "test/foo.tsx", "test/bar.js"]);
+  });
+
+  it("detects partially staged files", () => {
+    const partial = findPartiallyStagedFiles(
+      ["src/a.ts", "test/b.tsx"],
+      ["src/a.ts", "docs/readme.md"],
+    );
+    expect(partial).toEqual(["src/a.ts"]);
+  });
+
+  it("filters out partial targets", () => {
+    const filtered = filterOutPartialTargets(
+      ["src/a.ts", "test/b.tsx", "test/c.ts"],
+      ["test/b.tsx"],
+    );
+    expect(filtered).toEqual(["src/a.ts", "test/c.ts"]);
+  });
+});
+
+describe("setupGitHooks", () => {
+  it("returns git-missing when git is unavailable", () => {
+    const runGit = vi.fn(() => ({ status: 1, stdout: "" }));
+    const result = setupGitHooks({ repoRoot: "/tmp", runGit });
+    expect(result).toEqual({ ok: false, reason: "git-missing" });
+    expect(runGit).toHaveBeenCalled();
+  });
+
+  it("returns not-repo when not inside a work tree", () => {
+    const runGit = vi.fn((args) => {
+      if (args[0] === "--version") return { status: 0, stdout: "git version" };
+      if (args[0] === "rev-parse") return { status: 0, stdout: "false" };
+      return { status: 1, stdout: "" };
+    });
+
+    const result = setupGitHooks({ repoRoot: "/tmp", runGit });
+    expect(result).toEqual({ ok: false, reason: "not-repo" });
+  });
+
+  it("configures hooks path when inside a repo", () => {
+    const repoRoot = makeTempDir();
+    const hooksDir = path.join(repoRoot, "git-hooks");
+    fs.mkdirSync(hooksDir, { recursive: true });
+    const hookPath = path.join(hooksDir, "pre-commit");
+    fs.writeFileSync(hookPath, "#!/bin/sh\n", "utf-8");
+    fs.chmodSync(hookPath, 0o644);
+
+    const runGit = vi.fn((args) => {
+      if (args[0] === "--version") return { status: 0, stdout: "git version" };
+      if (args[0] === "rev-parse") return { status: 0, stdout: "true" };
+      if (args[0] === "config") return { status: 0, stdout: "" };
+      return { status: 1, stdout: "" };
+    });
+
+    const result = setupGitHooks({ repoRoot, runGit });
+    expect(result).toEqual({ ok: true });
+    expect(runGit.mock.calls.some(([args]) => args[0] === "config")).toBe(true);
+
+    if (process.platform !== "win32") {
+      const mode = fs.statSync(hookPath).mode & 0o777;
+      expect(mode & 0o100).toBeTruthy();
+    }
+
+    fs.rmSync(repoRoot, { recursive: true, force: true });
+  });
+});