feat: enable permission-aware subagents

pi-subagents/test/env.test.ts

@@ -0,0 +1,61 @@
+import { execSync } from "node:child_process";
+import { mkdtempSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
+import { describe, expect, it } from "vitest";
+import { detectEnv } from "../src/env.js";
+
+/** Minimal mock of pi.exec() that shells out via child_process. */
+function mockPi(): ExtensionAPI {
+  return {
+    exec: async (command: string, args: string[], options?: { cwd?: string; timeout?: number }) => {
+      try {
+        const stdout = execSync(`${command} ${args.join(" ")}`, {
+          cwd: options?.cwd,
+          encoding: "utf-8",
+          stdio: ["pipe", "pipe", "pipe"],
+          timeout: options?.timeout,
+        });
+        return { stdout, stderr: "", code: 0, killed: false };
+      } catch (err: any) {
+        return { stdout: "", stderr: err.stderr ?? "", code: err.status ?? 1, killed: false };
+      }
+    },
+  } as unknown as ExtensionAPI;
+}
+
+describe("detectEnv", () => {
+  it("detects git repo in current project", async () => {
+    const env = await detectEnv(mockPi(), process.cwd());
+    expect(env.isGitRepo).toBe(true);
+    expect(env.platform).toBe(process.platform);
+  });
+
+  it("returns branch name when on a branch", async () => {
+    // Create a temp repo on a known branch to test branch detection
+    const tmpDir = mkdtempSync(join(tmpdir(), "pi-env-branch-"));
+    try {
+      execSync("git init && git config user.email test@test.com && git config user.name Test && git checkout -b test-branch && git commit --allow-empty -m init", {
+        cwd: tmpDir, stdio: "pipe",
+      });
+      const env = await detectEnv(mockPi(), tmpDir);
+      expect(env.isGitRepo).toBe(true);
+      expect(env.branch).toBe("test-branch");
+    } finally {
+      rmSync(tmpDir, { recursive: true, force: true });
+    }
+  });
+
+  it("detects non-git directory", async () => {
+    const tmpDir = mkdtempSync(join(tmpdir(), "pi-env-test-"));
+    try {
+      const env = await detectEnv(mockPi(), tmpDir);
+      expect(env.isGitRepo).toBe(false);
+      expect(env.branch).toBe("");
+      expect(env.platform).toBe(process.platform);
+    } finally {
+      rmSync(tmpDir, { recursive: true, force: true });
+    }
+  });
+});