feat: vendor permission system source

pi-permission-system/test/extension-paths.test.ts

@@ -0,0 +1,108 @@
+import { join } from "node:path";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const { mockDiscoverGlobalNodeModulesRoot } = vi.hoisted(() => ({
+  mockDiscoverGlobalNodeModulesRoot: vi.fn<() => string | null>(),
+}));
+
+vi.mock("../src/node-modules-discovery", () => ({
+  discoverGlobalNodeModulesRoot: mockDiscoverGlobalNodeModulesRoot,
+}));
+
+import { getGlobalLogsDir } from "#src/config-paths";
+import { computeExtensionPaths } from "#src/extension-paths";
+
+describe("computeExtensionPaths", () => {
+  beforeEach(() => {
+    mockDiscoverGlobalNodeModulesRoot.mockReset();
+    mockDiscoverGlobalNodeModulesRoot.mockReturnValue(
+      "/mock/global/node_modules",
+    );
+  });
+
+  it("sets agentDir from argument", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.agentDir).toBe("/test/agent");
+  });
+
+  it("derives sessionsDir as agentDir/sessions", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.sessionsDir).toBe("/test/agent/sessions");
+  });
+
+  it("derives subagentSessionsDir as agentDir/subagent-sessions", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.subagentSessionsDir).toBe("/test/agent/subagent-sessions");
+  });
+
+  it("derives forwardingDir as sessionsDir/permission-forwarding", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.forwardingDir).toBe(
+      join("/test/agent/sessions", "permission-forwarding"),
+    );
+  });
+
+  it("derives globalLogsDir via getGlobalLogsDir(agentDir)", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.globalLogsDir).toBe(getGlobalLogsDir("/test/agent"));
+  });
+
+  it("includes agentDir in piInfrastructureDirs", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.piInfrastructureDirs).toContain("/test/agent");
+  });
+
+  it("includes agentDir/git in piInfrastructureDirs", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.piInfrastructureDirs).toContain("/test/agent/git");
+  });
+
+  it("includes discovered global node_modules root in piInfrastructureDirs", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.piInfrastructureDirs).toContain("/mock/global/node_modules");
+  });
+
+  it("omits global node_modules from piInfrastructureDirs when discovery returns null", () => {
+    mockDiscoverGlobalNodeModulesRoot.mockReturnValue(null);
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.piInfrastructureDirs).toHaveLength(2);
+    expect(paths.piInfrastructureDirs).toContain("/test/agent");
+    expect(paths.piInfrastructureDirs).toContain("/test/agent/git");
+  });
+
+  it("all entries in piInfrastructureDirs are strings (no null)", () => {
+    mockDiscoverGlobalNodeModulesRoot.mockReturnValue(null);
+    const paths = computeExtensionPaths("/test/agent");
+    for (const dir of paths.piInfrastructureDirs) {
+      expect(typeof dir).toBe("string");
+    }
+  });
+
+  it("includes piPackageDir in piInfrastructureDirs when provided", () => {
+    const paths = computeExtensionPaths("/test/agent", "/pi/install");
+    expect(paths.piInfrastructureDirs).toContain("/pi/install");
+  });
+
+  it("omits piPackageDir when not provided (current behavior preserved)", () => {
+    const paths = computeExtensionPaths("/test/agent");
+    expect(paths.piInfrastructureDirs).toEqual([
+      "/test/agent",
+      "/test/agent/git",
+      "/mock/global/node_modules",
+    ]);
+  });
+
+  it("omits piPackageDir when given an empty string", () => {
+    const paths = computeExtensionPaths("/test/agent", "");
+    expect(paths.piInfrastructureDirs).not.toContain("");
+  });
+
+  it("two calls with different agentDirs produce independent results", () => {
+    const a = computeExtensionPaths("/agent/a");
+    const b = computeExtensionPaths("/agent/b");
+    expect(a.agentDir).toBe("/agent/a");
+    expect(b.agentDir).toBe("/agent/b");
+    expect(a.sessionsDir).toBe("/agent/a/sessions");
+    expect(b.sessionsDir).toBe("/agent/b/sessions");
+  });
+});