feat(llm-security): implement JetBrains discovery + Android Studio base dir

plugins/llm-security/tests/scanners/ide-extension-discovery.test.mjs

@@ -0,0 +1,100 @@
+// ide-extension-discovery.test.mjs — discoverJetBrainsExtensions integration tests.
+// All fixtures built in-test via mkdtemp + mkdir — no committed filesystem state.
+
+import { describe, it, after } from 'node:test';
+import assert from 'node:assert/strict';
+import { mkdtemp, mkdir, rm } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import {
+  discoverJetBrainsExtensions,
+  getAndroidStudioBaseDir,
+} from '../../scanners/lib/ide-extension-discovery.mjs';
+
+const TEST_PREFIX = 'llmsec-jbdisc-';
+const created = [];
+
+async function buildFixtureBase(layout) {
+  const base = await mkdtemp(join(tmpdir(), TEST_PREFIX));
+  created.push(base);
+  for (const [product, plugins] of Object.entries(layout)) {
+    for (const plug of plugins) {
+      await mkdir(join(base, product, 'plugins', plug), { recursive: true });
+    }
+  }
+  return base;
+}
+
+describe('discoverJetBrainsExtensions — basic walk', () => {
+  it('finds plugins under IntelliJIdea<version>/plugins/', async () => {
+    const base = await buildFixtureBase({
+      'IntelliJIdea2024.3': ['com.example.one', 'com.example.two'],
+    });
+    const res = await discoverJetBrainsExtensions({ rootsOverride: [base] });
+    assert.equal(res.extensions.length, 2);
+    assert.ok(res.extensions.every(e => e.type === 'jetbrains'));
+    assert.ok(res.extensions.some(e => e.name === 'com.example.one'));
+    assert.equal(res.extensions[0].productDir, 'IntelliJIdea2024.3');
+  });
+});
+
+describe('discoverJetBrainsExtensions — Fleet excluded', () => {
+  it('ignores Fleet directory', async () => {
+    const base = await buildFixtureBase({
+      'IntelliJIdea2024.3': ['com.example.good'],
+      'Fleet': ['com.example.fleet'],
+    });
+    const res = await discoverJetBrainsExtensions({ rootsOverride: [base] });
+    assert.equal(res.extensions.length, 1);
+    assert.equal(res.extensions[0].name, 'com.example.good');
+    assert.ok(res.extensions.every(e => !e.location.includes('Fleet')));
+  });
+});
+
+describe('discoverJetBrainsExtensions — Android Studio support', () => {
+  it('discovers from AndroidStudio product dir', async () => {
+    const base = await buildFixtureBase({
+      'AndroidStudio2024.3.1': ['com.google.example'],
+    });
+    const res = await discoverJetBrainsExtensions({ rootsOverride: [base] });
+    assert.equal(res.extensions.length, 1);
+    assert.equal(res.extensions[0].productDir, 'AndroidStudio2024.3.1');
+  });
+});
+
+describe('discoverJetBrainsExtensions — multi-product', () => {
+  it('walks all matching product dirs', async () => {
+    const base = await buildFixtureBase({
+      'IntelliJIdea2024.3': ['a'],
+      'PyCharm2024.3': ['b'],
+      'GoLand2024.3': ['c'],
+      'Toolbox': ['d'], // excluded
+    });
+    const res = await discoverJetBrainsExtensions({ rootsOverride: [base] });
+    assert.equal(res.extensions.length, 3);
+    assert.ok(!res.extensions.some(e => e.location.includes('Toolbox')));
+  });
+});
+
+describe('discoverJetBrainsExtensions — skip hidden + disabled_plugins.txt', () => {
+  it('ignores dotfile plugins and disabled_plugins.txt', async () => {
+    const base = await buildFixtureBase({
+      'IntelliJIdea2024.3': ['.hidden', 'com.real', 'disabled_plugins.txt'],
+    });
+    const res = await discoverJetBrainsExtensions({ rootsOverride: [base] });
+    assert.equal(res.extensions.length, 1);
+    assert.equal(res.extensions[0].name, 'com.real');
+  });
+});
+
+describe('getAndroidStudioBaseDir — Linux path divergence', () => {
+  it('is a path-producing function (no exception)', () => {
+    // Actual return value is null or a path depending on host — just assert no throw.
+    const v = getAndroidStudioBaseDir();
+    assert.ok(v === null || typeof v === 'string');
+  });
+});
+
+after(async () => {
+  for (const r of created) await rm(r, { recursive: true, force: true }).catch(() => {});
+});