diff --git a/.ai-context-generator-cli/tests/dependencyAnalyzer.test.ts b/.ai-context-generator-cli/tests/dependencyAnalyzer.test.ts
new file mode 100644
index 0000000..a9c13fc
--- /dev/null
+++ b/.ai-context-generator-cli/tests/dependencyAnalyzer.test.ts
@@ -0,0 +1,225 @@
+import * as fs from 'fs';
+import * as path from 'path';
+import { DependencyAnalyzer } from '../src/analyzers/dependencyAnalyzer';
+
+describe('DependencyAnalyzer', () => {
+  let analyzer: DependencyAnalyzer;
+  let testDir: string;
+
+  beforeEach(async () => {
+    analyzer = new DependencyAnalyzer();
+    testDir = path.join('/tmp', `ai-context-test-${Date.now()}`);
+    await fs.promises.mkdir(testDir, { recursive: true });
+  });
+
+  afterEach(async () => {
+    if (await fs.promises.stat(testDir).catch(() => null)) {
+      await fs.promises.rm(testDir, { recursive: true });
+    }
+  });
+
+  describe('analyze', () => {
+    it('should parse package.json dependencies correctly', async () => {
+      const packageJson = {
+        dependencies: {
+          express: '^4.18.0',
+          lodash: '^4.17.21',
+        },
+        devDependencies: {
+          jest: '^29.0.0',
+          typescript: '^5.0.0',
+        },
+      };
+      await fs.promises.writeFile(
+        path.join(testDir, 'package.json'),
+        JSON.stringify(packageJson)
+      );
+
+      const result = await analyzer.analyze(testDir, false);
+
+      expect(result.total).toBe(2);
+      expect(result.direct.length).toBe(2);
+      expect(result.direct.find(d => d.name === 'express')?.version).toBe('^4.18.0');
+      expect(result.dev.length).toBe(0);
+    });
+
+    it('should include dev dependencies when requested', async () => {
+      const packageJson = {
+        dependencies: { express: '^4.18.0' },
+        devDependencies: { jest: '^29.0.0' },
+      };
+      await fs.promises.writeFile(
+        path.join(testDir, 'package.json'),
+        JSON.stringify(packageJson)
+      );
+
+      const result = await analyzer.analyze(testDir, true);
+
+      expect(result.total).toBe(2);
+      expect(result.dev.length).toBe(1);
+      expect(result.dev[0].name).toBe('jest');
+    });
+
+    it('should parse requirements.txt dependencies', async () => {
+      await fs.promises.writeFile(
+        path.join(testDir, 'requirements.txt'),
+        `django>=4.0.0
+flask>=2.0.0
+requests==2.28.0
+numpy~=1.24.0`
+      );
+
+      const result = await analyzer.analyze(testDir, false);
+
+      expect(result.total).toBeGreaterThan(0);
+      const deps = result.direct.map(d => d.name);
+      expect(deps).toContain('django');
+      expect(deps).toContain('flask');
+      expect(deps).toContain('requests');
+    });
+
+    it('should parse go.mod dependencies', async () => {
+      await fs.promises.writeFile(
+        path.join(testDir, 'go.mod'),
+        `module example.com/mymodule
+
+go 1.21
+
+require (
+	github.com/gin-gonic/gin v1.9.0
+	github.com/stretchr/testify v1.8.0
+)`
+      );
+
+      const result = await analyzer.analyze(testDir, false);
+
+      expect(result.total).toBeGreaterThan(0);
+      const deps = result.direct.map(d => d.name);
+      expect(deps).toContain('github.com/gin-gonic/gin');
+    });
+
+    it('should parse Cargo.toml dependencies', async () => {
+      await fs.promises.writeFile(
+        path.join(testDir, 'Cargo.toml'),
+        `[package]
+name = "myproject"
+version = "0.1.0"
+
+[dependencies]
+serde = { version = "1.0", features = ["derive"] }
+tokio = { version = "1.0", features = ["full"] }
+
+[dev-dependencies]
+assertions = "0.3"`
+      );
+
+      const result = await analyzer.analyze(testDir, true);
+
+      expect(result.total).toBe(3);
+      expect(result.direct.length).toBe(2);
+      expect(result.dev.length).toBe(1);
+    });
+
+  it('should parse pyproject.toml dependencies', async () => {
+      await fs.promises.writeFile(
+        path.join(testDir, 'pyproject.toml'),
+        `[project]
+name = "myproject"
+version = "0.1.0"
+dependencies = [
+    "requests>=2.28.0",
+    "flask>=2.0.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0.0",
+    "black>=23.0.0",
+]`
+      );
+
+      const result = await analyzer.analyze(testDir, false);
+
+      expect(result.total).toBe(2);
+      expect(result.direct.length).toBe(2);
+    });
+
+    it('should parse composer.json dependencies', async () => {
+      await fs.promises.writeFile(
+        path.join(testDir, 'composer.json'),
+        JSON.stringify({
+          require: {
+            php: '^8.0',
+            'laravel/framework': '^10.0',
+          },
+          'require-dev': {
+            'phpunit/phpunit': '^10.0',
+          },
+        })
+      );
+
+      const result = await analyzer.analyze(testDir, true);
+
+      expect(result.total).toBe(3);
+      expect(result.dev.length).toBe(1);
+    });
+
+  it('should parse Gemfile dependencies', async () => {
+      await fs.promises.writeFile(
+        path.join(testDir, 'Gemfile'),
+        `source 'https://rubygems.org'
+
+gem 'rails', '~> 7.0.0'
+gem 'nokogiri', '>= 1.13'
+
+group :development, :test do
+  gem 'rspec-rails', '~> 6.0'
+end`
+      );
+
+      const result = await analyzer.analyze(testDir, true);
+
+      expect(result.total).toBe(3);
+      expect(result.dev.length).toBe(1);
+    });
+
+    it('should handle empty project gracefully', async () => {
+      const result = await analyzer.analyze(testDir, false);
+
+      expect(result.total).toBe(0);
+      expect(result.direct).toHaveLength(0);
+      expect(result.dev).toHaveLength(0);
+    });
+
+    it('should handle invalid JSON gracefully', async () => {
+      await fs.promises.writeFile(
+        path.join(testDir, 'package.json'),
+        'invalid json {'
+      );
+
+      const result = await analyzer.analyze(testDir, false);
+
+      expect(result.total).toBe(0);
+    });
+
+    it('should mark local dependencies correctly', async () => {
+      const packageJson = {
+        dependencies: {
+          './local-module': '*',
+          '@local/package': '*',
+          express: '^4.18.0',
+        },
+      };
+      await fs.promises.writeFile(
+        path.join(testDir, 'package.json'),
+        JSON.stringify(packageJson)
+      );
+
+      const result = await analyzer.analyze(testDir, false);
+
+      expect(result.direct.find(d => d.name === './local-module')?.isLocal).toBe(true);
+      expect(result.direct.find(d => d.name === '@local/package')?.isLocal).toBe(true);
+      expect(result.direct.find(d => d.name === 'express')?.isLocal).toBe(false);
+    });
+  });
+});