diff --git a/test/generators.spec.ts b/test/generators.spec.ts
new file mode 100644
index 0000000..c525a9f
--- /dev/null
+++ b/test/generators.spec.ts
@@ -0,0 +1,149 @@
+import { generateCode, getOutputFileName, getLanguageExtension } from '../src/generators/code-generator.js';
+import { generateCompletion, getCompletionFileName } from '../src/generators/completion-generator.js';
+import { generateManPage, generateReadmeSection } from '../src/generators/docs-generator.js';
+import { testSpec } from './fixtures.js';
+
+describe('Code Generator', () => {
+  describe('Python generation', () => {
+    it('should generate Python code', () => {
+      const result = generateCode(testSpec, 'python');
+
+      expect(result.success).toBe(true);
+      expect(result.code).toBeDefined();
+      expect(result.code).toContain('argparse');
+      expect(result.code).toContain('test-cli');
+    });
+
+    it('should include version info', () => {
+      const result = generateCode(testSpec, 'python');
+
+      expect(result.code).toContain('1.0.0');
+    });
+  });
+
+  describe('Go generation', () => {
+    it('should generate Go code', () => {
+      const result = generateCode(testSpec, 'go');
+
+      expect(result.success).toBe(true);
+      expect(result.code).toBeDefined();
+      expect(result.code).toContain('flag');
+      expect(result.code).toContain('test-cli');
+    });
+  });
+
+  describe('Rust generation', () => {
+    it('should generate Rust code', () => {
+      const result = generateCode(testSpec, 'rust');
+
+      expect(result.success).toBe(true);
+      expect(result.code).toBeDefined();
+      expect(result.code).toContain('test-cli');
+    });
+  });
+
+  describe('Node.js Commander generation', () => {
+    it('should generate Node.js Commander code', () => {
+      const result = generateCode(testSpec, 'node-commander');
+
+      expect(result.success).toBe(true);
+      expect(result.code).toBeDefined();
+      expect(result.code).toContain('commander');
+    });
+  });
+
+  describe('Node.js Yargs generation', () => {
+    it('should generate Node.js Yargs code', () => {
+      const result = generateCode(testSpec, 'node-yargs');
+
+      expect(result.success).toBe(true);
+      expect(result.code).toBeDefined();
+      expect(result.code).toContain('yargs');
+    });
+  });
+
+  describe('file naming', () => {
+    it('should return correct extension for each language', () => {
+      expect(getLanguageExtension('python')).toBe('.py');
+      expect(getLanguageExtension('go')).toBe('.go');
+      expect(getLanguageExtension('rust')).toBe('.rs');
+      expect(getLanguageExtension('node-commander')).toBe('.ts');
+      expect(getLanguageExtension('node-yargs')).toBe('.ts');
+    });
+
+    it('should return correct output file name', () => {
+      expect(getOutputFileName(testSpec, 'python')).toBe('test-cli.py');
+      expect(getOutputFileName(testSpec, 'go')).toBe('test-cli.go');
+      expect(getOutputFileName(testSpec, 'rust')).toBe('test-cli.rs');
+    });
+  });
+});
+
+describe('Completion Generator', () => {
+  describe('bash completion', () => {
+    it('should generate bash completion script', () => {
+      const result = generateCompletion(testSpec, 'bash');
+
+      expect(result.success).toBe(true);
+      expect(result.script).toBeDefined();
+      expect(result.script).toContain('test-cli');
+      expect(result.script).toContain('start');
+      expect(result.script).toContain('stop');
+    });
+  });
+
+  describe('zsh completion', () => {
+    it('should generate zsh completion script', () => {
+      const result = generateCompletion(testSpec, 'zsh');
+
+      expect(result.success).toBe(true);
+      expect(result.script).toBeDefined();
+      expect(result.script).toContain('test-cli');
+    });
+  });
+
+  describe('fish completion', () => {
+    it('should generate fish completion script', () => {
+      const result = generateCompletion(testSpec, 'fish');
+
+      expect(result.success).toBe(true);
+      expect(result.script).toBeDefined();
+      expect(result.script).toContain('test-cli');
+    });
+  });
+
+  describe('file naming', () => {
+    it('should return correct completion file name', () => {
+      expect(getCompletionFileName(testSpec, 'bash')).toBe('_test-cli.bash');
+      expect(getCompletionFileName(testSpec, 'zsh')).toBe('_test-cli.zsh');
+      expect(getCompletionFileName(testSpec, 'fish')).toBe('_test-cli.fish');
+    });
+  });
+});
+
+describe('Docs Generator', () => {
+  describe('man page', () => {
+    it('should generate man page', () => {
+      const result = generateManPage(testSpec);
+
+      expect(result.success).toBe(true);
+      expect(result.content).toBeDefined();
+      expect(result.content).toContain('test-cli');
+      expect(result.content).toContain('1');
+      expect(result.content).toContain('start');
+      expect(result.content).toContain('stop');
+    });
+  });
+
+  describe('README section', () => {
+    it('should generate README section', () => {
+      const result = generateReadmeSection(testSpec);
+
+      expect(result.success).toBe(true);
+      expect(result.content).toBeDefined();
+      expect(result.content).toContain('test-cli');
+      expect(result.content).toContain('## test-cli');
+      expect(result.content).toContain('### Commands');
+    });
+  });
+});