From a06694f9152ed8fca1415d1a52a2340a55977ee7 Mon Sep 17 00:00:00 2001
From: Schalli <kschaller@ctl.de>
Date: Wed, 1 Jul 2026 23:18:08 +0200
Subject: [PATCH] test(09-01): add failing spec for cert-manager seed + helpers
 (RED)

- Test: seedCertManagerModule calls seedModule with slug='cert-manager',
  category='security-tools', isSystem=true
- Test: detectFormat returns pem/der/pfx/p7b based on extension + content sniff
- Test: getFingerprint returns uppercase colon-separated hex (sha1 + sha256)
- Test: parsePemChain returns array of length 2 for two concatenated PEMs
---
 .../cert-manager/cert-manager.service.spec.ts | 130 ++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 apps/api/src/cert-manager/cert-manager.service.spec.ts

diff --git a/apps/api/src/cert-manager/cert-manager.service.spec.ts b/apps/api/src/cert-manager/cert-manager.service.spec.ts
new file mode 100644
index 0000000..eef1a67
--- /dev/null
+++ b/apps/api/src/cert-manager/cert-manager.service.spec.ts
@@ -0,0 +1,130 @@
+import * as forge from 'node-forge';
+import { beforeAll, describe, expect, it, vi } from 'vitest';
+import { seedCertManagerModule } from './cert-manager.seed';
+import { CertManagerService } from './cert-manager.service';
+
+// ---------------------------------------------------------------------------
+// Test helpers
+// ---------------------------------------------------------------------------
+
+/** Generate a self-signed X.509 cert via node-forge (RSA 1024 — fast for tests) */
+function generateSelfSignedCert(): forge.pki.Certificate {
+  const keys = forge.pki.rsa.generateKeyPair(1024);
+  const cert = forge.pki.createCertificate();
+  cert.publicKey = keys.publicKey;
+  cert.serialNumber = '01';
+  cert.validity.notBefore = new Date();
+  cert.validity.notAfter = new Date();
+  cert.validity.notAfter.setFullYear(cert.validity.notBefore.getFullYear() + 1);
+
+  const attrs = [{ name: 'commonName', value: 'test.example.com' }];
+  cert.setSubject(attrs);
+  cert.setIssuer(attrs);
+  cert.sign(keys.privateKey, forge.md.sha256.create());
+  return cert;
+}
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+describe('seedCertManagerModule', () => {
+  it('calls moduleRegistryService.seedModule once with cert-manager slug', async () => {
+    const mockSeedModule = vi.fn().mockResolvedValue(undefined);
+    const mockModuleRegistryService = { seedModule: mockSeedModule } as any;
+
+    await seedCertManagerModule(mockModuleRegistryService);
+
+    expect(mockSeedModule).toHaveBeenCalledTimes(1);
+    const arg = mockSeedModule.mock.calls[0][0];
+    expect(arg.slug).toBe('cert-manager');
+    expect(arg.category).toBe('security-tools');
+    expect(arg.isSystem).toBe(true);
+  });
+});
+
+describe('CertManagerService helpers', () => {
+  let service: CertManagerService;
+  let testCert: forge.pki.Certificate;
+
+  beforeAll(() => {
+    service = new CertManagerService();
+    testCert = generateSelfSignedCert();
+  });
+
+  // -------------------------------------------------------------------------
+  // detectFormat
+  // -------------------------------------------------------------------------
+
+  describe('detectFormat', () => {
+    it('returns "pfx" for .pfx extension', () => {
+      const buf = Buffer.from([0x30, 0x82]); // arbitrary binary
+      expect(service.detectFormat('cert.pfx', buf)).toBe('pfx');
+    });
+
+    it('returns "p7b" for .p7b extension', () => {
+      const buf = Buffer.from([0x30, 0x82]);
+      expect(service.detectFormat('cert.p7b', buf)).toBe('p7b');
+    });
+
+    it('returns "der" for .der extension', () => {
+      const buf = Buffer.from([0x30, 0x82]);
+      expect(service.detectFormat('cert.der', buf)).toBe('der');
+    });
+
+    it('returns "pem" for .pem extension', () => {
+      const buf = Buffer.from('-----BEGIN CERTIFICATE-----\nfake\n-----END CERTIFICATE-----');
+      expect(service.detectFormat('cert.pem', buf)).toBe('pem');
+    });
+
+    it('returns "pem" for .cer extension with PEM content', () => {
+      const buf = Buffer.from('-----BEGIN CERTIFICATE-----\nfake\n-----END CERTIFICATE-----');
+      expect(service.detectFormat('cert.cer', buf)).toBe('pem');
+    });
+
+    it('returns "der" for .cer extension with binary (non-PEM) content', () => {
+      const buf = Buffer.from([0x30, 0x82, 0x01, 0x00]);
+      expect(service.detectFormat('cert.cer', buf)).toBe('der');
+    });
+  });
+
+  // -------------------------------------------------------------------------
+  // getFingerprint
+  // -------------------------------------------------------------------------
+
+  describe('getFingerprint', () => {
+    it('returns uppercase colon-separated hex for sha256', () => {
+      const fp = service.getFingerprint(testCert, 'sha256');
+      // e.g. "AA:BB:CC:..."
+      expect(fp).toMatch(/^[0-9A-F]{2}(:[0-9A-F]{2})+$/);
+    });
+
+    it('returns uppercase colon-separated hex for sha1', () => {
+      const fp = service.getFingerprint(testCert, 'sha1');
+      expect(fp).toMatch(/^[0-9A-F]{2}(:[0-9A-F]{2})+$/);
+    });
+  });
+
+  // -------------------------------------------------------------------------
+  // parsePemChain
+  // -------------------------------------------------------------------------
+
+  describe('parsePemChain', () => {
+    it('returns array of length 2 for two concatenated cert PEMs', () => {
+      const cert1 = generateSelfSignedCert();
+      const cert2 = generateSelfSignedCert();
+      const pem1 = forge.pki.certificateToPem(cert1);
+      const pem2 = forge.pki.certificateToPem(cert2);
+      const chain = pem1 + '\n' + pem2;
+
+      const parsed = service.parsePemChain(chain);
+      expect(parsed).toHaveLength(2);
+    });
+
+    it('returns array of length 1 for a single PEM', () => {
+      const pem = forge.pki.certificateToPem(testCert);
+      const parsed = service.parsePemChain(pem);
+      expect(parsed).toHaveLength(1);
+    });
+  });
+});