diff --git a/client/config/cert-and-project-map.ts b/client/config/cert-and-project-map.ts
index 85a5065937e..083275afe08 100644
--- a/client/config/cert-and-project-map.ts
+++ b/client/config/cert-and-project-map.ts
@@ -793,7 +793,7 @@ const allStandardCerts = [
     ]
   },
   {
-    id: '647e3159823e0ef219c7359b',
+    id: '647f7da207d29547b3bee1ba',
     title: 'Foundational C# with Microsoft',
     certSlug: Certification.FoundationalCSharp,
     projects: [
@@ -952,12 +952,12 @@ const allStandardCerts = [
     ]
   },
   {
-    id: '682c3153086dd7cabe7f48bc',
+    id: '68f1268149f045a650d4229e',
     title: 'A1 Professional Chinese',
     certSlug: Certification.A1Chinese,
     projects: [
       {
-        id: '682c2753317b88f1ecdad894',
+        id: '688f1daf0133dbe2a36b140b',
         title: 'Dialogue 1: PLACEHOLDER',
         link: `${a1ChineseBase}/learn-essential-courtesies-at-the-office
 /text-1`,
@@ -1008,6 +1008,12 @@ const upcomingCerts = allStandardCerts.filter((cert): cert is UpcomingCert =>
 const liveCerts = showUpcomingChanges
   ? [...currentCerts, ...legacyCerts, fullstackCert, ...upcomingCerts]
   : [...currentCerts, ...legacyCerts, fullstackCert];
+const allCerts = [
+  ...currentCerts,
+  ...legacyCerts,
+  fullstackCert,
+  ...upcomingCerts
+];
 
 type CertsToProjects = Record<
   (typeof allStandardCerts)[number]['certSlug'],
@@ -1025,4 +1031,4 @@ export type CertTitle =
   | (typeof liveCerts)[number]['title']
   | 'Legacy Full Stack';
 
-export { liveCerts, certsToProjects };
+export { liveCerts, certsToProjects, allCerts };
diff --git a/curriculum/build-certification.test.js b/curriculum/build-certification.test.js
new file mode 100644
index 00000000000..aea6b9a7efa
--- /dev/null
+++ b/curriculum/build-certification.test.js
@@ -0,0 +1,94 @@
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import { describe, test, expect } from 'vitest';
+
+import { allCerts } from '../client/config/cert-and-project-map.js';
+import { buildCertification } from './build-certification.js';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+describe('build-certification', () => {
+  const certificationsDir = path.join(
+    __dirname,
+    'challenges/english/certifications'
+  );
+  const yamlFiles = fs
+    .readdirSync(certificationsDir)
+    .filter(file => file.endsWith('.yml'));
+
+  yamlFiles.forEach(file => {
+    describe(`${file} file`, () => {
+      const filePath = path.join(certificationsDir, file);
+      const result = buildCertification(filePath);
+
+      test('should have the correct properties', () => {
+        expect(result).toHaveProperty('challenges');
+        expect(Array.isArray(result.challenges)).toBe(true);
+        expect(result.challenges).toHaveLength(1);
+
+        const certData = result.challenges[0];
+        expect(certData).toHaveProperty('id');
+        expect(certData).toHaveProperty('title');
+        expect(certData).toHaveProperty('certification');
+        expect(certData).toHaveProperty('challengeType');
+        expect(certData).toHaveProperty('tests');
+        expect(Array.isArray(certData.tests)).toBe(true);
+      });
+
+      test('Should have matching items in cert-and-project-map', () => {
+        const certData = result.challenges[0];
+        const certTests = certData.tests;
+
+        const matchingCert = allCerts.find(cert => cert.id === certData.id);
+
+        expect(
+          matchingCert,
+          `Cert ID ${certData.id} not found in allCerts.`
+        ).toBeDefined();
+        expect(
+          matchingCert,
+          `Matching cert has no 'projects' property`
+        ).toHaveProperty('projects');
+
+        // skip legacy-full-stack as it has no projects
+        if (file !== 'legacy-full-stack.yml') {
+          expect(
+            Array.isArray(matchingCert.projects),
+            `Matching cert 'projects' is not an array`
+          ).toBe(true);
+
+          const certProjects = matchingCert.projects;
+
+          expect(
+            certProjects.length,
+            `Project count mismatch: allCerts has ${certProjects.length} projects, YAML has ${certTests.length} tests`
+          ).toBe(certTests.length);
+
+          certTests.forEach((test, i) => {
+            expect(
+              test,
+              `Test at index ${i} in missing id property`
+            ).toHaveProperty('id');
+            expect(
+              test,
+              `Test at index ${i} missing title property`
+            ).toHaveProperty('title');
+
+            const matchingProject = certProjects[i];
+
+            expect(
+              matchingProject,
+              `No project found at index ${i} for test ${test.id}`
+            ).toBeDefined();
+            expect(
+              matchingProject.id,
+              `Project ID mismatch at index ${i}: allCerts has "${matchingProject.id}", YAML has "${test.id}"`
+            ).toBe(test.id);
+          });
+        }
+      });
+    });
+  });
+});
diff --git a/curriculum/challenges/english/certifications/a1-professional-chinese.yml b/curriculum/challenges/english/certifications/a1-professional-chinese.yml
index c65a94c73bb..1c9a35159a6 100644
--- a/curriculum/challenges/english/certifications/a1-professional-chinese.yml
+++ b/curriculum/challenges/english/certifications/a1-professional-chinese.yml
@@ -1,5 +1,5 @@
 ---
-id: 688f1daf0133dbe2a36b140b
+id: 68f1268149f045a650d4229e
 title: A1 Professional Chinese Certification
 certification: a1-professional-chinese-certification
 challengeType: 7
diff --git a/curriculum/challenges/english/certifications/responsive-web-design.yml b/curriculum/challenges/english/certifications/responsive-web-design.yml
index 116dd1396c3..a0eb0de9884 100644
--- a/curriculum/challenges/english/certifications/responsive-web-design.yml
+++ b/curriculum/challenges/english/certifications/responsive-web-design.yml
@@ -3,13 +3,13 @@ title: Responsive Web Design Certification
 certification: responsive-web-design
 challengeType: 7
 tests:
-  - id: bd7158d8c442eddfaeb5bd18
-    title: Build a Tribute Page
   - id: 587d78af367417b2b2512b03
     title: Build a Survey Form
-  - id: 587d78af367417b2b2512b04
-    title: Build a Product Landing Page
+  - id: bd7158d8c442eddfaeb5bd18
+    title: Build a Tribute Page
   - id: 587d78b0367417b2b2512b05
     title: Build a Technical Documentation Page
+  - id: 587d78af367417b2b2512b04
+    title: Build a Product Landing Page
   - id: bd7158d8c242eddfaeb5bd13
     title: Build a Personal Portfolio Webpage