1 files changed, 66 insertions, 0 deletions
diff --git a/src/components/json-ld.test.tsx b/src/components/json-ld.test.tsx
new file mode 100644
index 0000000..6a81414
--- /dev/null
+++ b/src/components/json-ld.test.tsx
@@ -0,0 +1,66 @@
+import { render } from '@testing-library/react';
+import { describe, expect, test, vi } from 'vitest';
+
+vi.mock('@/app/(main)/layout.config', () => ({
+  title: 'Blog',
+  owner: 'Test Owner',
+}));
+
+vi.mock('@/lib/constants', () => ({
+  baseUrl: new URL('http://localhost:3000'),
+}));
+
+import { PostJsonLd, TagJsonLd } from './json-ld';
+
+describe('json-ld components', () => {
+  test('renders post json-ld with blog posting and breadcrumb graph', () => {
+    const { container } = render(
+      <PostJsonLd
+        post={{
+          id: 1,
+          title: 'Testing Post',
+          slug: 'testing-post',
+          url: '/posts/testing-post',
+          description: 'A post for tests',
+          content: null,
+          image: '/cover.png',
+          author: 'Alice',
+          tags: ['testing'],
+          date: new Date('2025-01-01T00:00:00.000Z'),
+          createdAt: new Date('2025-01-01T00:00:00.000Z'),
+          updatedAt: new Date('2025-01-02T00:00:00.000Z'),
+        }}
+      />,
+    );
+
+    const script = container.querySelector('script[type="application/ld+json"]');
+    expect(script).toBeInTheDocument();
+
+    const payload = JSON.parse(script?.innerHTML ?? '{}');
+    expect(payload['@context']).toBe('https://schema.org');
+    expect(payload['@graph']).toHaveLength(2);
+    expect(payload['@graph'][0]['@type']).toBe('BlogPosting');
+    expect(payload['@graph'][0].mainEntityOfPage['@id']).toBe(
+      'http://localhost:3000/posts/testing-post',
+    );
+  });
+
+  test('returns null when post is not provided', () => {
+    const { container } = render(<PostJsonLd post={null} />);
+    expect(container.firstChild).toBeNull();
+  });
+
+  test('renders tag json-ld with tag-specific breadcrumb item', () => {
+    const { container } = render(<TagJsonLd tag='nextjs' />);
+
+    const script = container.querySelector('script[type="application/ld+json"]');
+    expect(script).toBeInTheDocument();
+
+    const payload = JSON.parse(script?.innerHTML ?? '{}');
+    expect(payload['@graph']).toHaveLength(1);
+    expect(payload['@graph'][0]['@type']).toBe('BreadcrumbList');
+    expect(payload['@graph'][0].itemListElement[2].item).toBe(
+      'http://localhost:3000/tags/nextjs',
+    );
+  });
+});