test(services): add tests for posts fetchers

1 files changed, 23 insertions, 0 deletions

diff --git a/src/services/graphql/fetchers/posts/fetch-post.test.ts b/src/services/graphql/fetchers/posts/fetch-post.test.ts
new file mode 100644
index 0000000..e19e4de
--- /dev/null
+++ b/src/services/graphql/fetchers/posts/fetch-post.test.ts
@@ -0,0 +1,23 @@
+import { describe, expect, it } from '@jest/globals';
+import { wpPostsFixture } from '../../../../../tests/fixtures';
+import { fetchPost } from './fetch-post';
+
+describe('fetch-post', () => {
+  it('returns a post by slug', async () => {
+    const result = await fetchPost(wpPostsFixture[2].slug);
+
+    expect.assertions(1);
+
+    expect(result).toStrictEqual(wpPostsFixture[2]);
+  });
+
+  it('rejects with an error when the slug does not exist', async () => {
+    const slug = '/inexistent-slug';
+
+    expect.assertions(1);
+
+    await expect(async () => fetchPost(slug)).rejects.toEqual(
+      new Error(`No post found for the following slug ${slug}.`)
+    );
+  });
+});