fix(services,types): make queries and types coherent for Topic

* some nodes was missing in topicQuery
* a node was mispelled in topicsListQuery
* add tests for all topics fetchers

1 files changed, 23 insertions, 0 deletions

diff --git a/src/services/graphql/fetchers/topics/fetch-topic.test.ts b/src/services/graphql/fetchers/topics/fetch-topic.test.ts
new file mode 100644
index 0000000..5fae313
--- /dev/null
+++ b/src/services/graphql/fetchers/topics/fetch-topic.test.ts
@@ -0,0 +1,23 @@
+import { describe, expect, it } from '@jest/globals';
+import { wpTopicsFixture } from '../../../../../tests/fixtures';
+import { fetchTopic } from './fetch-topic';
+
+describe('fetch-topic', () => {
+  it('returns a topic by slug', async () => {
+    const result = await fetchTopic(wpTopicsFixture[2].slug);
+
+    expect.assertions(1);
+
+    expect(result).toStrictEqual(wpTopicsFixture[2]);
+  });
+
+  it('rejects with an error when the slug does not exist', async () => {
+    const slug = '/inexistent-slug';
+
+    expect.assertions(1);
+
+    await expect(async () => fetchTopic(slug)).rejects.toEqual(
+      new Error(`No topic found for the following slug ${slug}.`)
+    );
+  });
+});