test(services): add tests for comments list fetcher

2 files changed, 27 insertions, 1 deletions

diff --git a/src/services/graphql/fetchers/comments/fetch-comments.test.ts b/src/services/graphql/fetchers/comments/fetch-comments.test.ts
new file mode 100644
index 0000000..15cfb6d
--- /dev/null
+++ b/src/services/graphql/fetchers/comments/fetch-comments.test.ts
@@ -0,0 +1,26 @@
+import { afterEach, describe, expect, it } from '@jest/globals';
+import { wpCommentsFixture } from '../../../../../tests/fixtures';
+import { fetchCommentsList } from './fetch-comments';
+
+describe('fetch-comments', () => {
+  afterEach(() => {
+    window.history.replaceState({}, '', '/');
+  });
+
+  it('returns the WordPress comments using GraphQL', async () => {
+    const result = await fetchCommentsList({});
+
+    expect.assertions(1);
+
+    expect(result.length).toBe(wpCommentsFixture.length);
+  });
+
+  it('rejects with an error when no comments are found', async () => {
+    window.history.replaceState({}, '', '/?error=true');
+    expect.assertions(1);
+
+    await expect(async () =>
+      fetchCommentsList({ where: { contentName: '/inexistent-slug' } })
+    ).rejects.toEqual(new Error('No comments found.'));
+  });
+});
diff --git a/src/services/graphql/fetchers/comments/fetch-comments.ts b/src/services/graphql/fetchers/comments/fetch-comments.ts
index 85ae6c1..3b52863 100644
--- a/src/services/graphql/fetchers/comments/fetch-comments.ts
+++ b/src/services/graphql/fetchers/comments/fetch-comments.ts
@@ -7,7 +7,7 @@ import type {
 } from '../../../../types';
 import { fetchGraphQL, getGraphQLUrl } from '../../../../utils/helpers';
 
-type CommentsListResponse = {
+export type CommentsListResponse = {
   comments: Nullable<GraphQLNodes<WPComment>>;
 };