1 files changed, 25 insertions, 0 deletions
diff --git a/src/services/graphql/fetchers/posts/fetch-last-post-cursor.test.ts b/src/services/graphql/fetchers/posts/fetch-last-post-cursor.test.ts
new file mode 100644
index 0000000..4fe2f50
--- /dev/null
+++ b/src/services/graphql/fetchers/posts/fetch-last-post-cursor.test.ts
@@ -0,0 +1,25 @@
+import { afterEach, describe, expect, it } from '@jest/globals';
+import { fetchLastPostCursor } from './fetch-last-post-cursor';
+
+describe('fetch-last-post-cursor', () => {
+  afterEach(() => {
+    window.history.replaceState({}, '', '/');
+  });
+
+  it('returns the cursor of the last WordPress post using GraphQL', async () => {
+    const result = await fetchLastPostCursor(2);
+
+    expect.assertions(1);
+
+    expect(result).toBe('cursor2');
+  });
+
+  it('rejects with an error when no posts are found', async () => {
+    window.history.replaceState({}, '', '/?error=true');
+    expect.assertions(1);
+
+    await expect(async () => fetchLastPostCursor(1)).rejects.toEqual(
+      new Error('Unable to find the cursor of the last post.')
+    );
+  });
+});