test(services): add tests for comments list fetcher

1 files changed, 39 insertions, 0 deletions

diff --git a/tests/msw/handlers/comments/comments-list.handler.ts b/tests/msw/handlers/comments/comments-list.handler.ts
new file mode 100644
index 0000000..e815a0e
--- /dev/null
+++ b/tests/msw/handlers/comments/comments-list.handler.ts
@@ -0,0 +1,39 @@
+import { type ExecutionResult, graphql as executeGraphql } from 'graphql';
+import { HttpResponse, graphql } from 'msw';
+import type {
+  FetchCommentsListInput,
+  CommentsListResponse,
+} from '../../../../src/services/graphql';
+import { wpCommentsFixture } from '../../../fixtures';
+import { schema } from '../../schema';
+
+export const commentsListHandler = graphql.query<
+  CommentsListResponse,
+  FetchCommentsListInput
+>('CommentsList', async ({ query, variables }) => {
+  const pageParams = new URLSearchParams(window.location.search);
+  const isError = pageParams.get('error') === 'true';
+
+  if (isError) return HttpResponse.json({ data: { comments: null } });
+
+  const { data, errors } = (await executeGraphql({
+    schema,
+    source: query,
+    variableValues: variables,
+    rootValue: {
+      comments({ first, where }: typeof variables) {
+        const { status: commentStatus } = where ?? {};
+        const filteredComments = commentStatus
+          ? wpCommentsFixture.filter(
+              (comment) => comment.status === commentStatus
+            )
+          : wpCommentsFixture;
+        const comments = filteredComments.slice(0, first);
+
+        return { nodes: comments };
+      },
+    },
+  })) as ExecutionResult<CommentsListResponse>;
+
+  return HttpResponse.json({ data, errors });
+});