simplify renders username and body fixture for speed

Make a simple stream with one comment so that the test
renderer can initiate faster and avoid stalling out on
GitHub CI.

Based on my experiments, this makes the test pass and also
speeds it up by a factor of more than 10x.

src/core/client/stream/test/comments/components/CommentContainer.spec.tsx

@@ -9,6 +9,7 @@ import {
 import {
   commenters,
   settings,
+  singleCommentStory,
   stories,
   storyWithDeletedComments,
   storyWithReplies,
@@ -51,7 +52,14 @@ async function createTestRenderer(
 afterEach(jest.clearAllMocks);
 
 it("renders username and body", async () => {
-  const { container } = await createTestRenderer();
+  const { container } = await createTestRenderer({
+    resolvers: {
+      Query: {
+        story: () => singleCommentStory,
+        stream: () => singleCommentStory,
+      },
+    },
+  });
 
   const firstComment = stories[0].comments.edges[0].node;
   const commentElement = await within(container).findByTestId(

src/core/client/stream/test/fixtures.ts

@@ -797,6 +797,19 @@ export const commentsFromStaff = denormalizeComments(
   )
 );
 
+export const singleCommentStory = denormalizeStory(
+  createFixture<GQLStory>(
+    {
+      id: "story-1",
+      url: "http://localhost/stories/story-1",
+      comments: {
+        edges: [{ node: comments[0], cursor: comments[0].createdAt }],
+      },
+    },
+    baseStory
+  )
+);
+
 export const stories = denormalizeStories(
   createFixtures<GQLStory>(
     [