refactor(stats card fetcher): improve could not fetch total commits error message (#3255)

tests/api.test.js

@@ -304,4 +304,22 @@ describe("Test /api/", () => {
       renderError("Something went wrong", "Language not found"),
     );
   });
+
+  it("should render error card when include_all_commits true and upstream API fails", async () => {
+    mock
+      .onGet("https://api.github.com/search/commits?q=author:anuraghazra")
+      .reply(200, { error: "Some test error message" });
+
+    const { req, res } = faker(
+      { username: "anuraghazra", include_all_commits: true },
+      data_stats,
+    );
+
+    await api(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(
+      renderError("Could not fetch total commits.", "Please try again later"),
+    );
+  });
 });