Add error test
diff --git a/build.yaml b/build.yaml
index 33cd692..7d33738 100644
--- a/build.yaml
+++ b/build.yaml
@@ -1686,6 +1686,17 @@
   - gpr
   exclude_iomgrs:
   - uv
+- name: error_test
+  cpu_cost: 30
+  build: test
+  language: c
+  src:
+  - test/core/iomgr/error_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: ev_epoll_linux_test
   build: test
   language: c