review fix for #56

- add grants for guest user
- update comments

tests/tnt/Makefile

@@ -20,7 +20,7 @@ clean:
 
 # prepare vshard-storages, that contains ${NREPLICASETS} replicasets.
 # every replicaset has one master and one follower instance.
-# every replicaset runs in background mode, no logs are stored (/dev/null)
+# every replicaset runs in background mode
 cluster-up:
 	@echo "${GREEN}STAGE: CLUSTER UP${NC}"
 	mkdir -p tmp

tests/tnt/concurrent_topology_test.go

@@ -116,10 +116,6 @@ func TestConncurrentTopologyChange(t *testing.T) {
 		return
 	}
 
-	// suppress the below linter warning:
-	// unused-parameter: parameter 't' seems to be unused, consider removing or renaming it as _ (revive)
-	_ = t
-
 	// Don't run this parallel with other tests, because this test is heavy and used to detect data races.
 	// Therefore this test may impact other ones.
 	// t.Parallel()

tests/tnt/storage.lua

@@ -85,6 +85,8 @@ box.once("testapp:schema:1", function()
     box.schema.role.grant('public', 'execute', 'function', 'raise_luajit_error')
     box.schema.func.create('raise_client_error')
     box.schema.role.grant('public', 'execute', 'function', 'raise_client_error')
+
+    box.schema.user.grant('guest', 'super')
 end)