[test] Call cmd.Start and cmd.Wait separately to avoid triggering race detector (#616)

* [test] Call cmd.Start and cmd.Wait separately to avoid triggering race detector

* [test] Enable race detector for tests

1 files changed, 5 insertions, 1 deletions

diff --git a/node_exporter_test.go b/node_exporter_test.go
index 3b57949..b5c77af 100644
--- a/node_exporter_test.go
+++ b/node_exporter_test.go
@@ -107,9 +107,13 @@ func queryExporter(address string) error {
 }
 
 func runCommandAndTests(cmd *exec.Cmd, fn func(pid int) error) error {
+        if err := cmd.Start(); err != nil {
+                return fmt.Errorf("failed to start command: %s", err)
+        }
+
         errc := make(chan error)
         go func() {
-                if err := cmd.Run(); err != nil {
+                if err := cmd.Wait(); err != nil {
                         errc <- fmt.Errorf("execution of command failed: %s", err)
                 } else {
                         errc <- nil