syz-verifier: remove temp test dirs

The tests currently don't clean up old dir.
Clean up old test dirs.

There is a nice t.TempDir:
https://pkg.go.dev/testing#T.TempDir
but it's only Go 1.15.

Cleanup was added in 1.14:
https://pkg.go.dev/testing#T.Cleanup
And we have exactly 1.14 in tools/old-env/Dockerfile.

1 files changed, 4 insertions, 0 deletions

diff --git a/syz-verifier/test_utils.go b/syz-verifier/test_utils.go
index 708e25731..517d17232 100644
--- a/syz-verifier/test_utils.go
+++ b/syz-verifier/test_utils.go
@@ -6,6 +6,7 @@ package main
 import (
 	"io/ioutil"
 	"math/rand"
+	"os"
 	"testing"
 	"time"
 
@@ -52,6 +53,9 @@ func makeTestResultDirectory(t *testing.T) string {
 	if err != nil {
 		t.Fatalf("failed to create results directory: %v", err)
 	}
+	t.Cleanup(func() {
+		os.RemoveAll(dir)
+	})
 	return osutil.Abs(dir)
 }