use boxlayout from lazycore

vendor/github.com/samber/lo/test.go

@@ -0,0 +1,32 @@
+package lo
+
+import (
+	"os"
+	"testing"
+	"time"
+)
+
+// https://github.com/stretchr/testify/issues/1101
+func testWithTimeout(t *testing.T, timeout time.Duration) {
+	t.Helper()
+
+	testFinished := make(chan struct{})
+	t.Cleanup(func() { close(testFinished) })
+
+	go func() {
+		select {
+		case <-testFinished:
+		case <-time.After(timeout):
+			t.Errorf("test timed out after %s", timeout)
+			os.Exit(1)
+		}
+	}()
+}
+
+type foo struct {
+	bar string
+}
+
+func (f foo) Clone() foo {
+	return foo{f.bar}
+}