v0.19.1 dep update, test helper package

internal/config/test_helpers_test.go

@@ -0,0 +1,15 @@
+package config
+
+import (
+	"testing"
+
+	"logwisp/internal/testutil"
+)
+
+func isolateConfig(t *testing.T) {
+	t.Helper()
+	testutil.ClearEnvPrefix(t, "LOGWISP_")
+	dir := t.TempDir()
+	t.Setenv("HOME", dir)
+	t.Chdir(dir)
+}