diff --git a/io/fileutils_test.go b/io/fileutils_test.go
new file mode 100644
index 0000000..f727854
--- /dev/null
+++ b/io/fileutils_test.go
@@ -0,0 +1,29 @@
+package io
+
+import (
+	"errors"
+	"github.com/stretchr/testify/assert"
+	"os"
+	"path"
+	"strings"
+	"testing"
+)
+
+func TestClose(t *testing.T) {
+	var err error
+	t.TempDir()
+	f, err := os.Create(path.Join(t.TempDir(), "test"))
+	assert.NoError(t, err)
+
+	Close(f, &err)
+	assert.NoError(t, err)
+
+	// Try closing the same file again and expect error
+	Close(f, &err)
+	assert.Error(t, err)
+
+	// Check that both errors are aggregated
+	err = errors.New("original error")
+	Close(f, &err)
+	assert.Len(t, strings.Split(err.Error(), "\n"), 2)
+}