From a930511054925215931dc5b5f24a032c78168320 Mon Sep 17 00:00:00 2001
From: dudaodong <dudaodong@gmail.com>
Date: Sun, 8 Jan 2023 20:36:32 +0800
Subject: [PATCH] test&doc: add example and update doc for xerror package

---
 xerror/xerror_example_test.go | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 xerror/xerror_example_test.go

diff --git a/xerror/xerror_example_test.go b/xerror/xerror_example_test.go
new file mode 100644
index 0000000..512655f
--- /dev/null
+++ b/xerror/xerror_example_test.go
@@ -0,0 +1,25 @@
+package xerror
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+)
+
+func ExampleUnwrap() {
+	result1 := Unwrap(strconv.Atoi("42"))
+	fmt.Println(result1)
+
+	_, err := strconv.Atoi("4o2")
+	defer func() {
+		v := recover()
+		result2 := reflect.DeepEqual(err.Error(), v.(*strconv.NumError).Error())
+		fmt.Println(result2)
+	}()
+
+	Unwrap(strconv.Atoi("4o2"))
+
+	// Output:
+	// 42
+	// true
+}