feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

backend/pkg/errorx/internal/stack_test.go

@@ -0,0 +1,73 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package internal
+
+import (
+	"errors"
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWithStack(t *testing.T) {
+	err := withStackTraceIfNotExists(errors.New("test error"))
+	output1 := fmt.Sprintf("%+v", err)
+	assert.Contains(t, output1, "stack_test.go")
+	assert.Contains(t, output1, "withStackTraceIfNotExists")
+	t.Log(output1)
+}
+
+func TestPrintStack(t *testing.T) {
+	t.Run("New with stack", func(t *testing.T) {
+		err := NewByCode(1)
+		output1 := fmt.Sprintf("%v", err)
+		assert.Contains(t, output1, "stack_test.go")
+		assert.Contains(t, output1, "TestPrintStack")
+		t.Log(output1)
+	})
+
+	t.Run("New with stack and wrap with fmt.Errorf", func(t *testing.T) {
+		err := NewByCode(1)
+		err1 := fmt.Errorf("err=%w", err)
+		output1 := fmt.Sprintf("%v", err1)
+		assert.Contains(t, output1, "stack_test.go")
+		assert.Contains(t, output1, "TestPrintStack")
+		t.Log(output1)
+	})
+
+	t.Run("wrapf with stack", func(t *testing.T) {
+		err := errors.New("original error")
+		err1 := Wrapf(err, "wrapped error")
+		output1 := fmt.Sprintf("%v", err1)
+		assert.Contains(t, output1, "stack_test.go")
+		assert.Contains(t, output1, "TestPrintStack")
+		t.Log(output1)
+	})
+
+	t.Run("skip wrap with stack if stack has already exist", func(t *testing.T) {
+		err := NewByCode(1)
+		err1 := fmt.Errorf("err1=%w", err)
+		err2 := withStackTraceIfNotExists(err1)
+		_, ok := err2.(StackTracer)
+		assert.False(t, ok)
+		output1 := fmt.Sprintf("%v", err2)
+		assert.Contains(t, output1, "stack_test.go")
+		assert.Contains(t, output1, "TestPrintStack")
+		t.Log(output1)
+	})
+}