实现缓存策略的部分功能

internal/errors/error_test.go

@@ -0,0 +1,22 @@
+package errors
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestNew(t *testing.T) {
+	t.Log(New("hello"))
+	t.Log(Wrap(errors.New("hello")))
+	t.Log(testError1())
+	t.Log(Wrap(testError1()))
+	t.Log(Wrap(testError2()))
+}
+
+func testError1() error {
+	return New("test error1")
+}
+
+func testError2() error {
+	return Wrap(testError1())
+}