feat: pointer time to int64 (#1)

Co-authored-by: liutong.eric <liutong.eric@bytedance.com>

p2p.go

@@ -8,3 +8,10 @@ func PointerInt64ToTime(i *int64) *time.Time {
 	}
 	return Time(time.Unix(*i, 0))
 }
+
+func PointerTimeToInt64(i *time.Time) *int64 {
+	if i == nil {
+		return nil
+	}
+	return Int64(i.Unix())
+}

p2p_test.go

@@ -1,7 +1,9 @@
 package ptr
 
 import (
+	"reflect"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 )
@@ -36,3 +38,29 @@ func TestPointerInt64ToTime(t *testing.T) {
 		})
 	}
 }
+
+func TestPointerTimeToInt64(t *testing.T) {
+	tests := []struct {
+		name string
+		args *time.Time
+		want *int64
+	}{
+		{
+			name: "nil time to nil int64",
+			args: nil,
+			want: nil,
+		},
+		{
+			name: "pointer time to pointer int64",
+			args: Time(time.Unix(24580, 0)),
+			want: Int64(24580),
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := PointerTimeToInt64(tt.args); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("PointerTimeToInt64() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}