fix: adjust cookie expiration calculation

2 files changed, 7 insertions, 5 deletions

diff --git a/pkg/web/cookie/option.go b/pkg/web/cookie/option.go
index 3f2cc93..58a2e93 100644
--- a/pkg/web/cookie/option.go
+++ b/pkg/web/cookie/option.go
@@ -50,7 +50,8 @@ func WithExpiration(expires time.Time) x.Option[*http.Cookie] {
 		if expires.Before(time.Now()) {
 			c.MaxAge = -1
 		} else {
-			c.MaxAge = int(time.Until(expires).Seconds())
+			duration := time.Until(expires).Round(time.Second)
+			c.MaxAge = int(duration.Seconds())
 		}
 	})
 }
diff --git a/pkg/web/cookie/test_option.go b/pkg/web/cookie/option_test.go
index caf1497..97913ba 100644
--- a/pkg/web/cookie/test_option.go
+++ b/pkg/web/cookie/option_test.go
@@ -35,16 +35,17 @@ func TestOption(t *testing.T) {
 
 	t.Run("WithExpiration", func(t *testing.T) {
 		now := time.Now()
-		expires := now.Add(1 * time.Second)
 
 		t.Run("with future time", func(t *testing.T) {
-			cookie := New("x", "v", WithExpiration(now.Add(1*time.Second)))
+			expires := now.Add(1 * time.Second)
+			cookie := New("x", "v", WithExpiration(expires))
 			assert.Equal(t, expires, cookie.Expires)
-			assert.Equal(t, time.Until(expires).Seconds(), cookie.MaxAge)
+			assert.Equal(t, 1, cookie.MaxAge)
 		})
 
 		t.Run("with past time", func(t *testing.T) {
-			cookie := New("x", "v", WithExpiration(now.Add(-1*time.Second)))
+			expires := now.Add(-1 * time.Second)
+			cookie := New("x", "v", WithExpiration(expires))
 			assert.Equal(t, expires, cookie.Expires)
 			assert.Equal(t, -1, cookie.MaxAge)
 		})