From b1ca39af0d70b55b524d53442ebd727a95a51226 Mon Sep 17 00:00:00 2001
From: Francesco Sardara <francesco@tdgwebservices.com>
Date: Wed, 15 Oct 2025 16:19:31 +0200
Subject: [PATCH] Consider bounds when checking if a period is before another.

---
 src/Period.php             | 2 +-
 src/PeriodRelationTest.php | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/Period.php b/src/Period.php
index 621230a..f87d390 100644
--- a/src/Period.php
+++ b/src/Period.php
@@ -488,7 +488,7 @@ public function durationLessThan(Period|Duration|DateInterval|string $duration):
     public function isBefore(Period|DatePoint|DateTimeInterface|string $timeSlot): bool
     {
         if ($timeSlot instanceof self) {
-            return $this->endDate <= $timeSlot->startDate;
+            return $this->endDate <= $timeSlot->startDate && !$this->meetsOnStart($timeSlot);
         }
 
         $datePoint = self::filterDatePoint($timeSlot);
diff --git a/src/PeriodRelationTest.php b/src/PeriodRelationTest.php
index 97a069d..9a511c8 100644
--- a/src/PeriodRelationTest.php
+++ b/src/PeriodRelationTest.php
@@ -90,11 +90,11 @@ public static function isBeforeProvider(): array
             'exclude start date is before interval' => [
                 'interval' => Period::after('2012-01-01', '1 MONTH', Bounds::ExcludeStartIncludeEnd),
                 'input' => Period::fromMonth(2012, 2),
-                'expected' => true,
+                'expected' => false,
             ],
             'exclude start date is not before interval' => [
                 'interval' => Period::after('2012-01-01', '1 MONTH', Bounds::ExcludeStartIncludeEnd),
-                'input' => Period::fromMonth(2012, 2),
+                'input' => Period::fromMonth(2012, 3),
                 'expected' => true,
             ],
             'exclude start date abuts interval start date' => [
@@ -155,10 +155,10 @@ public static function isAfterProvider(): array
             'exclude start date is before interval' => [
                 'interval' => Period::fromMonth(2012, 2),
                 'input' => Period::after('2012-01-01', '1 MONTH', Bounds::ExcludeStartIncludeEnd),
-                'expected' => true,
+                'expected' => false,
             ],
             'exclude start date is not before interval' => [
-                'interval' => Period::fromMonth(2012, 2),
+                'interval' => Period::fromMonth(2012, 3),
                 'input' => Period::after('2012-01-01', '1 MONTH', Bounds::ExcludeStartIncludeEnd),
                 'expected' => true,
             ],