Changes to timew() and wtime() to leverage last 2 bits for 4 year timestamp, making msgid checking valid according to FTSC. Added a test suite for timew()/wtime().

tests/Unit/TimeWTest.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Tests\Unit;
+
+use Carbon\Carbon;
+use PHPUnit\Framework\TestCase;
+
+class TimeWTest extends TestCase
+{
+    /**
+     * A basic unit test example.
+     */
+    public function test_timew(): void
+    {
+        $date = Carbon::createFromFormat('Y-m-d H:i:s.v','2023-12-07 12:13:14.567');
+
+		$this->assertEquals(4042011877,timew($date));
+
+		$date = Carbon::createFromFormat('Y-m-d H:i:s.v','2019-12-07 12:13:14.567');
+
+		$this->assertEquals(4042011877,timew($date));
+
+		$date = Carbon::createFromFormat('Y-m-d H:i:s.v','2022-12-07 01:28:50.400');
+
+		$this->assertEquals(2967565092,timew($date));
+    }
+
+	/**
+	 * A basic unit test example.
+	 */
+	public function test_wtime(): void
+	{
+		$date = Carbon::createFromFormat('Y-m-d H:i:s.v','2023-12-07 12:13:14.5');
+
+		$this->assertEquals($date,wtime(4042011877,2022));
+
+		$date = Carbon::createFromFormat('Y-m-d H:i:s.v','2019-12-07 12:13:14.5');
+
+		$this->assertEquals($date,wtime(4042011877,2018));
+
+		$date = Carbon::createFromFormat('Y-m-d H:i:s.v','2022-12-07 01:28:50.400');
+
+		$this->assertEquals($date,wtime(2967565092,2022));
+	}
+
+	public function test_random_time(): void
+	{
+		$times = [];
+		$now = Carbon::now()->milli(rand(0,9)*100);
+
+		for ($i=0;$i<1000;$i++) {
+			$ran = $now->clone()->addYears(rand(-50,50))->addDays(rand(-365,365))->addHours(rand(-24,24))->addMinutes(rand(-60,60))->addSeconds(rand(-60,60));
+			$times[timew($ran)] = $ran;
+		}
+
+		foreach ($times as $wtime => $time)
+			$this->assertEquals($time,wtime($wtime,$time->year));
+	}
+}