Refactor the new human formatter to a new test class for better test organization

Author: Ayesh

src/Timer.php

@@ -90,8 +90,7 @@ private static function formatTime(float $value, $format): string {
     }
   }
 
-  private static function secondsToTimeString(float $time): string
-  {
+  private static function secondsToTimeString(float $time): string {
     $ms = \round($time * 1000);
 
     foreach (self::TIMES as $unit => $value) {

tests/TimerFormatterTest.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Ayesh\PHP_Timer\Tests;
+
+use Ayesh\PHP_Timer\Timer;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @package Ayesh\PHP_Timer\Tests
+ * @group time-sensitive
+ */
+class TimerFormatterTest extends TestCase {
+  public function testTimerFormat_Human(): void {
+    Timer::start(__FUNCTION__);
+
+    usleep(1000);
+    $read = Timer::read(__FUNCTION__, Timer::FORMAT_HUMAN);
+    $this->assertSame('1 ms', $read);
+
+    sleep(1);
+    $read = Timer::read(__FUNCTION__, Timer::FORMAT_HUMAN);
+    $this->assertSame('1 second', $read);
+  }
+}

tests/TimerTest.php

@@ -120,18 +120,6 @@ public function testTimerFormat_Seconds() {
     $this->assertGreaterThanOrEqual('0.002', $read);
   }
 
-  public function testTimerFormat_Human() {
-    Timer::start(__FUNCTION__);
-
-    usleep(1000);
-    $read = Timer::read(__FUNCTION__, Timer::FORMAT_HUMAN);
-    $this->assertSame('1 ms', $read);
-
-    sleep(1);
-    $read = Timer::read(__FUNCTION__, Timer::FORMAT_HUMAN);
-    $this->assertSame('1 second', $read);
-  }
-
   public function testTimerFormat_Unspecified() {
     Timer::start(__FUNCTION__);
     usleep(1500);