Subiendo proyecto completo sin restricciones de git ignore

vendor/dasprid/enum/test/Planet.php

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+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\EnumTest;
+
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * @method static self MERCURY()
+ * @method static self VENUS()
+ * @method static self EARTH()
+ * @method static self MARS()
+ * @method static self JUPITER()
+ * @method static self SATURN()
+ * @method static self URANUS()
+ * @method static self NEPTUNE()
+ */
+final class Planet extends AbstractEnum
+{
+    protected const MERCURY = [3.303e+23, 2.4397e6];
+    protected const VENUS = [4.869e+24, 6.0518e6];
+    protected const EARTH = [5.976e+24, 6.37814e6];
+    protected const MARS = [6.421e+23, 3.3972e6];
+    protected const JUPITER = [1.9e+27, 7.1492e7];
+    protected const SATURN = [5.688e+26, 6.0268e7];
+    protected const URANUS = [8.686e+25, 2.5559e7];
+    protected const NEPTUNE = [1.024e+26, 2.4746e7];
+
+    /**
+     * Universal gravitational constant.
+     */
+    private const G = 6.67300E-11;
+
+    /**
+     * Mass in kilograms.
+     *
+     * @var float
+     */
+    private $mass;
+
+    /**
+     * Radius in meters.
+     *
+     * @var float
+     */
+    private $radius;
+
+    protected function __construct(float $mass, float $radius)
+    {
+        $this->mass = $mass;
+        $this->radius = $radius;
+    }
+
+    public function mass() : float
+    {
+        return $this->mass;
+    }
+
+    public function radius() : float
+    {
+        return $this->radius;
+    }
+
+    public function surfaceGravity() : float
+    {
+        return self::G * $this->mass / ($this->radius * $this->radius);
+    }
+
+    public function surfaceWeight(float $otherMass) : float
+    {
+        return $otherMass * $this->surfaceGravity();
+    }
+}