Add a method to get an instance in a different format

Author: Mopolo

src/MagicConstant.php

@@ -150,6 +150,11 @@ public function in(array $values): bool
         return false;
     }
 
+    public function toFormat(string $format): self
+    {
+        return new static($this->getValue($format));
+    }
+
     /**
      * @return string[]
      */

tests/MagicConstantTest.php

@@ -478,4 +478,21 @@ public function allFormatsDataProvider(): array
             ],
         ];
     }
+
+    /** @test */
+    public function get_new_instance_in_specific_format()
+    {
+        /* *** Initialisation *** */
+        $base = FakeMagicConstant::TYPE_ARRAY_FORMATS();
+
+        /* *** Process *** */
+        $instanceFormatA = $base->toFormat(FakeMagicConstant::FORMAT_A);
+        $instanceFormatB = $base->toFormat(FakeMagicConstant::FORMAT_B);
+        $instanceFormatC = $base->toFormat(FakeMagicConstant::FORMAT_C);
+
+        /* *** Assertion *** */
+        self::assertSame('value A', $instanceFormatA->getValue());
+        self::assertSame('value B', $instanceFormatB->getValue());
+        self::assertSame('value C', $instanceFormatC->getValue());
+    }
 }