Test stringable classes for create (#12)

* Test stringable classes for create

Author: dereuromark

src/Decimal.php

@@ -94,6 +94,10 @@ protected function parseValue(object|string|float|int $value): string
             throw new InvalidArgumentException('Invalid value');
         }
 
+        if ($value instanceof Stringable) {
+            $value = (string)$value;
+        }
+
         if (is_string($value) && !is_numeric(trim($value))) {
             throw new InvalidArgumentException('Invalid non numeric value');
         }

tests/DecimalTest.php

@@ -13,6 +13,7 @@
 use InvalidArgumentException;
 use PhpCollective\DecimalObject\Decimal;
 use PHPUnit\Framework\TestCase;
+use Stringable;
 use TypeError;
 
 class DecimalTest extends TestCase
@@ -58,6 +59,27 @@ public function testCreate(mixed $value, string $expected): void
         $this->assertSame($expected, (string)$decimal);
     }
 
+    /**
+     * @return void
+     */
+    public function testCreateInvalidObject(): void
+    {
+        $objectStringable = new class implements Stringable
+        {
+            /**
+             * @return string
+             */
+            public function __toString(): string
+            {
+                return 'foo';
+            }
+        };
+
+        $this->expectException(InvalidArgumentException::class);
+
+        Decimal::create($objectStringable);
+    }
+
     /**
      * @return array
      */
@@ -74,6 +96,17 @@ public function __toString(): string
             }
         };
 
+        $objectStringable = new class implements Stringable
+        {
+            /**
+             * @return string
+             */
+            public function __toString(): string
+            {
+                return '12.12';
+            }
+        };
+
         return [
             [1.1, '1.1'],
             [-23, '-23'],
@@ -102,6 +135,7 @@ public function __toString(): string
             ['622000000000000000000000', '622000000000000000000000'],
             ['3.11e2', '311'],
             [$objectWithToStringMethod, '12.12'],
+            [$objectStringable, '12.12'],
         ];
     }