Add RationalMoney::simplified() method

src/RationalMoney.php

@@ -145,6 +145,16 @@ public function dividedBy($that) : RationalMoney
         return new self($amount, $this->currency);
     }
 
+    /**
+     * Returns a copy of this BigRational, with the amount simplified.
+     *
+     * @return RationalMoney
+     */
+    public function simplified() : RationalMoney
+    {
+        return new self($this->amount->simplified(), $this->currency);
+    }
+
     /**
      * @return string
      */

tests/RationalMoneyTest.php

@@ -177,6 +177,33 @@ public function providerDividedBy()
         ];
     }
 
+    /**
+     * @dataProvider providerSimplified
+     *
+     * @param array  $rationalMoney
+     * @param string $expected
+     */
+    public function testSimplified(array $rationalMoney, $expected)
+    {
+        $rationalMoney = RationalMoney::of(...$rationalMoney);
+
+        $actual = $rationalMoney->simplified();
+        $this->assertRationalMoneyEquals($expected, $actual);
+    }
+
+    /**
+     * @return array
+     */
+    public function providerSimplified() : array
+    {
+        return [
+            [['123456/10000', 'USD'], 'USD 7716/625'],
+            [['695844/45600', 'CAD'], 'CAD 57987/3800'],
+            [['368022/405840', 'EUR'], 'EUR 61337/67640'],
+            [['-671244/45600', 'GBP'], 'GBP -55937/3800'],
+        ];
+    }
+
     /**
      * @dataProvider providerTo
      *