Implement JsonSerializable in AbstractMoney

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## UNRELEASED (0.7.0)
+
+💥 **Breaking changes**
+
+- JSON extension is now required for PHP 7.4 (always available with PHP >= 8.0)
+
+✨ **New features**
+
+- `Money` and `RationalMoney` now implement `JsonSerializable`
+
 ## [0.6.0](https://github.com/brick/money/releases/tag/0.6.0) - 2022-08-02
 
 💥 **Breaking changes**

composer.json

@@ -10,6 +10,7 @@
     "license": "MIT",
     "require": {
         "php": "^7.4 || ^8.0",
+        "ext-json": "*",
         "brick/math": "~0.10.1"
     },
     "require-dev": {

src/AbstractMoney.php

@@ -10,11 +10,12 @@
 use Brick\Math\RoundingMode;
 use Brick\Math\Exception\MathException;
 use Brick\Math\Exception\RoundingNecessaryException;
+use JsonSerializable;
 
 /**
  * Base class for Money and RationalMoney.
  */
-abstract class AbstractMoney implements MoneyContainer
+abstract class AbstractMoney implements MoneyContainer, JsonSerializable
 {
     abstract public function getAmount() : BigNumber;
 
@@ -240,4 +241,12 @@ final protected function getAmountOf($that)
 
         return $that;
     }
+
+    final public function jsonSerialize(): array
+    {
+        return [
+            'amount' => (string) $this->getAmount(),
+            'currency' => (string) $this->getCurrency()
+        ];
+    }
 }

tests/MoneyTest.php

@@ -1004,4 +1004,21 @@ public function testTotalOfDifferentCurrenciesThrowsException() : void
             Money::of('1.00', 'USD')
         );
     }
+
+    /**
+     * @dataProvider providerJsonSerialize
+     */
+    public function testJsonSerialize(Money $money, array $expected): void
+    {
+        self::assertSame($expected, $money->jsonSerialize());
+        self::assertSame(json_encode($expected), json_encode($money));
+    }
+
+    public function providerJsonSerialize(): array
+    {
+        return [
+            [Money::of('3.5', 'EUR'), ['amount' => '3.50', 'currency' => 'EUR']],
+            [Money::of('3.888923', 'GBP', new CustomContext(8)), ['amount' => '3.88892300', 'currency' => 'GBP']]
+        ];
+    }
 }

tests/RationalMoneyTest.php

@@ -209,4 +209,21 @@ public function providerTo() : array
             [['123456789/256', 'CHF'], new AutoContext(), RoundingMode::UNNECESSARY, 'CHF 482253.08203125']
         ];
     }
+
+    /**
+     * @dataProvider providerJsonSerialize
+     */
+    public function testJsonSerialize(RationalMoney $money, array $expected): void
+    {
+        self::assertSame($expected, $money->jsonSerialize());
+        self::assertSame(json_encode($expected), json_encode($money));
+    }
+
+    public function providerJsonSerialize(): array
+    {
+        return [
+            [RationalMoney::of('3.5', 'EUR'), ['amount' => '35/10', 'currency' => 'EUR']],
+            [RationalMoney::of('3.888923', 'GBP'), ['amount' => '3888923/1000000', 'currency' => 'GBP']]
+        ];
+    }
 }