Ability to add new currencies without replacing default ones (#3)

.gitignore

@@ -2,3 +2,4 @@ vendor
 composer.phar
 composer.lock
 phpunit.xml
+bin/

CHANGELOG.md

@@ -0,0 +1,9 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## 0.10.0 - 2020-03-21
+### Added
+- Added `\Maba\Component\Monetary\Information\MoneyInformationProvider::addAvailableCurrencies` method to add additional currencies and precisions

composer.json

@@ -22,5 +22,8 @@
             "Maba\\Component\\Monetary\\": "src",
             "Maba\\Component\\Monetary\\Tests\\": "test"
         }
+    },
+    "config": {
+        "bin-dir": "bin"
     }
 }

src/Information/MoneyInformationProvider.php

@@ -13,7 +13,7 @@ class MoneyInformationProvider implements MoneyInformationProviderInterface
 {
     const DEFAULT_PRECISION = 2;
 
-    static protected $defaultCurrencyPrecisions = array (
+    static protected $defaultCurrencyPrecisions = array(
         'BHD' => 3,
         'BIF' => 0,
         'BYR' => 0,
@@ -238,4 +238,12 @@ public function getSupportedCurrencies()
         return $this->availableCurrencies;
     }
 
-} 
+    public function addAvailableCurrencies(array $availableCurrencies, array $currencyPrecisions = null)
+    {
+        $this->currencyPrecisions = $currencyPrecisions !== null
+            ? array_replace($this->currencyPrecisions, $currencyPrecisions)
+            : $this->currencyPrecisions
+        ;
+        $this->availableCurrencies = array_unique(array_merge($this->availableCurrencies, $availableCurrencies));
+    }
+}

test/Information/MoneyInformationProviderTest.php

@@ -0,0 +1,93 @@
+<?php
+
+namespace Maba\Component\Monetary\Tests\Information;
+
+use PHPUnit_Framework_TestCase;
+use Maba\Component\Monetary\Information\MoneyInformationProvider;
+
+class MoneyInformationProviderTest extends PHPUnit_Framework_TestCase
+{
+    private $currencyPrecisions;
+    private $availableCurrencies;
+
+    public function setUp()
+    {
+        $this->currencyPrecisions = array(
+            'BHD' => 3,
+            'BIF' => 0,
+            'BYR' => 0,
+            'CLF' => 4,
+            'CLP' => 0,
+        ) ;
+        $this->availableCurrencies = array(
+            'BHD',
+            'BIF',
+            'BYR',
+            'CLF',
+            'CLP',
+        );
+    }
+
+    /**
+     * @param array $availableCurrencies
+     * @param array $expected
+     *
+     * @dataProvider dataProviderGetSupportedCurrenciesAfterAddingNewOnes
+     */
+    public function testGetSupportedCurrenciesAfterAddingNewOnes(array $availableCurrencies, array $expected)
+    {
+        $moneyInformationProvider = new MoneyInformationProvider($this->currencyPrecisions,$this->availableCurrencies);
+        $moneyInformationProvider->addAvailableCurrencies($availableCurrencies);
+
+        $this->assertSame($expected, $moneyInformationProvider->getSupportedCurrencies());
+    }
+
+    public function dataProviderGetSupportedCurrenciesAfterAddingNewOnes()
+    {
+        return array(
+            'adding existing currency' => array(
+                array('BHD', 'BIF'),
+                array('BHD', 'BIF', 'BYR', 'CLF', 'CLP'),
+            ),
+            'adding new currency' => array(
+                array('XAU'),
+                array('BHD', 'BIF', 'BYR', 'CLF', 'CLP', 'XAU'),
+            ),
+        );
+    }
+
+    /**
+     * @param string $currency
+     * @param array|null $precision
+     * @param string $expected
+     *
+     * @dataProvider dataProviderGetDefaultCurrency
+     */
+    public function testGetDefaultPrecision($currency, $expected, array $precision = null)
+    {
+        $moneyInformationProvider = new MoneyInformationProvider($this->currencyPrecisions, $this->availableCurrencies);
+        $moneyInformationProvider->addAvailableCurrencies(array($currency), $precision);
+
+        $this->assertSame($expected, $moneyInformationProvider->getDefaultPrecision($currency));
+    }
+
+    public function dataProviderGetDefaultCurrency()
+    {
+        return array(
+            'adding existing currency with different precision' => array(
+                'BHD',
+                4,
+                array('BHD' => 4),
+            ),
+            'adding new currency with precision' => array(
+                'XAU',
+                6,
+                array('XAU' => 6),
+            ),
+            'adding new currency without precision' => array(
+                'XAU',
+                MoneyInformationProvider::DEFAULT_PRECISION,
+            ),
+        );
+    }
+}