From 695955b8fa3d38a2316eb76bde164e1f1f884085 Mon Sep 17 00:00:00 2001
From: Benjamin Morel <benjamin.morel@gmail.com>
Date: Mon, 20 Aug 2018 23:07:07 +0200
Subject: [PATCH] Money::formatTo() can now format amount as a whole number

---
 composer.json       |  2 +-
 src/Money.php       | 12 +++++++++---
 tests/MoneyTest.php | 26 ++++++++++++++++++--------
 3 files changed, 28 insertions(+), 12 deletions(-)

diff --git a/composer.json b/composer.json
index 9f8c14c..1e8d1c6 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
     "license": "MIT",
     "require": {
         "php": ">=7.1",
-        "brick/math": "~0.6.2 || 0.7.*"
+        "brick/math": "~0.7.3"
     },
     "require-dev": {
         "phpunit/phpunit": "7.*",
diff --git a/src/Money.php b/src/Money.php
index 42ebe91..e1e86c9 100644
--- a/src/Money.php
+++ b/src/Money.php
@@ -634,7 +634,7 @@ public function convertedTo($currency, $exchangeRate, Context $context = null, i
      * Note that NumberFormatter internally represents values using floating point arithmetic,
      * so discrepancies can appear when formatting very large monetary values.
      *
-     * @param \NumberFormatter $formatter
+     * @param \NumberFormatter $formatter The formatter to format with.
      *
      * @return string
      */
@@ -652,15 +652,21 @@ public function formatWith(\NumberFormatter $formatter) : string
      * Note that this method uses NumberFormatter, which internally represents values using floating point arithmetic,
      * so discrepancies can appear when formatting very large monetary values.
      *
-     * @param string $locale
+     * @param string $locale           The locale to format to.
+     * @param bool   $allowWholeNumber Whether to allow formatting as a whole number if the amount has no fraction.
      *
      * @return string
      */
-    public function formatTo(string $locale) : string
+    public function formatTo(string $locale, bool $allowWholeNumber = false) : string
     {
         $scale = $this->amount->getScale();
 
         $formatter = new \NumberFormatter($locale, \NumberFormatter::CURRENCY);
+
+        if ($allowWholeNumber && ! $this->amount->hasNonZeroFractionalPart()) {
+            $scale = 0;
+        }
+
         $formatter->setAttribute(\NumberFormatter::MIN_FRACTION_DIGITS, $scale);
         $formatter->setAttribute(\NumberFormatter::MAX_FRACTION_DIGITS, $scale);
 
diff --git a/tests/MoneyTest.php b/tests/MoneyTest.php
index 022cd58..7921c90 100644
--- a/tests/MoneyTest.php
+++ b/tests/MoneyTest.php
@@ -884,13 +884,14 @@ public function providerFormatWith()
     /**
      * @dataProvider providerFormatTo
      *
-     * @param array  $money    The money to test.
-     * @param string $locale   The target locale.
-     * @param string $expected The expected output.
+     * @param array  $money            The money to test.
+     * @param string $locale           The target locale.
+     * @param bool   $allowWholeNumber Whether to allow formatting as a whole number if the amount has no fraction.
+     * @param string $expected         The expected output.
      */
-    public function testFormatTo(array $money, $locale, $expected)
+    public function testFormatTo(array $money, $locale, $allowWholeNumber, $expected)
     {
-        $this->assertSame($expected, Money::of(...$money)->formatTo($locale));
+        $this->assertSame($expected, Money::of(...$money)->formatTo($locale, $allowWholeNumber));
     }
 
     /**
@@ -899,9 +900,18 @@ public function testFormatTo(array $money, $locale, $expected)
     public function providerFormatTo()
     {
         return [
-            [['1.23', 'USD'], 'en_US', '$1.23'],
-            [['1.23', 'USD'], 'fr_FR', '1,23 $US'],
-            [['1.23', 'EUR'], 'fr_FR', '1,23 €'],
+            [['1.23', 'USD'], 'en_US', false, '$1.23'],
+            [['1.23', 'USD'], 'fr_FR', false, '1,23 $US'],
+            [['1.23', 'EUR'], 'fr_FR', false, '1,23 €'],
+            [['1.234', 'EUR', new CustomContext(3)], 'fr_FR', false, '1,234 €'],
+            [['234.0', 'EUR', new CustomContext(1)], 'fr_FR', false, '234,0 €'],
+            [['234.0', 'EUR', new CustomContext(1)], 'fr_FR', true, '234 €'],
+            [['234.00', 'GBP'], 'en_GB', false, '£234.00'],
+            [['234.00', 'GBP'], 'en_GB', true, '£234'],
+            [['234.000', 'EUR', new CustomContext(3)], 'fr_FR', false, '234,000 €'],
+            [['234.000', 'EUR', new CustomContext(3)], 'fr_FR', true, '234 €'],
+            [['234.001', 'GBP', new CustomContext(3)], 'en_GB', false, '£234.001'],
+            [['234.001', 'GBP', new CustomContext(3)], 'en_GB', true, '£234.001'],
         ];
     }