Braintree: Add unit test for LocaleResolver

app/code/Magento/Braintree/Test/Unit/Model/LocaleResolverTest.php

@@ -0,0 +1,138 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Braintree\Test\Unit\Model;
+
+use Magento\Braintree\Gateway\Config\PayPal\Config;
+use Magento\Braintree\Model\LocaleResolver;
+use Magento\Framework\Locale\ResolverInterface;
+
+/**
+ * @covers \Magento\Braintree\Model\LocaleResolver
+ */
+class LocaleResolverTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * Testable Object
+     *
+     * @var LocaleResolver
+     */
+    private $localeResolver;
+
+    /**
+     * @var Config|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $configMock;
+
+    /**
+     * @var ResolverInterface|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $resolverMock;
+
+    /**
+     * Set Up
+     *
+     * @return void
+     */
+    protected function setUp()
+    {
+        $this->configMock = $this->createMock(Config::class);
+        $this->resolverMock = $this->createMock(ResolverInterface::class);
+        $this->localeResolver = new LocaleResolver($this->resolverMock, $this->configMock);
+    }
+
+    /**
+     * Test getDefaultLocalePath method
+     *
+     * @return void
+     */
+    public function testGetDefaultLocalePath()
+    {
+        $expected = 'general/locale/code';
+        $this->resolverMock->expects($this->once())->method('getDefaultLocalePath')->willReturn($expected);
+        $actual = $this->localeResolver->getDefaultLocalePath();
+        self::assertEquals($expected, $actual);
+    }
+
+    /**
+     * Test setDefaultLocale method
+     *
+     * @return void
+     */
+    public function testSetDefaultLocale()
+    {
+        $defaultLocale = 'en_US';
+        $this->resolverMock->expects($this->once())->method('setDefaultLocale')->with($defaultLocale);
+        $this->localeResolver->setDefaultLocale($defaultLocale);
+    }
+
+    /**
+     * Test getDefaultLocale method
+     *
+     * @return void
+     */
+    public function testGetDefaultLocale()
+    {
+        $expected = 'fr_FR';
+        $this->resolverMock->expects($this->once())->method('getDefaultLocale')->willReturn($expected);
+        $actual = $this->localeResolver->getDefaultLocale();
+        self::assertEquals($expected, $actual);
+    }
+
+    /**
+     * Test setLocale method
+     *
+     * @return void
+     */
+    public function testSetLocale()
+    {
+        $locale = 'en_GB';
+        $this->resolverMock->expects($this->once())->method('setLocale')->with($locale);
+        $this->localeResolver->setLocale($locale);
+    }
+
+    /**
+     * Test getLocale method
+     *
+     * @return void
+     */
+    public function testGetLocale()
+    {
+        $locale = 'en_TEST';
+        $allowedLocales = 'en_US,en_GB,en_AU,da_DK,fr_FR,fr_CA,de_DE,zh_HK,it_IT,nl_NL';
+        $this->resolverMock->expects($this->once())->method('getLocale')->willReturn($locale);
+        $this->configMock->expects($this->once())->method('getValue')->with('supported_locales')
+            ->willReturn($allowedLocales);
+
+        $expected = 'en_US';
+        $actual = $this->localeResolver->getLocale();
+        self::assertEquals($expected, $actual);
+    }
+
+    /**
+     * Test emulate method
+     *
+     * @return void
+     */
+    public function testEmulate()
+    {
+        $scopeId = 12;
+        $this->resolverMock->expects($this->once())->method('emulate')->with($scopeId);
+        $this->localeResolver->emulate($scopeId);
+    }
+
+    /**
+     * Test revert method
+     *
+     * @return void
+     */
+    public function testRevert()
+    {
+        $this->resolverMock->expects($this->once())->method('revert');
+        $this->localeResolver->revert();
+    }
+}