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Accepted Public Pull Requests:
 - magento/magento2#17839: [Backport] [Search] Unit test for SynonymAnalyzer model. 2.1 back port. (by @furseyev)

Author: Stanislav Idolov

app/code/Magento/Search/Test/Unit/Model/SynonymAnalyzerTest.php

@@ -0,0 +1,86 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Search\Test\Unit\Model;
+
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+
+/**
+ * Class SynonymAnalyzerTest
+ */
+class SynonymAnalyzerTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var \Magento\Search\Model\SynonymAnalyzer
+     */
+    private $synonymAnalyzer;
+
+    /**
+     * @var \Magento\Search\Model\SynonymReader |\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $synReaderModel;
+
+    /**
+     * Test set up
+     */
+    protected function setUp()
+    {
+        $helper = new ObjectManager($this);
+
+        $this->synReaderModel = $this->getMockBuilder(\Magento\Search\Model\SynonymReader::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $this->synonymAnalyzer = $helper->getObject(
+            \Magento\Search\Model\SynonymAnalyzer::class,
+            [
+                'synReader' => $this->synReaderModel,
+            ]
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function testGetSynonymsForPhrase()
+    {
+        $phrase = 'Elizabeth is the british queen';
+        $expected = [
+            0 => [ 0 => "Elizabeth" ],
+            1 => [ 0 => "is" ],
+            2 => [ 0 => "the" ],
+            3 => [ 0 => "british", 1 => "english" ],
+            4 => [ 0 => "queen", 1 => "monarch" ],
+        ];
+        $this->synReaderModel->expects($this->once())
+            ->method('loadByPhrase')
+            ->with($phrase)
+            ->willReturnSelf()
+        ;
+        $this->synReaderModel->expects($this->once())
+            ->method('getData')
+            ->willReturn([
+                ['synonyms' => 'british,english'],
+                ['synonyms' => 'queen,monarch'],
+            ])
+        ;
+
+        $actual = $this->synonymAnalyzer->getSynonymsForPhrase($phrase);
+        $this->assertEquals($expected, $actual);
+    }
+
+    /**
+     * @test
+     *
+     * Empty phrase scenario
+     */
+    public function testGetSynonymsForPhraseEmptyPhrase()
+    {
+        $phrase = '';
+        $expected = [];
+        $actual = $this->synonymAnalyzer->getSynonymsForPhrase($phrase);
+        $this->assertEquals($expected, $actual);
+    }
+}