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vendor/yosymfony/parser-utils/tests/AbstractParserTest.php

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+<?php
+/*
+ * This file is part of the Yosymfony\ParserUtils package.
+ *
+ * (c) YoSymfony <http://github.com/yosymfony>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Yosymfony\ParserUtils\Test;
+
+use PHPUnit\Framework\TestCase;
+use Yosymfony\ParserUtils\AbstractParser;
+use Yosymfony\ParserUtils\BasicLexer;
+use Yosymfony\ParserUtils\SyntaxErrorException;
+use Yosymfony\ParserUtils\TokenStream;
+
+class AbstractParserTest extends TestCase
+{
+    private $parser;
+
+    public function setup()
+    {
+        $lexer = new BasicLexer([
+            '/^([0-9]+)/x' => 'T_NUMBER',
+            '/^(\+)/x' => 'T_PLUS',
+            '/^(-)/x' => 'T_MINUS',
+            '/^\s+/' => 'T_SPACE',
+        ]);
+
+        $this->parser = $this->getMockBuilder(AbstractParser::class)
+            ->setConstructorArgs([$lexer])
+            ->getMockForAbstractClass();
+        $this->parser->expects($this->any())
+            ->method('parseImplementation')
+            ->will($this->returnCallback(function (TokenStream $stream) {
+                $result = $stream->matchNext('T_NUMBER');
+
+                while ($stream->isNextAny(['T_PLUS', 'T_MINUS'])) {
+                    switch ($stream->moveNext()->getName()) {
+                        case 'T_PLUS':
+                            $result += $stream->matchNext('T_NUMBER');
+                            break;
+                        case 'T_MINUS':
+                            $result -= $stream->matchNext('T_NUMBER');
+                            break;
+                        default:
+                            throw new SyntaxErrorException("Something went wrong");
+                            break;
+                    }
+                }
+
+                return $result;
+            }));
+    }
+
+    public function testParseMustReturnTheResultOfTheSum()
+    {
+        $this->assertEquals(2, $this->parser->parse('1 + 1'));
+    }
+}