Add Composer autoloading functions and PHPStan for testing

vendor/nikic/php-parser/test/PhpParser/Node/Scalar/StringTest.php

@@ -0,0 +1,61 @@
+<?php declare(strict_types=1);
+
+namespace PhpParser\Node\Scalar;
+
+class StringTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @dataProvider provideTestParseEscapeSequences
+     */
+    public function testParseEscapeSequences($expected, $string, $quote) {
+        $this->assertSame(
+            $expected,
+            String_::parseEscapeSequences($string, $quote)
+        );
+    }
+
+    /**
+     * @dataProvider provideTestParse
+     */
+    public function testCreate($expected, $string) {
+        $this->assertSame(
+            $expected,
+            String_::parse($string)
+        );
+    }
+
+    public function provideTestParseEscapeSequences() {
+        return [
+            ['"',              '\\"',              '"'],
+            ['\\"',            '\\"',              '`'],
+            ['\\"\\`',         '\\"\\`',           null],
+            ["\\\$\n\r\t\f\v", '\\\\\$\n\r\t\f\v', null],
+            ["\x1B",           '\e',               null],
+            [chr(255),         '\xFF',             null],
+            [chr(255),         '\377',             null],
+            [chr(0),           '\400',             null],
+            ["\0",             '\0',               null],
+            ['\xFF',           '\\\\xFF',          null],
+        ];
+    }
+
+    public function provideTestParse() {
+        $tests = [
+            ['A', '\'A\''],
+            ['A', 'b\'A\''],
+            ['A', '"A"'],
+            ['A', 'b"A"'],
+            ['\\', '\'\\\\\''],
+            ['\'', '\'\\\'\''],
+        ];
+
+        foreach ($this->provideTestParseEscapeSequences() as $i => $test) {
+            // skip second and third tests, they aren't for double quotes
+            if ($i !== 1 && $i !== 2) {
+                $tests[] = [$test[0], '"' . $test[1] . '"'];
+            }
+        }
+
+        return $tests;
+    }
+}