MAGETWO-57836: Make \Magento\Framework\Escaper::escapeJs() generate valid Json string

Code style fixes

Author: Igor Melnikov

lib/internal/Magento/Framework/Test/Unit/EscaperTest.php

@@ -39,7 +39,7 @@ protected function setUp()
     }
 
     /**
-     * Convert a Unicode Codepoint to a literal UTF-8 character.
+     * Convert a unicode codepoint to a literal UTF-8 character
      *
      * @param int $codepoint Unicode codepoint in hex notation
      * @return string UTF-8 literal string
@@ -51,26 +51,27 @@ protected function codepointToUtf8($codepoint)
         }
         if ($codepoint < 0x800) {
             return chr($codepoint >> 6 & 0x3f | 0xc0)
-            . chr($codepoint & 0x3f | 0x80);
+                . chr($codepoint & 0x3f | 0x80);
         }
         if ($codepoint < 0x10000) {
             return chr($codepoint >> 12 & 0x0f | 0xe0)
-            . chr($codepoint >> 6 & 0x3f | 0x80)
-            . chr($codepoint & 0x3f | 0x80);
+                . chr($codepoint >> 6 & 0x3f | 0x80)
+                . chr($codepoint & 0x3f | 0x80);
         }
         if ($codepoint < 0x110000) {
             return chr($codepoint >> 18 & 0x07 | 0xf0)
-            . chr($codepoint >> 12 & 0x3f | 0x80)
-            . chr($codepoint >> 6 & 0x3f | 0x80)
-            . chr($codepoint & 0x3f | 0x80);
+                . chr($codepoint >> 12 & 0x3f | 0x80)
+                . chr($codepoint >> 6 & 0x3f | 0x80)
+                . chr($codepoint & 0x3f | 0x80);
         }
-        throw new \Exception('Codepoint requested outside of Unicode range');
+        throw new \Exception('Codepoint requested outside of unicode range');
     }
 
     public function testEscapeJsEscapesOwaspRecommendedRanges()
     {
-        $immune = [',', '.', '_']; // Exceptions to escaping ranges
-        for ($chr=0; $chr < 0xFF; $chr++) {
+        // Exceptions to escaping ranges
+        $immune = [',', '.', '_'];
+        for ($chr = 0; $chr < 0xFF; $chr++) {
             if ($chr >= 0x30 && $chr <= 0x39
                 || $chr >= 0x41 && $chr <= 0x5A
                 || $chr >= 0x61 && $chr <= 0x7A