Only run encoding tests on CRuby

Author: kddnewton

docs/encoding.md

@@ -12,38 +12,56 @@ If the file is not encoded in UTF-8, the user must specify the encoding in a "ma
 
 The key of the comment can be either "encoding" or "coding". The value of the comment must be a string that is a valid encoding name. The encodings that prism supports by default are:
 
-* `ascii`
-* `ascii-8bit`
-* `big5`
-* `binary`
-* `cp932`
-* `euc-jp`
-* `gbk`
-* `iso-8859-1`
-* `iso-8859-2`
-* `iso-8859-3`
-* `iso-8859-4`
-* `iso-8859-5`
-* `iso-8859-6`
-* `iso-8859-7`
-* `iso-8859-8`
-* `iso-8859-9`
-* `iso-8859-10`
-* `iso-8859-11`
-* `iso-8859-13`
-* `iso-8859-14`
-* `iso-8859-15`
-* `iso-8859-16`
-* `koi8-r`
-* `shift_jis`
-* `sjis`
-* `us-ascii`
-* `utf-8`
-* `utf8-mac`
-* `windows-31j`
-* `windows-1250`
-* `windows-1251`
-* `windows-1252`
+* `ASCII-8BIT`
+* `Big5`
+* `CP51932`
+* `CP850`
+* `CP852`
+* `CP855`
+* `EUC-JP`
+* `GBK`
+* `IBM437`
+* `IBM720`
+* `IBM737`
+* `IBM775`
+* `IBM852`
+* `IBM855`
+* `IBM857`
+* `IBM860`
+* `IBM861`
+* `IBM862`
+* `ISO-8859-1`
+* `ISO-8859-2`
+* `ISO-8859-3`
+* `ISO-8859-4`
+* `ISO-8859-5`
+* `ISO-8859-6`
+* `ISO-8859-7`
+* `ISO-8859-8`
+* `ISO-8859-9`
+* `ISO-8859-10`
+* `ISO-8859-11`
+* `ISO-8859-13`
+* `ISO-8859-14`
+* `ISO-8859-15`
+* `ISO-8859-16`
+* `KOI8-R`
+* `Shift_JIS`
+* `US-ASCII`
+* `UTF-8`
+* `UTF8-MAC`
+* `Windows-1250`
+* `Windows-1251`
+* `Windows-1252`
+* `Windows-1253`
+* `Windows-1254`
+* `Windows-1255`
+* `Windows-1256`
+* `Windows-1257`
+* `Windows-1258`
+* `Windows-31J`
+* `macIceland`
+* `macRomania`
 
 For each of these encodings, prism provides a function for checking if the subsequent bytes form an alphabetic or alphanumeric character.
 

test/prism/encoding_test.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+return if RUBY_ENGINE != "ruby"
+
 require_relative "test_helper"
 
 module Prism
@@ -85,7 +87,6 @@ def test_coding_with_whitespace
       assert_equal Encoding.find("ascii-8bit"), actual
     end
 
-
     def test_emacs_style
       result = Prism.parse("# -*- coding: utf-8 -*-\n'string'")
       actual = result.value.statements.body.first.unescaped.encoding
@@ -200,7 +201,7 @@ def assert_encoding(encoding, name, range)
 
       range.each do |codepoint|
         character = codepoint.chr(encoding)
-  
+
         if character.match?(/[[:alpha:]]/)
           if character.match?(/[[:upper:]]/)
             assert_encoding_constant(name, character)