[GR-37274] Fix or exclude ripper parsing tests.

PullRequest: truffleruby/3224

Author: aardvark179

test/mri/excludes/TestRipper/Generic.rb

@@ -1 +1,2 @@
-exclude :"test_parse_files:ext", "needs investigation"
+exclude :"test_parse_files:ext", "Depends on MRI repository structure"
+exclude :"test_parse_files:sample", "Depends on MRI repository structure"

test/mri/tests/ripper/assert_parse_files.rb

@@ -3,7 +3,8 @@
 
 module TestRipper; end
 class TestRipper::Generic < Test::Unit::TestCase
-  SRCDIR = File.expand_path("../../..", __FILE__)
+  # Changed from MRI to reflect the different relative path of the test suite.
+  SRCDIR = File.expand_path("../../../../..", __FILE__)
 
   def assert_parse_files(dir, pattern = "**/*.rb")
     assert_separately(%W[--disable-gem -rripper - #{SRCDIR}/#{dir} #{pattern}],