Add RubyVM::AST#pretty_print

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66140 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 0 deletions

diff --git a/test/test_pp.rb b/test/test_pp.rb
index 5f8216dcce..01a5a409b4 100644
--- a/test/test_pp.rb
+++ b/test/test_pp.rb
@@ -194,4 +194,13 @@ class PPFileStatTest < Test::Unit::TestCase
   end
 end
 
+class PPAbstractSyntaxTree < Test::Unit::TestCase
+  AST = RubyVM::AbstractSyntaxTree
+  def test_literal
+    ast = AST.parse("1")
+    expected = "(SCOPE@1:0-1:1 tbl: [] args: nil body: (LIT@1:0-1:1 1))"
+    assert_equal(expected, PP.singleline_pp(ast, ''.dup))
+  end
+end
+
 end