test_ast.rb: Add test cases of heredoc columns

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63570 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_ast.rb

@@ -138,4 +138,16 @@ class TestAst < Test::Unit::TestCase
     assert_equal("NODE_STR", node.type)
     assert_equal(0, node.first_column)
   end
+
+  def test_column_of_heredoc
+    node = RubyVM::AST.parse("<<-SRC\nddddddd\nSRC\n").children[1]
+    assert_equal("NODE_STR", node.type)
+    assert_equal(0, node.first_column)
+    assert_equal(6, node.last_column)
+
+    node = RubyVM::AST.parse("<<SRC\nddddddd\nSRC\n").children[1]
+    assert_equal("NODE_STR", node.type)
+    assert_equal(0, node.first_column)
+    assert_equal(5, node.last_column)
+  end
 end