1 files changed, 12 insertions, 0 deletions
diff --git a/test/csv/test_csv_parsing.rb b/test/csv/test_csv_parsing.rb
index a9e6cd400c..e3609b7648 100644
--- a/test/csv/test_csv_parsing.rb
+++ b/test/csv/test_csv_parsing.rb
@@ -115,6 +115,18 @@ class TestCSVParsing < Test::Unit::TestCase
     assert_equal(Array.new, CSV.parse_line("\n1,2,3\n"))
   end
 
+  def test_non_regex_edge_cases
+    # An early version of the non-regex parser fails this test
+    [ [ "foo,\"foo,bar,baz,foo\",\"foo\"",
+        ["foo", "foo,bar,baz,foo", "foo"] ] ].each do |edge_case|
+      assert_equal(edge_case.last, CSV.parse_line(edge_case.first))
+    end
+
+    assert_raise(CSV::MalformedCSVError) do
+      CSV.parse_line("1,\"23\"4\"5\", 6")
+    end
+  end
+
   def test_malformed_csv
     assert_raise(CSV::MalformedCSVError) do
       CSV.parse_line("1,2\r,3", row_sep: "\n")