1 files changed, 14 insertions, 0 deletions
diff --git a/spec/ruby/library/csv/readlines_spec.rb b/spec/ruby/library/csv/readlines_spec.rb
index 387730db16..452effd343 100644
--- a/spec/ruby/library/csv/readlines_spec.rb
+++ b/spec/ruby/library/csv/readlines_spec.rb
@@ -20,4 +20,18 @@ describe "CSV#readlines" do
     file = CSV.new "a,, b, c"
     file.readlines.should == [["a", nil, " b", " c"]]
   end
+
+  it "raises CSV::MalformedCSVError exception if input is illegal" do
+    csv = CSV.new('"quoted" field')
+    -> { csv.readlines }.should raise_error(CSV::MalformedCSVError)
+  end
+
+  ruby_version_is '2.4' do
+    it "handles illegal input with the liberal_parsing option" do
+      illegal_input = '"Johnson, Dwayne",Dwayne "The Rock" Johnson'
+      csv = CSV.new(illegal_input, liberal_parsing: true)
+      result = csv.readlines
+      result.should == [["Johnson, Dwayne", 'Dwayne "The Rock" Johnson']]
+    end
+  end
 end