1 files changed, 70 insertions, 0 deletions
diff --git a/test/csv/write/test_quote_empty.rb b/test/csv/write/test_quote_empty.rb
new file mode 100644
index 0000000000..70f73dad4a
--- /dev/null
+++ b/test/csv/write/test_quote_empty.rb
@@ -0,0 +1,70 @@
+# -*- coding: utf-8 -*-
+# frozen_string_literal: false
+
+require_relative "../helper"
+
+module TestCSVWriteQuoteEmpty
+  def test_quote_empty_default
+    assert_equal(%Q["""",""#{$INPUT_RECORD_SEPARATOR}],
+                 generate_line([%Q["], ""]))
+  end
+
+  def test_quote_empty_false
+    assert_equal(%Q["""",#{$INPUT_RECORD_SEPARATOR}],
+                 generate_line([%Q["], ""],
+                               quote_empty: false))
+  end
+
+  def test_empty_default
+    assert_equal(%Q[foo,"",baz#{$INPUT_RECORD_SEPARATOR}],
+                 generate_line(["foo", "", "baz"]))
+  end
+
+  def test_empty_false
+    assert_equal(%Q[foo,,baz#{$INPUT_RECORD_SEPARATOR}],
+                 generate_line(["foo", "", "baz"],
+                               quote_empty: false))
+  end
+
+  def test_empty_only_default
+    assert_equal(%Q[""#{$INPUT_RECORD_SEPARATOR}],
+                 generate_line([""]))
+  end
+
+  def test_empty_only_false
+    assert_equal(%Q[#{$INPUT_RECORD_SEPARATOR}],
+                 generate_line([""],
+                               quote_empty: false))
+  end
+
+  def test_empty_double_default
+    assert_equal(%Q["",""#{$INPUT_RECORD_SEPARATOR}],
+                 generate_line(["", ""]))
+  end
+
+  def test_empty_double_false
+    assert_equal(%Q[,#{$INPUT_RECORD_SEPARATOR}],
+                 generate_line(["", ""],
+                               quote_empty: false))
+  end
+end
+
+class TestCSVWriteQuoteEmptyGenerateLine < Test::Unit::TestCase
+  include TestCSVWriteQuoteEmpty
+  extend DifferentOFS
+
+  def generate_line(row, **kwargs)
+    CSV.generate_line(row, **kwargs)
+  end
+end
+
+class TestCSVWriteQuoteEmptyGenerate < Test::Unit::TestCase
+  include TestCSVWriteQuoteEmpty
+  extend DifferentOFS
+
+  def generate_line(row, **kwargs)
+    CSV.generate(**kwargs) do |csv|
+      csv << row
+    end
+  end
+end