1 files changed, 40 insertions, 0 deletions
diff --git a/test/csv/parse/test_column_separator.rb b/test/csv/parse/test_column_separator.rb
new file mode 100644
index 0000000000..d6eaa7b6de
--- /dev/null
+++ b/test/csv/parse/test_column_separator.rb
@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+# frozen_string_literal: false
+
+require_relative "../helper"
+
+class TestCSVParseColumnSeparator < Test::Unit::TestCase
+  extend DifferentOFS
+
+  def test_comma
+    assert_equal([["a", "b", nil, "d"]],
+                 CSV.parse("a,b,,d", col_sep: ","))
+  end
+
+  def test_space
+    assert_equal([["a", "b", nil, "d"]],
+                 CSV.parse("a b  d", col_sep: " "))
+  end
+
+  def test_tab
+    assert_equal([["a", "b", nil, "d"]],
+                 CSV.parse("a\tb\t\td", col_sep: "\t"))
+  end
+
+  def test_multiple_characters_include_sub_separator
+    assert_equal([["a b", nil, "d"]],
+                 CSV.parse("a b    d", col_sep: "  "))
+  end
+
+  def test_multiple_characters_leading_empty_fields
+    data = <<-CSV
+<=><=>A<=>B<=>C
+1<=>2<=>3
+    CSV
+    assert_equal([
+                   [nil, nil, "A", "B", "C"],
+                   ["1", "2", "3"],
+                 ],
+                 CSV.parse(data, col_sep: "<=>"))
+  end
+end