Fixed equality method fails when given the object that doesn't support table method.

  [Bug #12422][ruby-core:75707]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59641 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 5 insertions, 1 deletions

diff --git a/lib/csv.rb b/lib/csv.rb
index 45a087ff0f..b16e817d09 100644
--- a/lib/csv.rb
+++ b/lib/csv.rb
@@ -870,7 +870,8 @@ class CSV
 
     # Returns +true+ if all rows of this table ==() +other+'s rows.
     def ==(other)
-      @table == other.table
+      return @table == other.table if other.is_a? CSV::Table
+      @table == other
     end
 
     #
diff --git a/test/csv/test_features.rb b/test/csv/test_features.rb
index 3f9359faaf..8acd744b73 100755
--- a/test/csv/test_features.rb
+++ b/test/csv/test_features.rb
@@ -374,4 +374,7 @@ class TestCSV::Features < TestCSV
     assert_equal [["line", "1", "a"], ["line", "2", "b"]], c.each.to_a
   end
 
+  def test_table_nil_equality
+    assert_nothing_raised(NoMethodError) { CSV.parse("test", headers: true) == nil }
+  end
 end