added ConcatDateColsList benchmark

Author: anmyachev

asv_bench/benchmarks/io/parsers.py

@@ -34,3 +34,19 @@ def setup(self, value, dim):
 
     def time_check_concat(self, value, dim):
         _concat_date_cols(self.object)
+
+class ConcatDateColsList(object):
+
+    params = ([1234567890, 'AAAA'], [1, 2])
+    param_names = ['value', 'dim']
+
+    def setup(self, value, dim):
+        count_elem = 1000000
+        if dim == 1:
+            self.object = ([value] * count_elem,)
+        if dim == 2:
+            self.object = ([value] * count_elem,
+                           [value] * count_elem)
+
+    def time_check_concat(self, value, dim):
+        _concat_date_cols(self.object)