From 18baf89818c1ff65b41cd220f1c4bc5b672cfa86 Mon Sep 17 00:00:00 2001
From: Akul Agrawal <31360523+akulagrawal@users.noreply.github.com>
Date: Tue, 6 Nov 2018 00:16:51 +0530
Subject: [PATCH] Add a base test

Add base test for Series[ExtensionArray].sort_values with sort=False
Addresses #23074
---
 pandas/tests/extension/base/methods.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pandas/tests/extension/base/methods.py b/pandas/tests/extension/base/methods.py
index 60de5d4db03d9..9adfb266f0bcf 100644
--- a/pandas/tests/extension/base/methods.py
+++ b/pandas/tests/extension/base/methods.py
@@ -24,6 +24,12 @@ def test_value_counts(self, all_data, dropna):
 
         self.assert_series_equal(result, expected)
 
+    def test_value_counts_no_sort(self, data_for_grouping):
+        data = data_for_grouping.take([0, 7, 7, 7, 0, 4])
+        result = pd.Series(data).value_counts(sort=False)
+        expected = pd.Series([1, 2, 3], data_for_grouping.take([4, 0, 7]))
+        self.assert_series_equal(result, expected)
+
     def test_count(self, data_missing):
         df = pd.DataFrame({"A": data_missing})
         result = df.count(axis='columns')