From 7de7def9b59d2de6eccbfe98fc0583644bfa0969 Mon Sep 17 00:00:00 2001
From: Noko-Github <bamboo.developer@gmail.com>
Date: Sat, 25 Nov 2023 16:20:17 +0900
Subject: [PATCH] Add a test case

Add a test case to test_relational.py and a fixture empty dataframe.
---
 tests/conftest.py        | 5 +++++
 tests/test_relational.py | 5 ++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/tests/conftest.py b/tests/conftest.py
index 6ee53e7ee4..dc13dda193 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -166,6 +166,11 @@ def null_df(rng, long_df):
     return df
 
 
+@pytest.fixture
+def empty_df(long_df):
+    return long_df.drop(long_df.index)
+
+
 @pytest.fixture
 def object_df(rng, long_df):
 
diff --git a/tests/test_relational.py b/tests/test_relational.py
index 4c7ff43ee9..b8a857660f 100644
--- a/tests/test_relational.py
+++ b/tests/test_relational.py
@@ -1219,7 +1219,7 @@ def test_lineplot_smoke(
         wide_df, wide_array,
         wide_list_of_series, wide_list_of_arrays, wide_list_of_lists,
         flat_array, flat_series, flat_list,
-        long_df, null_df, object_df
+        long_df, null_df, object_df, empty_df
     ):
 
         f, ax = plt.subplots()
@@ -1302,6 +1302,9 @@ def test_lineplot_smoke(
         lineplot(x="x", y="y", hue="f", size="s", data=object_df)
         ax.clear()
 
+        lineplot(x="x", y="y", hue="a", data=empty_df)
+        ax.clear()
+
     def test_ci_deprecation(self, long_df):
 
         axs = plt.figure().subplots(2)