TST: GH30999 add msg to pytest.raises in pandas/tests/window/moments (p…

…andas-dev#38804)
luckyvs1 · Jan 20, 2021 · 6b456f6 · 6b456f6
1 parent 7bb51e7
commit 6b456f6
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Showing 2 changed files with 5 additions and 4 deletions.
diff --git a/pandas/tests/window/moments/test_moments_ewm.py b/pandas/tests/window/moments/test_moments_ewm.py
@@ -218,11 +218,12 @@ def test_ewma_halflife_arg(series):
     msg = "comass, span, halflife, and alpha are mutually exclusive"
     with pytest.raises(ValueError, match=msg):
         series.ewm(span=20, halflife=50)
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match=msg):
         series.ewm(com=9.5, halflife=50)
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match=msg):
         series.ewm(com=9.5, span=20, halflife=50)
-    with pytest.raises(ValueError):
+    msg = "Must pass one of comass, span, halflife, or alpha"
+    with pytest.raises(ValueError, match=msg):
         series.ewm()
 
 

diff --git a/pandas/tests/window/test_apply.py b/pandas/tests/window/test_apply.py
@@ -44,7 +44,7 @@ def f(x):
     expected = df.iloc[2:].reindex_like(df)
     tm.assert_frame_equal(result, expected)
 
-    with pytest.raises(AttributeError):
+    with tm.external_error_raised(AttributeError):
         df.rolling(window).apply(f, raw=True)