TST: insert 'match' to bare pytest raises in pandas/tests/tseries/offsets/test_ticks.py

Author: Rajat Bishnoi

pandas/tests/tseries/offsets/test_ticks.py

@@ -2,6 +2,7 @@
 Tests for offsets.Tick and subclasses
 """
 from datetime import datetime, timedelta
+import operator
 
 from hypothesis import assume, example, given, settings, strategies as st
 import numpy as np
@@ -266,10 +267,15 @@ def test_tick_rdiv(cls):
     off = cls(10)
     delta = off.delta
     td64 = delta.to_timedelta64()
+    instance__type = ".".join([cls.__module__, cls.__name__])
+    msg = (
+        "unsupported operand type\\(s\\) for \\/: 'int'|'float' and "
+        f"'{instance__type}'"
+    )
 
-    with pytest.raises(TypeError):
+    with pytest.raises(TypeError, match=msg):
         2 / off
-    with pytest.raises(TypeError):
+    with pytest.raises(TypeError, match=msg):
         2.0 / off
 
     assert (td64 * 2.5) / off == 2.5
@@ -319,26 +325,32 @@ def test_compare_ticks(cls):
     assert cls(3) != cls(4)
 
 
-@pytest.mark.parametrize("cls", tick_classes)
-def test_compare_ticks_to_strs(cls):
+@pytest.mark.parametrize(
+    "cls, left, right, comparison",
+    [
+        (cls, left, right, comparison)
+        for cls in tick_classes
+        for left, right in (("infer", cls(19)), (cls(19), "infer"))
+        for comparison in (operator.lt, operator.le, operator.gt, operator.ge)
+    ],
+)
+def test_compare_ticks_to_strs(cls, left, right, comparison):
     # GH#23524
     off = cls(19)
-
     # These tests should work with any strings, but we particularly are
     #  interested in "infer" as that comparison is convenient to make in
     #  Datetime/Timedelta Array/Index constructors
     assert not off == "infer"
     assert not "foo" == off
 
-    for left, right in [("infer", off), (off, "infer")]:
-        with pytest.raises(TypeError):
-            left < right
-        with pytest.raises(TypeError):
-            left <= right
-        with pytest.raises(TypeError):
-            left > right
-        with pytest.raises(TypeError):
-            left >= right
+    instance_type = ".".join([cls.__module__, cls.__name__])
+    msg = (
+        "'<'|'<='|'>'|'>=' not supported between instances of "
+        f"'str' and '{instance_type}'|'{instance_type}' and 'str'"
+    )
+
+    with pytest.raises(TypeError, match=msg):
+        comparison(left, right)
 
 
 @pytest.mark.parametrize("cls", tick_classes)