From 2e72b40739a9598f6b8cfede8510e796008de42c Mon Sep 17 00:00:00 2001
From: bowu <wubo616@gmail.com>
Date: Sat, 3 Jun 2023 21:02:06 +0800
Subject: [PATCH] Improvement: extend pytest.raises to support Exception having
 __repr__ method and initialized with kwargs parameter, except default repr.

---
 src/_pytest/_code/code.py | 5 ++++-
 testing/python/raises.py  | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/_pytest/_code/code.py b/src/_pytest/_code/code.py
index 75076b4cc..c3c9b2c49 100644
--- a/src/_pytest/_code/code.py
+++ b/src/_pytest/_code/code.py
@@ -709,7 +709,10 @@ class ExceptionInfo(Generic[E]):
         __tracebackhide__ = True
         value = str(self.value)
         if not value:
-            value = repr(self.value)
+            repr_value = repr(self.value)
+            default_repr = f"{self.type.__name__}()"
+            if repr_value != default_repr:
+                value = repr_value
         msg = f"Regex pattern did not match.\n Regex: {regexp!r}\n Input: {value!r}"
         if regexp == value:
             msg += "\n Did you mean to `re.escape()` the regex?"
diff --git a/testing/python/raises.py b/testing/python/raises.py
index 76958e79a..3dcec31eb 100644
--- a/testing/python/raises.py
+++ b/testing/python/raises.py
@@ -173,7 +173,7 @@ class TestRaises:
         if method == "function":
             pytest.raises(ValueError, t)
         elif method == "function_match":
-            pytest.raises(ValueError, t).match(r"ValueError\(\)")
+            pytest.raises(ValueError, t).match("^$")
         else:
             with pytest.raises(ValueError):
                 t()