From abb5d4ad7795b81b572bbb5c7fd08254e0beebb4 Mon Sep 17 00:00:00 2001
From: AttAditya <attachment.aditya@gmail.com>
Date: Tue, 19 May 2026 22:22:40 +0530
Subject: [PATCH 1/2] fix: Callable Matching Issue

---
 langex/utils/matcher.py             |  2 +-
 tests/functions/test_validations.py | 90 +++++++++++++++++++++++++++++
 2 files changed, 91 insertions(+), 1 deletion(-)
 create mode 100644 tests/functions/test_validations.py

diff --git a/langex/utils/matcher.py b/langex/utils/matcher.py
index 2bb5069..dcd4cc7 100644
--- a/langex/utils/matcher.py
+++ b/langex/utils/matcher.py
@@ -41,7 +41,7 @@ def handle_callable(
 ) -> None:
   if result.evaluated(): return
   if args.arg_type != callable: return
-  return callable(args.received_arg)
+  result.evaluate(callable(args.received_arg))
 
 def handle_langex_class(
   result: _MatchResult, args: _MatchArgs
diff --git a/tests/functions/test_validations.py b/tests/functions/test_validations.py
new file mode 100644
index 0000000..d133f7e
--- /dev/null
+++ b/tests/functions/test_validations.py
@@ -0,0 +1,90 @@
+from langex.core.errors import ValidationError
+from langex.core.functions import args_required, returns
+from langex.core.testing import discover_test, expects
+
+@args_required(int)
+def func(arg):
+  return 0
+
+@args_required(str)
+def func2(arg):
+  return 0
+
+@args_required(float)
+def func3(arg):
+  return 0
+
+@args_required(bool)
+def func4(arg):
+  return 0
+
+@args_required(callable)
+def func5(arg):
+  return 0
+
+@returns(int)
+def func6():
+  return 0
+
+@returns(str)
+def func7():
+  return "0"
+
+@returns(float)
+def func8():
+  return 0.0
+
+@returns(bool)
+def func9():
+  return False
+
+@returns(callable)
+def func10():
+  return lambda: None
+
+@returns(int)
+def func11():
+  return "0"
+
+@returns(str)
+def func12():
+  return 0
+
+@returns(float)
+def func13():
+  return "0"
+
+@returns(bool)
+def func14():
+  return "0"
+
+@returns(callable)
+def func15():
+  return "0"
+
+@discover_test
+def test_arg_validations():
+  (lambda: func(1)            ) @expects (0)
+  (lambda: func2("1")         ) @expects (0)
+  (lambda: func3(0.0)         ) @expects (0)
+  (lambda: func4(True)        ) @expects (0)
+  (lambda: func5(lambda: None)) @expects (0)
+  (lambda: func("1")          ) @expects (ValidationError)
+  (lambda: func2(1)           ) @expects (ValidationError)
+  (lambda: func3(0)           ) @expects (ValidationError)
+  (lambda: func4(1)           ) @expects (ValidationError)
+  (lambda: func5(1)           ) @expects (ValidationError)
+
+@discover_test
+def test_return_validations():
+  (lambda: func6()           ) @expects (0)
+  (lambda: func7()           ) @expects ("0")
+  (lambda: func8()           ) @expects (0.0)
+  (lambda: func9()           ) @expects (False)
+  (lambda: callable(func10())) @expects (True)
+  (lambda: func11()          ) @expects (ValidationError)
+  (lambda: func12()          ) @expects (ValidationError)
+  (lambda: func13()          ) @expects (ValidationError)
+  (lambda: func14()          ) @expects (ValidationError)
+  (lambda: func15()          ) @expects (ValidationError)
+

From ebb9e46c480ab6323ebde4b64461487a2b22e486 Mon Sep 17 00:00:00 2001
From: AttAditya <attachment.aditya@gmail.com>
Date: Tue, 19 May 2026 22:24:40 +0530
Subject: [PATCH 2/2] bump: v0.4.5

---
 pyproject.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyproject.toml b/pyproject.toml
index 7dc705b..dcfd789 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "langex"
-version = "0.4.4"
+version = "0.4.5"
 description = "Runtime language extensions and validation tools for Python"
 readme = "README.md"
 license = { file = "LICENSE" }