[ci] Start testing on python 3.14-beta (#2731)

* [ci] Start testing on python 3.14-beta

* Remove syntax error from shared code

* Fix failing tests

---------

Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>

Author: Pierre-Sassoulas

.github/workflows/ci.yaml

@@ -81,7 +81,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.9, "3.10", "3.11", "3.12", "3.13"]
+        python-version: [3.9, "3.10", "3.11", "3.12", "3.13", "3.14-dev"]
     outputs:
       python-key: ${{ steps.generate-python-key.outputs.key }}
     steps:
@@ -139,7 +139,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.9, "3.10", "3.11", "3.12", "3.13"]
+        python-version: [3.9, "3.10", "3.11", "3.12", "3.13", "3.14-dev"]
     steps:
       - name: Set temp directory
         run: echo "TEMP=$env:USERPROFILE\AppData\Local\Temp" >> $env:GITHUB_ENV

tests/test_builder.py

@@ -850,7 +850,7 @@ def test_method_locals(self) -> None:
         """Test the 'locals' dictionary of an astroid method."""
         method = self.module["YOUPI"]["method"]
         # ListComp variables are not accessible outside
-        self.assertEqual(sorted(method.locals), ["autre", "local", "self"])
+        self.assertEqual(sorted(method.locals), ["a", "autre", "local", "self"])
 
     def test_unknown_encoding(self) -> None:
         with self.assertRaises(AstroidSyntaxError):

tests/test_nodes.py

@@ -28,7 +28,14 @@
     transforms,
     util,
 )
-from astroid.const import IS_PYPY, PY310_PLUS, PY311_PLUS, PY312_PLUS, Context
+from astroid.const import (
+    IS_PYPY,
+    PY310_PLUS,
+    PY311_PLUS,
+    PY312_PLUS,
+    PY314_PLUS,
+    Context,
+)
 from astroid.context import InferenceContext
 from astroid.exceptions import (
     AstroidBuildingError,
@@ -115,11 +122,31 @@ def test_varargs_kwargs_as_string(self) -> None:
         ast = abuilder.string_build("raise_string(*args, **kwargs)").body[0]
         self.assertEqual(ast.as_string(), "raise_string(*args, **kwargs)")
 
-    def test_module_as_string(self) -> None:
-        """Check as_string on a whole module prepared to be returned identically."""
+    @pytest.mark.skipif(PY314_PLUS, reason="return in finally is now a syntax error")
+    def test_module_as_string_pre_3_14(self) -> None:
+        """Check as_string on a whole module prepared to be returned identically for py < 3.14."""
+        self.maxDiff = None
         module = resources.build_file("data/module.py", "data.module")
         with open(resources.find("data/module.py"), encoding="utf-8") as fobj:
-            self.assertMultiLineEqual(module.as_string(), fobj.read())
+            # Ignore comments in python file
+            data_str = "\n".join(
+                [s for s in fobj.read().split("\n") if not s.lstrip().startswith("# ")]
+            )
+            self.assertMultiLineEqual(module.as_string(), data_str)
+
+    @pytest.mark.skipif(
+        not PY314_PLUS, reason="return in finally is now a syntax error"
+    )
+    def test_module_as_string(self) -> None:
+        """Check as_string on a whole module prepared to be returned identically for py > 3.14."""
+        self.maxDiff = None
+        module = resources.build_file("data/module3.14.py", "data.module3.14")
+        with open(resources.find("data/module3.14.py"), encoding="utf-8") as fobj:
+            # Ignore comments in python file
+            data_str = "\n".join(
+                [s for s in fobj.read().split("\n") if not s.lstrip().startswith("# ")]
+            )
+            self.assertMultiLineEqual(module.as_string(), data_str)
 
     def test_module2_as_string(self) -> None:
         """Check as_string on a whole module prepared to be returned identically."""

tests/testdata/python3/data/module.py

@@ -59,7 +59,9 @@ def method(self):
                 return 'hehe'
             global_access(local, val=autre)
         finally:
-            return local
+            # return in finally was previously tested here but became a syntax error
+            # in 3.14 and this file is used in 188/1464 tests
+            a = local
 
     def static_method():
         """static method test"""

tests/testdata/python3/data/module3.14.py

@@ -0,0 +1,91 @@
+"""test module for astroid
+"""
+
+__revision__ = '$Id: module.py,v 1.2 2005-11-02 11:56:54 syt Exp $'
+from astroid.nodes.node_classes import Name as NameNode
+from astroid import modutils
+from astroid.utils import *
+import os.path
+MY_DICT = {}
+
+def global_access(key, val):
+    """function test"""
+    local = 1
+    MY_DICT[key] = val
+    for i in val:
+        if i:
+            del MY_DICT[i]
+            continue
+        else:
+            break
+    else:
+        return
+
+
+class YO:
+    """hehe
+    haha"""
+    a = 1
+    
+    def __init__(self):
+        try:
+            self.yo = 1
+        except ValueError as ex:
+            pass
+        except (NameError, TypeError):
+            raise XXXError()
+        except:
+            raise
+
+
+
+class YOUPI(YO):
+    class_attr = None
+    
+    def __init__(self):
+        self.member = None
+    
+    def method(self):
+        """method
+        test"""
+        global MY_DICT
+        try:
+            MY_DICT = {}
+            local = None
+            autre = [a for (a, b) in MY_DICT if b]
+            if b in autre:
+                return
+            elif a in autre:
+                return 'hehe'
+            global_access(local, val=autre)
+        finally:
+            # return in finally was previously tested here but became a syntax error
+            # in 3.14 and is used in 188/1464 tests
+            print(local)
+    
+    def static_method():
+        """static method test"""
+        assert MY_DICT, '???'
+    static_method = staticmethod(static_method)
+    
+    def class_method(cls):
+        """class method test"""
+        exec(a, b)
+    class_method = classmethod(class_method)
+
+
+def four_args(a, b, c, d):
+    """four arguments (was nested_args)"""
+    while 1:
+        if a:
+            break
+        a += +1
+    else:
+        b += -2
+    if c:
+        d = a and (b or c)
+    else:
+        c = a and b or d
+    list(map(lambda x, y: (y, x), a))
+redirect = four_args
+