Removed the Requirement to Install Python and NodeJS (Now Bundled with Borealis)

Dependencies/Python/Lib/test/test_dynamic.py

@@ -0,0 +1,197 @@
+# Test the most dynamic corner cases of Python's runtime semantics.
+
+import builtins
+import sys
+import unittest
+
+from test.support import swap_item, swap_attr, is_wasi, Py_DEBUG
+
+
+class RebindBuiltinsTests(unittest.TestCase):
+
+    """Test all the ways that we can change/shadow globals/builtins."""
+
+    def configure_func(self, func, *args):
+        """Perform TestCase-specific configuration on a function before testing.
+
+        By default, this does nothing. Example usage: spinning a function so
+        that a JIT will optimize it. Subclasses should override this as needed.
+
+        Args:
+            func: function to configure.
+            *args: any arguments that should be passed to func, if calling it.
+
+        Returns:
+            Nothing. Work will be performed on func in-place.
+        """
+        pass
+
+    def test_globals_shadow_builtins(self):
+        # Modify globals() to shadow an entry in builtins.
+        def foo():
+            return len([1, 2, 3])
+        self.configure_func(foo)
+
+        self.assertEqual(foo(), 3)
+        with swap_item(globals(), "len", lambda x: 7):
+            self.assertEqual(foo(), 7)
+
+    def test_modify_builtins(self):
+        # Modify the builtins module directly.
+        def foo():
+            return len([1, 2, 3])
+        self.configure_func(foo)
+
+        self.assertEqual(foo(), 3)
+        with swap_attr(builtins, "len", lambda x: 7):
+            self.assertEqual(foo(), 7)
+
+    def test_modify_builtins_while_generator_active(self):
+        # Modify the builtins out from under a live generator.
+        def foo():
+            x = range(3)
+            yield len(x)
+            yield len(x)
+        self.configure_func(foo)
+
+        g = foo()
+        self.assertEqual(next(g), 3)
+        with swap_attr(builtins, "len", lambda x: 7):
+            self.assertEqual(next(g), 7)
+
+    def test_modify_builtins_from_leaf_function(self):
+        # Verify that modifications made by leaf functions percolate up the
+        # callstack.
+        with swap_attr(builtins, "len", len):
+            def bar():
+                builtins.len = lambda x: 4
+
+            def foo(modifier):
+                l = []
+                l.append(len(range(7)))
+                modifier()
+                l.append(len(range(7)))
+                return l
+            self.configure_func(foo, lambda: None)
+
+            self.assertEqual(foo(bar), [7, 4])
+
+    def test_cannot_change_globals_or_builtins_with_eval(self):
+        def foo():
+            return len([1, 2, 3])
+        self.configure_func(foo)
+
+        # Note that this *doesn't* change the definition of len() seen by foo().
+        builtins_dict = {"len": lambda x: 7}
+        globals_dict = {"foo": foo, "__builtins__": builtins_dict,
+                        "len": lambda x: 8}
+        self.assertEqual(eval("foo()", globals_dict), 3)
+
+        self.assertEqual(eval("foo()", {"foo": foo}), 3)
+
+    def test_cannot_change_globals_or_builtins_with_exec(self):
+        def foo():
+            return len([1, 2, 3])
+        self.configure_func(foo)
+
+        globals_dict = {"foo": foo}
+        exec("x = foo()", globals_dict)
+        self.assertEqual(globals_dict["x"], 3)
+
+        # Note that this *doesn't* change the definition of len() seen by foo().
+        builtins_dict = {"len": lambda x: 7}
+        globals_dict = {"foo": foo, "__builtins__": builtins_dict,
+                        "len": lambda x: 8}
+
+        exec("x = foo()", globals_dict)
+        self.assertEqual(globals_dict["x"], 3)
+
+    def test_cannot_replace_builtins_dict_while_active(self):
+        def foo():
+            x = range(3)
+            yield len(x)
+            yield len(x)
+        self.configure_func(foo)
+
+        g = foo()
+        self.assertEqual(next(g), 3)
+        with swap_item(globals(), "__builtins__", {"len": lambda x: 7}):
+            self.assertEqual(next(g), 3)
+
+    def test_cannot_replace_builtins_dict_between_calls(self):
+        def foo():
+            return len([1, 2, 3])
+        self.configure_func(foo)
+
+        self.assertEqual(foo(), 3)
+        with swap_item(globals(), "__builtins__", {"len": lambda x: 7}):
+            self.assertEqual(foo(), 3)
+
+    def test_eval_gives_lambda_custom_globals(self):
+        globals_dict = {"len": lambda x: 7}
+        foo = eval("lambda: len([])", globals_dict)
+        self.configure_func(foo)
+
+        self.assertEqual(foo(), 7)
+
+    @unittest.skipIf(is_wasi and Py_DEBUG, "requires too much stack")
+    def test_load_global_specialization_failure_keeps_oparg(self):
+        # https://github.com/python/cpython/issues/91625
+        class MyGlobals(dict):
+            def __missing__(self, key):
+                return int(key.removeprefix("_number_"))
+
+        # Need more than 256 variables to use EXTENDED_ARGS
+        variables = 400
+        code = "lambda: " + "+".join(f"_number_{i}" for i in range(variables))
+        sum_func = eval(code, MyGlobals())
+        expected = sum(range(variables))
+        # Warm up the function for quickening (PEP 659)
+        for _ in range(30):
+            self.assertEqual(sum_func(), expected)
+
+
+class TestTracing(unittest.TestCase):
+
+    def setUp(self):
+        self.addCleanup(sys.settrace, sys.gettrace())
+        sys.settrace(None)
+
+    def test_after_specialization(self):
+
+        def trace(frame, event, arg):
+            return trace
+
+        turn_on_trace = False
+
+        class C:
+            def __init__(self, x):
+                self.x = x
+            def __del__(self):
+                if turn_on_trace:
+                    sys.settrace(trace)
+
+        def f():
+            # LOAD_GLOBAL[_BUILTIN] immediately follows the call to C.__del__
+            C(0).x, len
+
+        def g():
+            # BINARY_SUSCR[_LIST_INT] immediately follows the call to C.__del__
+            [0][C(0).x]
+
+        def h():
+            # BINARY_OP[_ADD_INT] immediately follows the call to C.__del__
+            0 + C(0).x
+
+        for func in (f, g, h):
+            with self.subTest(func.__name__):
+                for _ in range(58):
+                    func()
+                turn_on_trace = True
+                func()
+                sys.settrace(None)
+                turn_on_trace = False
+
+
+if __name__ == "__main__":
+    unittest.main()