IDEA-CR-60026: PY-40721 PY-40723 Fix troublesome cases in bytecode parsing and make sure internal errors are printed only in debug mode

(cherry picked from commit 9444416aa25d4188bcafa47253f9c9bd7e40932e)

GitOrigin-RevId: 6d5f0a70cb34378a11341bfd68f05abe338c37d9

python/helpers/pydev/pydev_tests_python/test_bytecode_utils.py

@@ -0,0 +1,43 @@
+from __future__ import print_function
+import pytest
+from _pydevd_bundle import pydevd_bytecode_utils
+
+
+@pytest.fixture
+def inner_decorator_code():
+    def power(exponent):
+        def outer(f):
+            def inner(*args):
+                result = f(*args)
+                return exponent ** result
+            return inner
+        return outer
+    return power.__code__.co_consts[1].co_consts[1]
+
+
+@pytest.fixture
+def function_with_try_except_code():
+    def f():
+        try:
+            1 / 0
+        except ZeroDivisionError:
+            print("Can't divide by zero!")
+        else:
+            print("Everything is fine.")
+    return f.__code__
+
+
+def test_candidates_for_inner_decorator(inner_decorator_code):
+    variants = pydevd_bytecode_utils.get_smart_step_into_candidates(inner_decorator_code)
+    assert len(variants) == 2
+    assert variants[0].argval == 'f'
+    assert variants[1].argval == '__pow__'
+
+
+def test_candidates_for_function_with_try_except(function_with_try_except_code):
+    variants = pydevd_bytecode_utils.get_smart_step_into_candidates(function_with_try_except_code)
+    assert len(variants) == 3
+    assert variants[0].argval == '__div__'
+    assert variants[1].argval == 'print'
+    assert variants[2].argval == 'print'
+