[unbalanced-tuple-unpacking] Add a regression tests for pylint-dev#7710

doc/whatsnew/fragments/7710.bugfix

@@ -0,0 +1,4 @@
+``sys.argv`` is now always correctly considered as impossible to infer (instead of
+using the actual values given to pylint).
+
+Closes #7710

tests/functional/u/unbalanced_tuple_unpacking.py

@@ -1,5 +1,7 @@
 """Check possible unbalanced tuple unpacking """
 from __future__ import absolute_import
+
+import sys
 from typing import NamedTuple
 from functional.u.unpacking.unpacking import unpack
 
@@ -160,3 +162,8 @@ def my_function(mystring):
 
 # https://github.com/pylint-dev/pylint/issues/5998
 x, y, z = (1, 2)  # [unbalanced-tuple-unpacking]
+
+# https://github.com/pylint-dev/pylint/issues/7710
+# Using a lot of args, so we have a high probability to still trigger the problem if
+# we add arguments to our unittest command later
+(p, q, r, s, t, u, v, w, x, y, z) = sys.argv

tests/functional/u/unbalanced_tuple_unpacking.txt

@@ -1,9 +1,9 @@
-unbalanced-tuple-unpacking:11:4:11:27:do_stuff:"Possible unbalanced tuple unpacking with sequence '(1, 2, 3)': left side has 2 labels, right side has 3 values":INFERENCE
-unbalanced-tuple-unpacking:17:4:17:29:do_stuff1:"Possible unbalanced tuple unpacking with sequence '[1, 2, 3]': left side has 2 labels, right side has 3 values":INFERENCE
-unbalanced-tuple-unpacking:23:4:23:29:do_stuff2:"Possible unbalanced tuple unpacking with sequence '(1, 2, 3)': left side has 2 labels, right side has 3 values":INFERENCE
-unbalanced-tuple-unpacking:82:4:82:28:do_stuff9:"Possible unbalanced tuple unpacking with sequence defined at line 7 of functional.u.unpacking.unpacking: left side has 2 labels, right side has 3 values":INFERENCE
-unbalanced-tuple-unpacking:96:8:96:33:UnbalancedUnpacking.test:"Possible unbalanced tuple unpacking with sequence defined at line 7 of functional.u.unpacking.unpacking: left side has 2 labels, right side has 3 values":INFERENCE
-unbalanced-tuple-unpacking:140:8:140:43:MyClass.sum_unpack_3_into_4:"Possible unbalanced tuple unpacking with sequence defined at line 128: left side has 4 labels, right side has 3 values":INFERENCE
-unbalanced-tuple-unpacking:145:8:145:28:MyClass.sum_unpack_3_into_2:"Possible unbalanced tuple unpacking with sequence defined at line 128: left side has 2 labels, right side has 3 values":INFERENCE
-unbalanced-tuple-unpacking:157:0:157:24::"Possible unbalanced tuple unpacking with sequence defined at line 151: left side has 2 labels, right side has 0 values":INFERENCE
-unbalanced-tuple-unpacking:162:0:162:16::"Possible unbalanced tuple unpacking with sequence '(1, 2)': left side has 3 labels, right side has 2 values":INFERENCE
+unbalanced-tuple-unpacking:13:4:13:27:do_stuff:"Possible unbalanced tuple unpacking with sequence '(1, 2, 3)': left side has 2 labels, right side has 3 values":INFERENCE
+unbalanced-tuple-unpacking:19:4:19:29:do_stuff1:"Possible unbalanced tuple unpacking with sequence '[1, 2, 3]': left side has 2 labels, right side has 3 values":INFERENCE
+unbalanced-tuple-unpacking:25:4:25:29:do_stuff2:"Possible unbalanced tuple unpacking with sequence '(1, 2, 3)': left side has 2 labels, right side has 3 values":INFERENCE
+unbalanced-tuple-unpacking:84:4:84:28:do_stuff9:"Possible unbalanced tuple unpacking with sequence defined at line 7 of functional.u.unpacking.unpacking: left side has 2 labels, right side has 3 values":INFERENCE
+unbalanced-tuple-unpacking:98:8:98:33:UnbalancedUnpacking.test:"Possible unbalanced tuple unpacking with sequence defined at line 7 of functional.u.unpacking.unpacking: left side has 2 labels, right side has 3 values":INFERENCE
+unbalanced-tuple-unpacking:142:8:142:43:MyClass.sum_unpack_3_into_4:"Possible unbalanced tuple unpacking with sequence defined at line 130: left side has 4 labels, right side has 3 values":INFERENCE
+unbalanced-tuple-unpacking:147:8:147:28:MyClass.sum_unpack_3_into_2:"Possible unbalanced tuple unpacking with sequence defined at line 130: left side has 2 labels, right side has 3 values":INFERENCE
+unbalanced-tuple-unpacking:159:0:159:24::"Possible unbalanced tuple unpacking with sequence defined at line 153: left side has 2 labels, right side has 0 values":INFERENCE
+unbalanced-tuple-unpacking:164:0:164:16::"Possible unbalanced tuple unpacking with sequence '(1, 2)': left side has 3 labels, right side has 2 values":INFERENCE