[3.7] bpo-23420: Verify the value of '-s' when execute the CLI of cProfile (GH-9925) (GH-9926)

[3.7] [bpo-23420](https://bugs.python.org/issue23420): Verify the value of '-s' when execute the CLI of cProfile (GH-9925)

Verify the value for the parameter '-s' of the cProfile CLI. Patch by Robert
Kuska.

Co-authored-by: Robert Kuska <rkuska@gmail.com>
(cherry picked from commit fcd5e84a51)





https://bugs.python.org/issue23420

Lib/cProfile.py

@@ -124,6 +124,7 @@ def main():
     import os
     import sys
     import runpy
+    import pstats
     from optparse import OptionParser
     usage = "cProfile.py [-o output_file_path] [-s sort] [-m module | scriptfile] [arg] ..."
     parser = OptionParser(usage=usage)
@@ -132,7 +133,8 @@ def main():
         help="Save stats to <outfile>", default=None)
     parser.add_option('-s', '--sort', dest="sort",
         help="Sort order when printing to stdout, based on pstats.Stats class",
-        default=-1)
+        default=-1,
+        choices=sorted(pstats.Stats.sort_arg_dict_default))
     parser.add_option('-m', dest="module", action="store_true",
         help="Profile a library module", default=False)
 

Lib/test/test_cprofile.py

@@ -2,6 +2,7 @@
 
 import sys
 from test.support import run_unittest, TESTFN, unlink
+import unittest
 
 # rip off all interesting stuff from test_profile
 import cProfile
@@ -50,8 +51,14 @@ class CProfileTest(ProfileTest):
         assert_python_ok('-m', 'cProfile', '-m', 'timeit', '-n', '1')
 
 
+class TestCommandLine(unittest.TestCase):
+    def test_sort(self):
+        rc, out, err = assert_python_failure('-m', 'cProfile', '-s', 'demo')
+        self.assertGreater(rc, 0)
+        self.assertIn(b"option -s: invalid choice: 'demo'", err)
+
 def test_main():
-    run_unittest(CProfileTest)
+    run_unittest(CProfileTest, TestCommandLine)
 
 def main():
     if '-r' not in sys.argv:

Misc/NEWS.d/next/Library/2018-10-17-11-00-00.bpo-23420.Lq74Uu.rst

@@ -0,0 +1,2 @@
+Verify the value for the parameter '-s' of the cProfile CLI. Patch by Robert
+Kuska