improve json test coverage (GH-154123)

https://github.com/python/cpython/commit/ee1e48ebd8194cd5984714021c4df85dbb93c6df
commit: ee1e48ebd8194cd5984714021c4df85dbb93c6df
branch: main
author: David <[email protected]>
committer: encukou <[email protected]>
date: 2026-07-19T13:19:00Z
summary:

improve json test coverage (GH-154123)

Add test that covers the except block on line 106 of decoder.py

files:
M Lib/test/test_json/test_decode.py

diff --git a/Lib/test/test_json/test_decode.py b/Lib/test/test_json/test_decode.py
index 6d05ef8f8eb091..33aeefa92f282a 100644
--- a/Lib/test/test_json/test_decode.py
+++ b/Lib/test/test_json/test_decode.py
@@ -149,6 +149,10 @@ def test_negative_index(self):
         d = self.json.JSONDecoder()
         self.assertRaises(ValueError, d.raw_decode, 'a'*42, -50000)
 
+    def test_unterminated_string(self):
+        d = self.json.JSONDecoder()
+        self.assertRaises(self.JSONDecodeError, d.raw_decode, '"\\')
+
     def test_limit_int(self):
         maxdigits = 5000
         with support.adjust_int_max_str_digits(maxdigits):

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