serhiy-storchaka · serhiy-storchaka · Aug 13, 2018 · Aug 13, 2018 · Aug 13, 2018
diff --git a/Lib/test/test_capi/test_codecs.py b/Lib/test/test_capi/test_codecs.py
diff --git a/Lib/test/test_capi/test_unicode.py b/Lib/test/test_capi/test_unicode.py
diff --git a/Misc/NEWS.d/next/Tests/2022-11-19-13-34-28.gh-issue-99593.8ZfCkj.rst b/Misc/NEWS.d/next/Tests/2022-11-19-13-34-28.gh-issue-99593.8ZfCkj.rst
@@ -0,0 +1 @@
+Cover the Unicode C API with tests.
diff --git a/Modules/_testcapi/unicode.c b/Modules/_testcapi/unicode.c
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
@@ -4144,6 +4144,7 @@ PyInit__testcapi(void)
     PyModule_AddObject(m, "ULLONG_MAX", PyLong_FromUnsignedLongLong(ULLONG_MAX));
     PyModule_AddObject(m, "PY_SSIZE_T_MAX", PyLong_FromSsize_t(PY_SSIZE_T_MAX));
     PyModule_AddObject(m, "PY_SSIZE_T_MIN", PyLong_FromSsize_t(PY_SSIZE_T_MIN));
+    PyModule_AddObject(m, "SIZEOF_WCHAR_T", PyLong_FromSsize_t(sizeof(wchar_t)));
     PyModule_AddObject(m, "SIZEOF_TIME_T", PyLong_FromSsize_t(sizeof(time_t)));
     PyModule_AddObject(m, "Py_Version", PyLong_FromUnsignedLong(Py_Version));
     Py_INCREF(&PyInstanceMethod_Type);

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
@@ -4530,6 +4530,9 @@ unicode_decode_utf8(const char *s, Py_ssize_t size,
     }
     s += ascii_decode(s, end, PyUnicode_1BYTE_DATA(u));
     if (s == end) {
+        if (consumed) {
+            *consumed = size;
+        }
         return u;
     }