From 1faa3cd1a18db857f6aafcac3c026dfe9a7b512e Mon Sep 17 00:00:00 2001
From: Padraic Fanning <fanninpm@miamioh.edu>
Date: Thu, 22 Apr 2021 22:26:30 -0400
Subject: [PATCH 1/2] Add test_utf8source from CPython 3.8

---
 Lib/test/test_utf8source.py | 43 +++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Lib/test/test_utf8source.py

diff --git a/Lib/test/test_utf8source.py b/Lib/test/test_utf8source.py
new file mode 100644
index 000000000..97dced8a6
--- /dev/null
+++ b/Lib/test/test_utf8source.py
@@ -0,0 +1,43 @@
+# This file is marked as binary in the CVS, to prevent MacCVS from recoding it.
+
+import unittest
+
+class PEP3120Test(unittest.TestCase):
+
+    def test_pep3120(self):
+        self.assertEqual(
+            "Питон".encode("utf-8"),
+            b'\xd0\x9f\xd0\xb8\xd1\x82\xd0\xbe\xd0\xbd'
+        )
+        self.assertEqual(
+            "\П".encode("utf-8"),
+            b'\\\xd0\x9f'
+        )
+
+    def test_badsyntax(self):
+        try:
+            import test.badsyntax_pep3120
+        except SyntaxError as msg:
+            msg = str(msg).lower()
+            self.assertTrue('utf-8' in msg)
+        else:
+            self.fail("expected exception didn't occur")
+
+
+class BuiltinCompileTests(unittest.TestCase):
+
+    # Issue 3574.
+    def test_latin1(self):
+        # Allow compile() to read Latin-1 source.
+        source_code = '# coding: Latin-1\nu = "Ç"\n'.encode("Latin-1")
+        try:
+            code = compile(source_code, '<dummy>', 'exec')
+        except SyntaxError:
+            self.fail("compile() cannot handle Latin-1 source")
+        ns = {}
+        exec(code, ns)
+        self.assertEqual('Ç', ns['u'])
+
+
+if __name__ == "__main__":
+    unittest.main()

From deac676ff2463b8b140122372084650524f95e7d Mon Sep 17 00:00:00 2001
From: Padraic Fanning <fanninpm@miamioh.edu>
Date: Thu, 22 Apr 2021 22:28:24 -0400
Subject: [PATCH 2/2] Mark erroring tests

---
 Lib/test/test_utf8source.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Lib/test/test_utf8source.py b/Lib/test/test_utf8source.py
index 97dced8a6..e2f745c25 100644
--- a/Lib/test/test_utf8source.py
+++ b/Lib/test/test_utf8source.py
@@ -14,6 +14,8 @@ class PEP3120Test(unittest.TestCase):
             b'\\\xd0\x9f'
         )
 
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure # "badsyntax_pep3120.py" may make the WASM CI fail
     def test_badsyntax(self):
         try:
             import test.badsyntax_pep3120
@@ -26,6 +28,8 @@ class PEP3120Test(unittest.TestCase):
 
 class BuiltinCompileTests(unittest.TestCase):
 
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
     # Issue 3574.
     def test_latin1(self):
         # Allow compile() to read Latin-1 source.