diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
index 6f402513fd..1dfb73779b 100644
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -1201,8 +1201,6 @@ def test___contains__(self):
         self.checkequal(False, '', '__contains__', 'asdf')
 
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_subscript(self):
         self.checkequal('a', 'abc', '__getitem__', 0)
         self.checkequal('c', 'abc', '__getitem__', -1)
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index c3250ef72e..2f76a688fc 100644
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -357,8 +357,6 @@ def test_reverse_iterator(self):
         self.assertEqual(list(a), list(self.example))
         self.assertEqual(list(reversed(a)), list(iter(a))[::-1])
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_reverse_iterator_picking(self):
         orig = array.array(self.typecode, self.example)
         data = list(orig)
diff --git a/vm/src/stdlib/codecs.rs b/vm/src/stdlib/codecs.rs
index c0a091bcf8..2299cd2b7a 100644
--- a/vm/src/stdlib/codecs.rs
+++ b/vm/src/stdlib/codecs.rs
@@ -305,5 +305,32 @@ mod _codecs {
     fn utf_16_ex_decode(args: FuncArgs, vm: &VirtualMachine) -> PyResult {
         delegate_pycodecs!(utf_16_ex_decode, args, vm)
     }
-    // TODO: utf-32 functions
+    #[pyfunction]
+    fn utf_32_encode(args: FuncArgs, vm: &VirtualMachine) -> PyResult {
+        delegate_pycodecs!(utf_32_encode, args, vm)
+    }
+    #[pyfunction]
+    fn utf_32_decode(args: FuncArgs, vm: &VirtualMachine) -> PyResult {
+        delegate_pycodecs!(utf_32_decode, args, vm)
+    }
+    #[pyfunction]
+    fn utf_32_le_encode(args: FuncArgs, vm: &VirtualMachine) -> PyResult {
+        delegate_pycodecs!(utf_32_le_encode, args, vm)
+    }
+    #[pyfunction]
+    fn utf_32_le_decode(args: FuncArgs, vm: &VirtualMachine) -> PyResult {
+        delegate_pycodecs!(utf_32_le_decode, args, vm)
+    }
+    #[pyfunction]
+    fn utf_32_be_encode(args: FuncArgs, vm: &VirtualMachine) -> PyResult {
+        delegate_pycodecs!(utf_32_be_encode, args, vm)
+    }
+    #[pyfunction]
+    fn utf_32_be_decode(args: FuncArgs, vm: &VirtualMachine) -> PyResult {
+        delegate_pycodecs!(utf_32_be_decode, args, vm)
+    }
+    #[pyfunction]
+    fn utf_32_ex_decode(args: FuncArgs, vm: &VirtualMachine) -> PyResult {
+        delegate_pycodecs!(utf_32_ex_decode, args, vm)
+    }
 }