Add rand, ror, rsub operators in dict_items, remove test annotation

Lib/test/test_dict.py

@@ -659,8 +659,6 @@ class DictTest(unittest.TestCase):
         self.assertEqual(k1 ^ k2, {3})
         self.assertEqual(k1 ^ k3, {1,2,4})
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_dictview_set_operations_on_items(self):
         k1 = {1:1, 2:2}.items()
         k2 = {1:1, 2:2, 3:3}.items()

vm/src/builtins/dict.rs

@@ -926,6 +926,30 @@ impl PyDictItems {
         let inner = zelf.symmetric_difference(other, vm)?;
         Ok(PySet { inner })
     }
+
+    #[pymethod(name = "__rand__")]
+    #[pymethod(magic)]
+    fn and(zelf: PyRef<Self>, other: ArgIterable, vm: &VirtualMachine) -> PyResult<PySet> {
+        let zelf = Self::to_set(zelf, vm)?;
+        let inner = zelf.intersection(other, vm)?;
+        Ok(PySet { inner })
+    }
+
+    #[pymethod(name = "__ror__")]
+    #[pymethod(magic)]
+    fn or(zelf: PyRef<Self>, other: ArgIterable, vm: &VirtualMachine) -> PyResult<PySet> {
+        let zelf = Self::to_set(zelf, vm)?;
+        let inner = zelf.union(other, vm)?;
+        Ok(PySet { inner })
+    }
+
+    #[pymethod(name = "__rsub__")]
+    #[pymethod(magic)]
+    fn sub(zelf: PyRef<Self>, other: ArgIterable, vm: &VirtualMachine) -> PyResult<PySet> {
+        let zelf = Self::to_set(zelf, vm)?;
+        let inner = zelf.difference(other, vm)?;
+        Ok(PySet { inner })
+    }
 }
 
 pub(crate) fn init(context: &PyContext) {

vm/src/builtins/set.rs

@@ -126,7 +126,7 @@ impl PySetInner {
         Ok(true)
     }
 
-    fn union(&self, other: ArgIterable, vm: &VirtualMachine) -> PyResult<PySetInner> {
+    pub(super) fn union(&self, other: ArgIterable, vm: &VirtualMachine) -> PyResult<PySetInner> {
         let set = self.clone();
         for item in other.iter(vm)? {
             set.add(item?, vm)?;
@@ -135,7 +135,11 @@ impl PySetInner {
         Ok(set)
     }
 
-    fn intersection(&self, other: ArgIterable, vm: &VirtualMachine) -> PyResult<PySetInner> {
+    pub(super) fn intersection(
+        &self,
+        other: ArgIterable,
+        vm: &VirtualMachine,
+    ) -> PyResult<PySetInner> {
         let set = PySetInner::default();
         for item in other.iter(vm)? {
             let obj = item?;
@@ -146,7 +150,11 @@ impl PySetInner {
         Ok(set)
     }
 
-    fn difference(&self, other: ArgIterable, vm: &VirtualMachine) -> PyResult<PySetInner> {
+    pub(super) fn difference(
+        &self,
+        other: ArgIterable,
+        vm: &VirtualMachine,
+    ) -> PyResult<PySetInner> {
         let set = self.copy();
         for item in other.iter(vm)? {
             set.content.delete_if_exists(vm, &item?)?;