Handle typed and untyped strings (similar to other ABI values).

multiversx_sdk/abi/abi_test.py

@@ -91,6 +91,7 @@ def test_load_abi_with_counted_variadic():
 def test_encode_endpoint_input_parameters_artificial_contract():
     abi = Abi.load(testdata / "artificial.abi.json")
 
+    # All values untyped.
     encoded_values = abi.encode_endpoint_input_parameters(
         endpoint_name="yellow",
         values=[[42, "hello", True]]
@@ -101,6 +102,28 @@ def test_encode_endpoint_input_parameters_artificial_contract():
     assert encoded_values[1].hex() == "hello".encode().hex()
     assert encoded_values[2].hex() == "01"
 
+    # Some values typed.
+    encoded_values = abi.encode_endpoint_input_parameters(
+        endpoint_name="red",
+        values=[
+            "hello",
+            StringValue("world"),
+        ]
+    )
+
+    assert encoded_values == [b"hello", b"world"]
+
+    # All values typed.
+    encoded_values = abi.encode_endpoint_input_parameters(
+        endpoint_name="red",
+        values=[
+            StringValue("hello"),
+            StringValue("world"),
+        ]
+    )
+
+    assert encoded_values == [b"hello", b"world"]
+
 
 def test_decode_endpoint_output_parameters_artificial_contract():
     abi = Abi.load(testdata / "artificial.abi.json")
@@ -236,6 +259,8 @@ def __init__(self, to: Address, egld_amount: int, endpoint_name: str, arguments:
         ]
     )
 
+    assert encoded_values == expected_encoded_values
+
     # All values typed.
     encoded_values = abi.encode_endpoint_input_parameters(
         endpoint_name="proposeBatch",

multiversx_sdk/abi/string_value.py

@@ -29,6 +29,8 @@ def set_payload(self, value: Any):
             self.value = value.decode("utf-8")
         elif isinstance(value, str):
             self.value = value
+        elif isinstance(value, StringValue):
+            self.value = value.value
         else:
             raise ValueError(f"cannot set payload for string (should be either a string or bytes, but got: {type(value)})")
 

multiversx_sdk/abi/string_value_test.py

@@ -7,16 +7,21 @@
 
 
 def test_set_payload_and_get_payload():
-    # Simple
+    # Simple (string)
     value = StringValue()
     value.set_payload("hello")
     assert value.get_payload() == "hello"
 
-    # Simple
+    # Simple (bytes)
     value = StringValue()
     value.set_payload(b"hello")
     assert value.get_payload() == "hello"
 
+    # Simple (StringValue)
+    value = StringValue()
+    value.set_payload(StringValue("hello"))
+    assert value.get_payload() == "hello"
+
     # With errors
     with pytest.raises(ValueError, match=re.escape("cannot set payload for string (should be either a string or bytes, but got: <class 'types.SimpleNamespace'>)")):
         StringValue().set_payload(SimpleNamespace(a=1, b=2, c=3))

multiversx_sdk/testutils/testdata/artificial.abi.json

@@ -59,6 +59,21 @@
                     "type": "OperationCompletionStatus"
                 }
             ]
+        },
+        {
+            "name": "red",
+            "mutability": "mutable",
+            "inputs": [
+                {
+                    "name": "a",
+                    "type": "utf-8 string"
+                },
+                {
+                    "name": "b",
+                    "type": "utf-8 string"
+                }
+            ],
+            "outputs": []
         }
     ],
     "types": {