Aug 9, 2021 · Jun 12, 2020
diff --git a/src/embed_tests/TestPyObject.cs b/src/embed_tests/TestPyObject.cs
            var list = PythonEngine.Eval("list");
            Assert.Throws<InvalidCastException>(() => list.AsManagedObject(typeof(int)));
        }

        [Test]
        public void UnaryMinus_ThrowsOnBadType()
        {
            dynamic list = new PyList();
            var error = Assert.Throws<PythonException>(() => list = -list);
            Assert.AreEqual("TypeError", error.Type.Name);
        }
    }
 }
diff --git a/src/runtime/pyobject.cs b/src/runtime/pyobject.cs
                    result = null;
                    return false;
            }
            Exceptions.ErrorCheck(res);
            result = CheckNone(new PyObject(res));
            return true;
        }
                    result = null;
                    return false;
            }
            Exceptions.ErrorCheck(res);
            result = CheckNone(new PyObject(res));
            return true;
        }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -71,5 +71,13 @@ public void AsManagedObjectInvalidCast()
		var list = PythonEngine.Eval("list");
		Assert.Throws<InvalidCastException>(() => list.AsManagedObject(typeof(int)));
		}

		[Test]
		public void UnaryMinus_ThrowsOnBadType()
		{
		dynamic list = new PyList();
		var error = Assert.Throws<PythonException>(() => list = -list);
		Assert.AreEqual("TypeError", error.Type.Name);
		}
		}
		}
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1398,6 +1398,7 @@ public override bool TryBinaryOperation(BinaryOperationBinder binder, object arg
		result = null;
		return false;
		}
		Exceptions.ErrorCheck(res);
		result = CheckNone(new PyObject(res));
		return true;
		}
Expand DownExpand Up		@@ -1450,6 +1451,7 @@ public override bool TryUnaryOperation(UnaryOperationBinder binder, out object r
		result = null;
		return false;
		}
		Exceptions.ErrorCheck(res);
		result = CheckNone(new PyObject(res));
		return true;
		}
Expand Down