pythonnet/src/embed_tests/TestCallbacks.cs at master · sdpython/pythonnet · GitHub

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using System;

using NUnit.Framework;

using Python.Runtime;

namespace Python.EmbeddingTest {

using Runtime = Python.Runtime.Runtime;

public class TestCallbacks {

[OneTimeSetUp]

public void SetUp() {

PythonEngine.Initialize();

}

[OneTimeTearDown]

public void Dispose() {

PythonEngine.Shutdown();

}

[Test]

public void TestNoOverloadException() {

int passed = 0;

var aFunctionThatCallsIntoPython = new Action<int>(value => passed = value);

using (Py.GIL()) {

dynamic callWith42 = PythonEngine.Eval("lambda f: f([42])");

var error = Assert.Throws<PythonException>(() => callWith42(aFunctionThatCallsIntoPython.ToPython()));

Assert.AreEqual("TypeError", error.PythonTypeName);

string expectedArgTypes = "(<class 'list'>)";

StringAssert.EndsWith(expectedArgTypes, error.Message);

}