pythonnet/src/embed_tests/TestCallbacks.cs at v3.2.1 · pythonnet/pythonnet · GitHub

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using System;

using NUnit.Framework;

using Python.Runtime;

namespace Python.EmbeddingTest {

public class TestCallbacks {

[Test]

public void TestNoOverloadException() {

int passed = 0;

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

using (Py.GIL()) {

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

using var pyFunc = aFunctionThatCallsIntoPython.ToPython();

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

Assert.That(error.Type.Name, Is.EqualTo("TypeError"));

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

StringAssert.EndsWith(expectedArgTypes, error.Message);

error.Traceback.Dispose();

}