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82 lines (75 loc) · 2.68 KB
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using NUnit.Framework;
using Python.Runtime;
namespace Python.PythonTestsRunner
{
public class PythonTestRunner
{
[OneTimeSetUp]
public void SetUp()
{
PythonEngine.Initialize();
}
[OneTimeTearDown]
public void Dispose()
{
PythonEngine.Shutdown();
}
/// <summary>
/// Selects the Python tests to be run as embedded tests.
/// </summary>
/// <returns></returns>
static IEnumerable<string[]> PythonTestCases()
{
// Add the test that you want to debug here.
yield return new[] { "test_enum", "test_enum_standard_attrs" };
yield return new[] { "test_generic", "test_missing_generic_type" };
}
/// <summary>
/// Runs a test in src/tests/*.py as an embedded test. This facilitates debugging.
/// </summary>
/// <param name="testFile">The file name without extension</param>
/// <param name="testName">The name of the test method</param>
[TestCaseSource(nameof(PythonTestCases))]
public void RunPythonTest(string testFile, string testName)
{
// Find the tests directory
string folder = typeof(PythonTestRunner).Assembly.Location;
while (Path.GetFileName(folder) != "src")
{
folder = Path.GetDirectoryName(folder);
}
folder = Path.Combine(folder, "tests");
string path = Path.Combine(folder, testFile + ".py");
if (!File.Exists(path)) throw new FileNotFoundException("Cannot find test file", path);
// We could use 'import' below, but importlib gives more helpful error messages than 'import'
// https://docs.python.org/3/library/importlib.html#importing-a-source-file-directly
// Because the Python tests sometimes have relative imports, the module name must be inside the tests package
PythonEngine.Exec($@"
import sys
import os
sys.path.append(os.path.dirname(r'{folder}'))
sys.path.append(os.path.join(r'{folder}', 'fixtures'))
import clr
clr.AddReference('Python.Test')
import tests
module_name = 'tests.{testFile}'
file_path = r'{path}'
import importlib.util
spec = importlib.util.spec_from_file_location(module_name, file_path)
module = importlib.util.module_from_spec(spec)
sys.modules[module_name] = module
try:
spec.loader.exec_module(module)
except ImportError as error:
raise ImportError(str(error) + ' when sys.path=' + os.pathsep.join(sys.path))
module.{testName}()
");
}
}
}