public void TryGetTestExtensionShouldThrowExceptionWithNullUri()
{
testExtensionManager = new DummyTestExtensionManager(unfilteredTestExtensions, filteredTestExtensions, messageLogger);
TestPluginCacheTests.SetupMockAdditionalPathExtensions();
Assert.ThrowsException <ArgumentNullException>(() =>
{
var result = testExtensionManager.TryGetTestExtension(default(Uri));
}
);
}