Hi :

I have to migrate unit test, but find the error in Umbraco 10

[Fact]
        public void MyCodeTest() {
            var parentAlias = "parentAlias";
            var testParentCode = new Mock<IPublishedContent>();
            var testParentCodeProperty = new Mock<IPublishedProperty>();
            var cultureCodeElement = new List<IPublishedElement>();
            testParentCodeProperty.Setup(s => s.Alias).Returns(parentAlias);
            testParentCodeProperty.Setup(s => s.GetValue(null, null)).Returns(cultureCodeElement);
            testParentCodeProperty.Setup(s => s.HasValue(null, null)).Returns(true);
            testParentCode.Setup(s => s.GetProperty(parentAlias)).Returns(testParentCodeProperty.Object);

            var testSiteNode = new Mock<IGetSiteNode>();
            testSiteNode.Setup(x => x.FromNodePath(It.IsAny<string>())).Returns(testParentCode.Object);

            var resultNode = testSiteNode.Object.FromNodePath(parentAlias);
            var result = resultNode?.Value(parentAlias) as IEnumerable<IPublishedElement>;
            result.Should().NotBeNull();
        }

This code is work for Umbraco 8, when I go to Umbraco 10 during the code var result = resultNode?.Value(parentAlias) as IEnumerable<IPublishedElement>; it throw the exception :

System.TypeInitializationException: 'The type initializer for 'Umbraco.Extensions.FriendlyPublishedContentExtensions' threw an exception.'

Inner exception :

ArgumentNullException: Value cannot be null. (Parameter 'provider')

do you have any idea?