InterfaceImplementations_Always_ShouldBeInjected

gistfile1.txt

        [Test]
        public void InterfaceImplementations_Always_ShouldBeInjected()
        {
            var interfaces = _source.OfType<InterfaceDeclarationSyntax>().Select(
                x => x.Identifier.ToString()
            );
 
            var classes = _source.OfType<ClassDeclarationSyntax>();
            var implementsInterface = classes.Where(
                c => (
                    c.BaseList != null &&
                    c.BaseList.Types.Select(t => t.ToString()).Any(
                        t => interfaces.Any(i => i.Contains(t))
                    )
                )
            ).Select(i => i.Identifier.ToString()).ToList();
 
            var notInjected = _source.OfType<ObjectCreationExpressionSyntax>()
                .Where(
                    o => implementsInterface.Contains(o.Type.ToString())
                );
 
            Assert.That(notInjected.Count(), Is.EqualTo(0));
        }