public void ResolveExistingFile()
        {
            FileInclusionResolver resolver = new FileInclusionResolver();

            Assert.DoesNotThrow(() => resolver.Resolve(@"..\..\Resources\basics_sch.xml"));
        }
        public void ResolveUri()
        {
            FileInclusionResolver resolver = new FileInclusionResolver();

            Assert.DoesNotThrow(() => resolver.Resolve("http://www.w3schools.com/xml/note.xml"));
        }
        public void ResolveNullHref()
        {
            FileInclusionResolver resolver = new FileInclusionResolver();

            Assert.Throws <ArgumentNullException>(() => resolver.Resolve(null));
        }