BrightstarDB.Tests.EntityFramework.LinqTests.TestLinqFirstOrDefault C# (CSharp) Метод

        public void TestLinqFirstOrDefault()
        {
            var connectionString = GetConnectionString("TestLinqFirstOrDefault");
            var context = new MyEntityContext(connectionString);
            var pe = context.Persons.Create();
            pe.Name = "Eddie";
            var pb = context.Persons.Create();
            pb.Name = "Bill";
            var pf = context.Persons.Create();
            pf.Name = "Freddie";
            var pd = context.Persons.Create();
            pd.Name = "Dennis";
            var pc = context.Persons.Create();
            pc.Name = "Carole";
            var pa = context.Persons.Create();
            pa.Name = "Annie";

            context.SaveChanges();
            Assert.AreEqual(6, context.Persons.Count());


            var first = context.Persons.Where(p => p.Name.Equals("Annie")).FirstOrDefault();
            Assert.IsNotNull(first);
            Assert.AreEqual("Annie", first.Name);

            var notfound = context.Persons.Where(p => p.Name.Equals("Jo")).FirstOrDefault();
            Assert.IsNull(notfound);
        }