public void DiagnosticsTest1()
        {
            Diagnostic diagnostic;
            int        id;

            using (var db = new ApplicationDbContext("DefaultConnection"))
            {
                var ctrl = new MedHairController(db);
                diagnostic = new Diagnostic
                {
                    DiagnosticText         = "text",
                    CreationDate           = DateTime.Now,
                    DateOfLastConfirmation = DateTime.Now,
                    Comment = "comment",
                };

                id = ctrl.CreateDiagnostic(diagnostic);
                var diagnosticRes = ctrl.GetDiagnostic(id);

                Assert.IsNotNull(diagnosticRes);
                Assert.AreEqual("text", diagnosticRes.DiagnosticText);
                Assert.AreEqual("comment", diagnosticRes.Comment);
            }

            using (var db = new ApplicationDbContext("DefaultConnection"))
            {
                var ctrl = new MedHairController(db);
                diagnostic.DiagnosticID   = id;
                diagnostic.DiagnosticText = "text1111";


                ctrl.EditDiagnostic(diagnostic);
                var diagnosticRes = ctrl.GetDiagnostic(id);
                Assert.IsNotNull(diagnosticRes);
                Assert.AreEqual("text1111", diagnosticRes.DiagnosticText);
                Assert.AreEqual("comment", diagnosticRes.Comment);
            }

            using (var db = new ApplicationDbContext("DefaultConnection"))
            {
                var ctrl = new MedHairController(db);

                ctrl.DeleteDiagnostic(diagnostic.DiagnosticID);
                var diagnosticRes = ctrl.GetDiagnostic(id);
                Assert.IsNull(diagnosticRes);
            }
        }