LocalGovIMS_localgov-ims/src/Admin.UnitTests/Controllers/Office/Create/Get.cs
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Moq;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Reflection;
using System.Web.Mvc;
using Web.Mvc.Navigation;

namespace Admin.UnitTests.Controllers.Office.Create
{
    [TestClass]
    [ExcludeFromCodeCoverage]
    public class Get : TestBase
    {
        public Get()
        {
            SetupController();
        }

        private MethodInfo GetMethod()
        {
            return GetMethod(typeof(HttpGetAttribute), nameof(Controller.Create));
        }

        private ActionResult GetResult()
        {
            MockEditViewModelBuilder.Setup(x => x.Rebuild(It.IsAny<Models.Office.EditViewModel>())).Returns(new Models.Office.EditViewModel());

            return Controller.Create();
        }

        [TestMethod]
        public void HasCorrectNumberOfCustomAttributes()
        {
            Assert.AreEqual(2, GetMethod().CustomAttributes.Count());
        }

        [TestMethod]
        public void HasASingleNavigatablePageActionFilterAttribute()
        {
            Assert.AreEqual(1, GetMethod().CustomAttributes.Where(ca => ca.AttributeType == typeof(NavigatablePageActionFilterAttribute)).Count());
        }

        [TestMethod]
        public void NavigatablePageActionFilterAttributeHasCorrectDisplayText()
        {
            var attribute = GetMethod().CustomAttributes.Single(ca => ca.AttributeType == typeof(NavigatablePageActionFilterAttribute));

            var namedArgument = attribute.NamedArguments.Where(x => x.MemberName == "DisplayText").First();

            Assert.AreEqual("Create Office", namedArgument.TypedValue.Value);
        }

        [TestMethod]
        public void HasASingleHttpGetAttribute()
        {
            Assert.AreEqual(1, GetMethod().CustomAttributes.Where(ca => ca.AttributeType == typeof(HttpGetAttribute)).Count());
        }

        [TestMethod]
        public void ReturnsAView()
        {
            var result = GetResult();

            Assert.IsNotNull(result);
            Assert.IsInstanceOfType(result, typeof(ViewResult));
        }

        [TestMethod]
        public void ReturnsCorrectViewName()
        {
            var result = GetResult() as ViewResult;

            Assert.IsNotNull(result);
            Assert.IsTrue(string.IsNullOrEmpty(result.ViewName) || result.ViewName == "Edit");
        }

        [TestMethod]
        public void ReturnsAViewModel()
        {
            var result = GetResult() as ViewResult;

            Assert.IsNotNull(result);
            Assert.IsNotNull(result.Model);
        }

        [TestMethod]
        public void ReturnsCorrectViewModelType()
        {
            var result = GetResult() as ViewResult;

            Assert.IsNotNull(result);
            Assert.IsInstanceOfType(result.Model, typeof(Models.Office.EditViewModel));
        }
    }
}
