ReviewRepositoryTests.cs

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using System.Collections.Generic;
using System.Linq;
using Moq;
using ScientificReport.DAL.DbContext;
using ScientificReport.DAL.Entities;
using ScientificReport.DAL.Repositories;
using Xunit;

namespace ScientificReport.Test.RepositoriesTests
{
    public class ReviewRepositoryTests
    {
        private static readonly IEnumerable<Review> TestReviews = new[]
        {
            TestData.Review1,
            TestData.Review2,
            TestData.Review3
        };

        private static Mock<ScientificReportDbContext> GetMockContext()
        {
            var mockContext = new Mock<ScientificReportDbContext>();
            mockContext.Setup(item => item.Reviews).Returns(
                MockProvider.GetMockSet(TestReviews).Object
            );
            return mockContext;
        }

        [Fact]
        public void AllTest()
        {
            var repository = new ReviewRepository(GetMockContext().Object);
            var actual = repository.All();
            Assert.Equal(TestReviews.Count(), actual.Count());
        }

        [Fact]
        public void AllWhereTest()
        {
            var mockContext = GetMockContext();
            var repository = new ReviewRepository(mockContext.Object);
            var actual = repository.AllWhere(a => a.Id == mockContext.Object.Reviews.First().Id);
            Assert.Single(actual);
        }
        
        [Fact]
        public void GetTest()
        {
            var mockContext = GetMockContext();
            var repository = new ReviewRepository(mockContext.Object);
            var expected = mockContext.Object.Reviews.First();
            var actual = repository.Get(o => o.Id == expected.Id);
            Assert.NotNull(actual);
        }
        
        [Fact]
        public void GetQueryTest()
        {
            var mockContext = GetMockContext();
            var repository = new ReviewRepository(mockContext.Object);
            var actual = repository.GetQuery();
            Assert.Equal(actual.Count(), mockContext.Object.Reviews.Count());
        }

        [Fact]
        public void GetByIdTest()
        {
            var mockContext = GetMockContext();
            var repository = new ReviewRepository(mockContext.Object);
            var expected = mockContext.Object.Reviews.First();
            var actual = repository.Get(expected.Id);
            Assert.NotNull(actual);
        }

        [Fact]
        public void CreateTest()
        {
            var mockContext = GetMockContext();
            var repository = new ReviewRepository(mockContext.Object);
            Assert.Equal(TestReviews.Count(), mockContext.Object.Reviews.Count());
            repository.Create(TestData.Review1);
            Assert.Equal(TestReviews.Count(), repository.All().Count());
        }

        [Fact]
        public void UpdateTest()
        {
            var mockContext = GetMockContext();
            var repository = new ReviewRepository(mockContext.Object);
            var item = mockContext.Object.Reviews.First();
            repository.Update(item);
            Assert.NotNull(repository.Get(item.Id));
        }
        
        [Fact]
        public void UpdateItemIsNullTest()
        {
            var mockContext = GetMockContext();
            var repository = new ReviewRepository(mockContext.Object);
            repository.Update(null);
        }

        [Fact]
        public void DeleteTest()
        {
            var mockContext = GetMockContext();
            var repository = new ReviewRepository(mockContext.Object);
            var item = mockContext.Object.Reviews.First();
            repository.Delete(item.Id);
            Assert.Null(mockContext.Object.Reviews.Find(item.Id));
        }
    }
}