GrantServiceTests.cs

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using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using Microsoft.EntityFrameworkCore;
using Moq;
using ScientificReport.BLL.Services;
using ScientificReport.DAL.DbContext;
using ScientificReport.DAL.Entities;
using ScientificReport.DAL.Entities.UserProfile;
using ScientificReport.DTO.Models.Grant;
using Xunit;

namespace ScientificReport.Test.ServicesTests
{
    public class GrantServiceTests
    {
        private readonly Mock<DbSet<Grant>> _mockDbSet = MockProvider.GetMockSet(GetTestData().AsQueryable());

        private static IEnumerable<Grant> GetTestData()
        {
            TestData.Grant1.UserProfilesGrants = new List<UserProfilesGrants>
            {
                new UserProfilesGrants
                {
                    UserProfile = TestData.User1,
                    Grant = TestData.Grant1,
                }
            };
            TestData.Grant2.UserProfilesGrants = new List<UserProfilesGrants>
            {
                new UserProfilesGrants
                {
                    UserProfile = TestData.User1,
                    Grant = TestData.Grant2,
                }
            };
            return new[]
            {
                TestData.Grant1,
                TestData.Grant2
            };
        }

        private Mock<ScientificReportDbContext> GetMockContext()
        {
            var mockContext = new Mock<ScientificReportDbContext>();
            mockContext.Setup(item => item.Grants).Returns(_mockDbSet.Object);
            
            var userProfileSet = MockProvider.GetMockSet(new []{TestData.User1}.AsQueryable());
            var departmentSet = MockProvider.GetMockSet(new []{TestData.Department1}.AsQueryable());
            
            mockContext.Setup(item => item.UserProfiles).Returns(userProfileSet.Object);
            mockContext.Setup(item => item.Departments).Returns(departmentSet.Object);
            
            return mockContext;
        }

        [Fact]
        public void GetAllTest()
        {
            var list = GetTestData().AsQueryable();

            var mockContext = new Mock<ScientificReportDbContext>();
            mockContext.Setup(item => item.Grants).Returns(MockProvider.GetMockSet(list).Object);
            var service = new GrantService(mockContext.Object);

            var actual = service.GetAll();

            Assert.Equal(list.Count(), actual.Count());
        }

        [Fact]
        public void GetAllWhereTest()
        {
            var service = new GrantService(GetMockContext().Object);
            var actual = service.GetAllWhere(u => u.Id.Equals(TestData.Grant1.Id));
            Assert.Single(actual);
        }

        [Fact]
        public void GetByIdTest()
        {
            var expected = GetTestData().First();
            var service = new GrantService(GetMockContext().Object);

            var actual = service.GetById(expected.Id);

            Assert.NotNull(actual);
            Assert.Equal(expected.Id, actual.Id);
        }

        [Fact]
        public void CreateItemTest()
        {
            var service = new GrantService(GetMockContext().Object);

            var expected = TestData.Grant3;
            service.CreateItem(new GrantModel(expected));

            _mockDbSet.Verify(m => m.Add(It.IsAny<Grant>()), Times.Once);
        }

        [Fact]
        public void UpdateItemTest()
        {
            var service = new GrantService(GetMockContext().Object);

            var expected = GetTestData().First();
            service.UpdateItem(new GrantEditModel(expected));

            _mockDbSet.Verify(m => m.Update(expected), Times.Once);
        }

        [Fact]
        public void DeleteItemTest()
        {
            var mockContext = GetMockContext();
            var service = new GrantService(mockContext.Object);

            var item = mockContext.Object.Grants.First();

            Assert.True(service.Exists(item.Id));

            service.DeleteById(item.Id);

            Assert.False(service.Exists(item.Id));
        }

        [Fact]
        public void ExistsTest()
        {
            var service = new GrantService(GetMockContext().Object);

            var item = GetTestData().First();
            var exists = service.Exists(item.Id);

            Assert.True(exists);
        }

        [Fact]
        public void DoesNotExistTest()
        {
            var service = new GrantService(GetMockContext().Object);

            var item = TestData.Grant3;
            var exists = service.Exists(item.Id);

            Assert.False(exists);
        }
    }
}