Write user service constructor tests

src/Logs.Services.Tests/Logs.Services.Tests.csproj

@@ -76,6 +76,8 @@
     <Compile Include="LogsServiceTests\GetTopLogsTests.cs" />
     <Compile Include="LogsServiceTests\GetTrainingLogByIdTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="UserServiceTests\ConstructorTests.cs" />
+    <Compile Include="UserServiceTests\GetByIdTests.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Logs.Data\Logs.Data.csproj">

src/Logs.Services.Tests/UserServiceTests/ConstructorTests.cs

@@ -0,0 +1,57 @@
+using System;
+using Logs.Data.Contracts;
+using Logs.Models;
+using Moq;
+using NUnit.Framework;
+
+namespace Logs.Services.Tests.UserServiceTests
+{
+    [TestFixture]
+    public class ConstructorTests
+    {
+        [Test]
+        public void TestConstructor_PassRepositoryNull_ShouldThrowArgumentNullException()
+        {
+            // Arrange
+            var mockedUnitOfWork = new Mock<IUnitOfWork>();
+
+            // Act, Assert
+            Assert.Throws<ArgumentNullException>(() => new UserService(null, mockedUnitOfWork.Object));
+        }
+
+        [Test]
+        public void TestConstructor_PassUnitOfWorkNull_ShouldThrowArgumentNullException()
+        {
+            // Arrange
+            var mockedRepository = new Mock<IRepository<User>>();
+
+            // Act, Assert
+            Assert.Throws<ArgumentNullException>(() => new UserService(mockedRepository.Object, null));
+        }
+
+        [Test]
+        public void TestConstructor_PassEverythingCorrectly_ShouldNotThrow()
+        {
+            // Arrange
+            var mockedRepository = new Mock<IRepository<User>>();
+            var mockedUnitOfWork = new Mock<IUnitOfWork>();
+
+            // Act, Assert
+            Assert.DoesNotThrow(() => new UserService(mockedRepository.Object, mockedUnitOfWork.Object));
+        }
+
+        [Test]
+        public void TestConstructor_PassEverythingCorrectly_ShouldInitializeCorrectly()
+        {
+            // Arrange
+            var mockedRepository = new Mock<IRepository<User>>();
+            var mockedUnitOfWork = new Mock<IUnitOfWork>();
+
+            // Act
+            var service = new UserService(mockedRepository.Object, mockedUnitOfWork.Object);
+
+            // Assert
+            Assert.IsNotNull(service);
+        }
+    }
+}