Done

SmallSoftwareProject/SmallSoftwareContracts/DataModels/StorageDataModel.cs

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+using SmallSoftwareContracts.Exceptions;
+using SmallSoftwareContracts.Extensions;
+using SmallSoftwareContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SmallSoftwareContracts.DataModels;
+
+public class StorageDataModel(string id, string storageName, string address, bool isDeleted, List<StorageSoftwareDataModel> softwares) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public string StorageName { get; private set; } = storageName;
+    public string Address { get; private set; } = address;
+    public bool IsDeleted { get; private set; } = isDeleted;
+    public List<StorageSoftwareDataModel> Softwares { get; private set; } = softwares;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+        if (StorageName.IsEmpty())
+            throw new ValidationException("Field StorageName is empty");
+        if (Address.IsEmpty())
+            throw new ValidationException("Field Address is empty");
+        if ((Softwares?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include products");
+    }
+}

SmallSoftwareProject/SmallSoftwareContracts/DataModels/StorageSoftwareDataModel.cs

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+using SmallSoftwareContracts.Exceptions;
+using SmallSoftwareContracts.Extensions;
+using SmallSoftwareContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SmallSoftwareContracts.DataModels;
+
+public class StorageSoftwareDataModel(string storageId, string softwareId, int count) : IValidation
+{
+    public string StorageId { get; private set; } = storageId;
+    public string SoftwareId { get; private set; } = softwareId;
+    public int Count { get; private set; } = count;
+    public void Validate()
+    {
+        if (StorageId.IsEmpty())
+            throw new ValidationException("Field StorageId is empty");
+        if (!StorageId.IsGuid())
+            throw new ValidationException("The value in the field StorageId is not a unique identifier");
+        if (SoftwareId.IsEmpty())
+            throw new ValidationException("Field SoftwareId is empty");
+        if (!SoftwareId.IsGuid())
+            throw new ValidationException("The value in the field SoftwareId is not a unique identifier");
+        if (Count <= 0)
+            throw new ValidationException("Field Count is less than or equal to 0");
+    }
+}

SmallSoftwareProject/SmallSoftwareContracts/DataModels/SupplyDataModel.cs

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+using SmallSoftwareContracts.Exceptions;
+using SmallSoftwareContracts.Extensions;
+using SmallSoftwareContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SmallSoftwareContracts.DataModels;
+
+public class SupplyDataModel(string id, string storageId, DateTime supplyDate, List<SupplySoftwareDataModel> softwares) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public string StorageId { get; private set; } = storageId;
+    public DateTime SupplyDate { get; private set; } = supplyDate;
+
+    public List<SupplySoftwareDataModel> Softwares { get; private set; } = softwares;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+        if (StorageId.IsEmpty())
+            throw new ValidationException("Field StorageId is empty");
+        if (!StorageId.IsGuid())
+            throw new ValidationException("The value in the field StorageId is not a unique identifier");
+
+        if ((Softwares?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include products");
+    }
+}

SmallSoftwareProject/SmallSoftwareContracts/DataModels/SupplySoftwareDataModel.cs

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+using SmallSoftwareContracts.Exceptions;
+using SmallSoftwareContracts.Extensions;
+using SmallSoftwareContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SmallSoftwareContracts.DataModels;
+
+public class SupplySoftwareDataModel(string supplyId, string softwareId, int count) : IValidation
+{
+    public string SupplyId { get; private set; } = supplyId;
+    public string SoftwareId { get; private set; } = softwareId;
+    public int Count { get; private set; } = count;
+    public void Validate()
+    {
+        if (SupplyId.IsEmpty())
+            throw new ValidationException("Field SupplyId is empty");
+        if (!SupplyId.IsGuid())
+            throw new ValidationException("The value in the field SupplyId is not a unique identifier");
+        if (SoftwareId.IsEmpty())
+            throw new ValidationException("Field SoftwareId is empty");
+        if (!SoftwareId.IsGuid())
+            throw new ValidationException("The value in the field SoftwareId is not a unique identifier");
+        if (Count <= 0)
+            throw new ValidationException("Field Count is less than or equal to 0");
+    }
+}

SmallSoftwareProject/SmallSoftwareTests/DataModelsTests/StorageDataModelTests.cs

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+using SmallSoftwareContracts.DataModels;
+using SmallSoftwareContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SmallSoftwareTests.DataModelsTests;
+
+
+[TestFixture]
+internal class StorageDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var storage = CreateDataModel(null, "StorageName", "Address", false, CreateSoftwarees());
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+
+        storage = CreateDataModel(string.Empty, "StorageName", "Address", false, CreateSoftwarees());
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var storage = CreateDataModel("invalid-id", "StorageName", "Address", false, CreateSoftwarees());
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void StorageNameIsNullOrEmptyTest()
+    {
+        var storage = CreateDataModel(Guid.NewGuid().ToString(), null, "Address", false, CreateSoftwarees());
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+
+        storage = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "Address", false, CreateSoftwarees());
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AddressIsNullOrEmptyTest()
+    {
+        var storage = CreateDataModel(Guid.NewGuid().ToString(), "StorageName", null, false, CreateSoftwarees());
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+
+        storage = CreateDataModel(Guid.NewGuid().ToString(), "StorageName", string.Empty, false, CreateSoftwarees());
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SoftwaresIsNullOrEmptyTest()
+    {
+        var storage = CreateDataModel(Guid.NewGuid().ToString(), "StorageName", "Address", false, null);
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+
+        storage = CreateDataModel(Guid.NewGuid().ToString(), "StorageName", "Address", false, []);
+        Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+
+    [Test]
+    public void AllFieldsAreCorrectTest()
+    {
+        var storageId = Guid.NewGuid().ToString();
+        var storageName = "StorageName";
+        var address = "Address";
+        var isDeleted = false;
+        var softwares = CreateSoftwarees();
+
+        var storage = CreateDataModel(storageId, storageName, address, isDeleted, softwares);
+
+        Assert.That(() => storage.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(storage.Id, Is.EqualTo(storageId));
+            Assert.That(storage.StorageName, Is.EqualTo(storageName));
+            Assert.That(storage.Address, Is.EqualTo(address));
+            Assert.That(storage.IsDeleted, Is.EqualTo(isDeleted));
+            Assert.That(storage.Softwares, Is.EquivalentTo(softwares));
+        });
+    }
+
+    private static StorageDataModel CreateDataModel(string? id, string? storageName, string? address, bool isDeleted,
+        List<StorageSoftwareDataModel> softwares)
+    {
+        return new StorageDataModel(id, storageName, address, isDeleted, softwares);
+    }
+
+    private static List<StorageSoftwareDataModel> CreateSoftwarees() => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}

SmallSoftwareProject/SmallSoftwareTests/DataModelsTests/StorageSoftwareDataModelTests.cs

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+using SmallSoftwareContracts.DataModels;
+using SmallSoftwareContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SmallSoftwareTests.DataModelsTests;
+[TestFixture]
+internal class StorageSoftwareDataModelTests
+{
+    [Test]
+    public void StorageIdIsNullOrEmptyTest()
+    {
+        var storageSoftware = CreateDataModel(null, Guid.NewGuid().ToString(), 10);
+        Assert.That(() => storageSoftware.Validate(), Throws.TypeOf<ValidationException>());
+
+        storageSoftware = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 10);
+        Assert.That(() => storageSoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void StorageIdIsNotGuidTest()
+    {
+        var storageSoftware = CreateDataModel("invalid-storage-id", Guid.NewGuid().ToString(), 10);
+        Assert.That(() => storageSoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SoftwareIdIsNullOrEmptyTest()
+    {
+        var storageSoftware = CreateDataModel(Guid.NewGuid().ToString(), null, 10);
+        Assert.That(() => storageSoftware.Validate(), Throws.TypeOf<ValidationException>());
+
+        storageSoftware = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 10);
+        Assert.That(() => storageSoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SoftwareIdIsNotGuidTest()
+    {
+        var storageSoftware = CreateDataModel(Guid.NewGuid().ToString(), "invalid-software-id", 10);
+        Assert.That(() => storageSoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void CountIsLessOrEqualToZeroTest()
+    {
+        var storageSoftware = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0);
+        Assert.That(() => storageSoftware.Validate(), Throws.TypeOf<ValidationException>());
+
+        storageSoftware = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -5);
+        Assert.That(() => storageSoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsAreCorrectTest()
+    {
+        var storageId = Guid.NewGuid().ToString();
+        var softwareId = Guid.NewGuid().ToString();
+        var count = 10;
+
+        var storageSoftware = CreateDataModel(storageId, softwareId, count);
+
+        Assert.That(() => storageSoftware.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(storageSoftware.StorageId, Is.EqualTo(storageId));
+            Assert.That(storageSoftware.SoftwareId, Is.EqualTo(softwareId));
+            Assert.That(storageSoftware.Count, Is.EqualTo(count));
+        });
+    }
+
+    private static StorageSoftwareDataModel CreateDataModel(string? storageId, string? softwareId, int count)
+    {
+        return new StorageSoftwareDataModel(storageId, softwareId, count);
+    }
+}

SmallSoftwareProject/SmallSoftwareTests/DataModelsTests/SupplyDataModelTests.cs

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+using SmallSoftwareContracts.DataModels;
+using SmallSoftwareContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SmallSoftwareTests.DataModelsTests;
+
+[TestFixture]
+internal class SupplyDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var supply = CreateDataModel(null, Guid.NewGuid().ToString(), DateTime.UtcNow, new List<SupplySoftwareDataModel>());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+
+        supply = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), DateTime.UtcNow, new List<SupplySoftwareDataModel>());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var supply = CreateDataModel("invalid-id", Guid.NewGuid().ToString(), DateTime.UtcNow, new List<SupplySoftwareDataModel>());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void StorageIdIsNullOrEmptyTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), null, DateTime.UtcNow, new List<SupplySoftwareDataModel>());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+
+        supply = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, DateTime.UtcNow, new List<SupplySoftwareDataModel>());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void StorageIdIsNotGuidTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), "invalid-storage-id", DateTime.UtcNow, new List<SupplySoftwareDataModel>());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SupplyIngredientsIsEmptyTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), DateTime.UtcNow, new List<SupplySoftwareDataModel>());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsAreCorrectTest()
+    {
+        var supplyId = Guid.NewGuid().ToString();
+        var storageId = Guid.NewGuid().ToString();
+        var supplyDate = DateTime.UtcNow;
+        var supplySoftwarees = new List<SupplySoftwareDataModel>
+            {
+                new SupplySoftwareDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10)
+            };
+
+        var supply = CreateDataModel(supplyId, storageId, supplyDate, supplySoftwarees);
+
+        Assert.That(() => supply.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(supply.Id, Is.EqualTo(supplyId));
+            Assert.That(supply.StorageId, Is.EqualTo(storageId));
+            Assert.That(supply.SupplyDate, Is.EqualTo(supplyDate));
+            Assert.That(supply.Softwares, Is.EqualTo(supplySoftwarees));
+        });
+    }
+
+    private static SupplyDataModel CreateDataModel(string? id, string? storageId, DateTime supplyDate, List<SupplySoftwareDataModel> supplySoftwarees)
+    {
+        return new SupplyDataModel(id, storageId, supplyDate, supplySoftwarees);
+    }
+}

SmallSoftwareProject/SmallSoftwareTests/DataModelsTests/SupplySoftwareDataModelTests.cs

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+using SmallSoftwareContracts.DataModels;
+using SmallSoftwareContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SmallSoftwareTests.DataModelsTests;
+[TestFixture]
+public class SupplySoftwareDataModelTests
+{
+    [Test]
+    public void SupplyIdIsNullOrEmptyTest()
+    {
+        var supplySoftware = CreateDataModel(null, Guid.NewGuid().ToString(), 5);
+        Assert.That(() => supplySoftware.Validate(), Throws.TypeOf<ValidationException>());
+
+        supplySoftware = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 5);
+        Assert.That(() => supplySoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SupplyIdIsNotGuidTest()
+    {
+        var supplySoftware = CreateDataModel("invalid-id", Guid.NewGuid().ToString(), 5);
+        Assert.That(() => supplySoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SoftwareIdIsNullOrEmptyTest()
+    {
+        var supplySoftware = CreateDataModel(Guid.NewGuid().ToString(), null, 5);
+        Assert.That(() => supplySoftware.Validate(), Throws.TypeOf<ValidationException>());
+
+        supplySoftware = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 5);
+        Assert.That(() => supplySoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SoftwareIdIsNotGuidTest()
+    {
+        var supplySoftware = CreateDataModel(Guid.NewGuid().ToString(), "invalid-id", 5);
+        Assert.That(() => supplySoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void CountIsLessThanOrEqualToZeroTest()
+    {
+        var supplySoftware = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0);
+        Assert.That(() => supplySoftware.Validate(), Throws.TypeOf<ValidationException>());
+
+        supplySoftware = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -5);
+        Assert.That(() => supplySoftware.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsAreCorrectTest()
+    {
+        var supplyId = Guid.NewGuid().ToString();
+        var softwareId = Guid.NewGuid().ToString();
+        var count = 10;
+
+        var supplySoftware = CreateDataModel(supplyId, softwareId, count);
+
+        Assert.That(() => supplySoftware.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(supplySoftware.SupplyId, Is.EqualTo(supplyId));
+            Assert.That(supplySoftware.SoftwareId, Is.EqualTo(softwareId));
+            Assert.That(supplySoftware.Count, Is.EqualTo(count));
+        });
+    }
+
+    private static SupplySoftwareDataModel CreateDataModel(string storageId, string softwareId, int count)
+    {
+        return new SupplySoftwareDataModel(storageId, softwareId, count);
+    }
+}