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RepositoryTest.cs
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RepositoryTest.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using URF.Core.EF.Tests.Contexts;
using URF.Core.EF.Tests.Models;
using Xunit;
namespace URF.Core.EF.Tests
{
[Collection(nameof(NorthwindDbContext))]
public class RepositoryTest
{
private readonly List<Category> _categories;
private readonly List<Product> _products;
private readonly NorthwindDbContextFixture _fixture;
public RepositoryTest(NorthwindDbContextFixture fixture)
{
_categories = Factory.Categories();
_products = Factory.Products();
_fixture = fixture;
_fixture.Initialize(true, () =>
{
_fixture.Context.Categories.AddRange(_categories);
_fixture.Context.Products.AddRange(_products);
_fixture.Context.SaveChanges();
});
}
[Theory]
[InlineData(false)]
[InlineData(true)]
public async Task FindAsync_Should_Return_Entity(bool useKey)
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
Product product;
if (useKey)
product = await repository.FindAsync(1);
else
product = await repository.FindAsync(new object[] {1});
// Assert
Assert.Equal(_products[0].ProductId, product.ProductId);
}
[Theory]
[InlineData(false)]
[InlineData(true)]
public async Task ExistsAsync_Should_Return_True(bool useKey)
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
bool result;
if (useKey)
result = await repository.ExistsAsync(1);
else
result = await repository.ExistsAsync(new object[] {1});
// Assert
Assert.True(result);
}
[Theory]
[InlineData(false)]
[InlineData(true)]
public async Task ExistsAsync_Should_Return_False(bool useKey)
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
bool result;
if (useKey)
result = await repository.ExistsAsync(-1);
else
result = await repository.ExistsAsync(new object[] {-1});
// Assert
Assert.False(result);
}
[Theory]
[InlineData(false)]
[InlineData(true)]
public void Attach_Should_Set_Entity_State_Unchanged(bool attach)
{
// Arrange
var product = new Product
{
ProductId = 80,
ProductName = "Product 80",
UnitPrice = 40,
CategoryId = 1
};
var repository = new Repository<Product>(_fixture.Context);
// Act
if (attach)
repository.Attach(product);
// Assert
Assert.Equal(attach ? EntityState.Unchanged : EntityState.Detached, _fixture.Context.Entry(product).State);
}
[Theory]
[InlineData(false)]
[InlineData(true)]
public void Detach_Should_Set_Entity_State_Detached(bool detach)
{
// Arrange
var product = new Product
{
ProductId = 84,
ProductName = "Product 84",
UnitPrice = 40,
CategoryId = 1
};
_fixture.Context.Products.Attach(product);
var repository = new Repository<Product>(_fixture.Context);
// Act
if (detach)
repository.Detach(product);
// Assert
Assert.Equal(detach ? EntityState.Detached : EntityState.Unchanged, _fixture.Context.Entry(product).State);
}
[Theory]
[InlineData(false)]
[InlineData(true)]
public async Task DeleteAsync_Should_Set_Entity_State_Deleted(bool useKey)
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
bool result;
if (useKey)
result = await repository.DeleteAsync(1);
else
result = await repository.DeleteAsync(new object[] {1});
// Assert
Assert.True(result);
Assert.Equal(EntityState.Deleted, _fixture.Context.Entry(_products[0]).State);
}
[Fact]
public void Insert_Should_Set_Entity_State_Added()
{
// Arrange
var product = new Product
{
ProductId = 84,
ProductName = "Product 84",
UnitPrice = 40,
CategoryId = 1
};
var repository = new Repository<Product>(_fixture.Context);
// Act
repository.Insert(product);
// Assert
Assert.Equal(EntityState.Added, _fixture.Context.Entry(product).State);
}
[Fact]
public async Task LoadPropertyAsync_Should_Load_Property()
{
// Arrange
var product = new Product
{
ProductId = 80,
ProductName = "Product 80",
UnitPrice = 40,
CategoryId = 1
};
_fixture.Context.Products.Attach(product);
var repository = new Repository<Product>(_fixture.Context);
// Act
await repository.LoadPropertyAsync(product, p => p.Category);
// Assert
Assert.Same(_categories[0], product.Category);
}
[Fact]
public async Task Fluent_Api_Should_Support_Paging()
{
var repository = new Repository<Product>(_fixture.Context);
// Arrange
var expected = new[]
{
new Product {ProductId = 67, ProductName = "Laughing Lumberjack Lager", CategoryId = 1, UnitPrice = 14.00m, Discontinued = false},
new Product {ProductId = 76, ProductName = "Lakkalikööri", CategoryId = 1, UnitPrice = 18.00m, Discontinued = false},
new Product {ProductId = 43, ProductName = "Ipoh Coffee", CategoryId = 1, UnitPrice = 46.00m, Discontinued = false},
new Product {ProductId = 44, ProductName = "Gula Malacca", CategoryId = 2, UnitPrice = 19.45m, Discontinued = false},
new Product {ProductId = 24, ProductName = "Guaraná Fantástica", CategoryId = 1, UnitPrice = 4.50m, Discontinued = true},
new Product {ProductId = 6, ProductName = "Grandma's Boysenberry Spread", CategoryId = 2, UnitPrice = 25.00m, Discontinued = false},
new Product {ProductId = 15, ProductName = "Genen Shouyu", CategoryId = 2, UnitPrice = 15.50m, Discontinued = false},
new Product {ProductId = 38, ProductName = "Côte de Blaye", CategoryId = 1, UnitPrice = 263.50m, Discontinued = false},
new Product {ProductId = 5, ProductName = "Chef Anton's Gumbo Mix", CategoryId = 2, UnitPrice = 21.35m, Discontinued = true},
new Product {ProductId = 4, ProductName = "Chef Anton's Cajun Seasoning", CategoryId = 2, UnitPrice = 22.00m, Discontinued = false}
};
const int page = 2;
const int pageSize = 10;
// Act
var count = await repository
.Query()
.Where(p => p.CategoryId == 1 || p.CategoryId == 2)
.CountAsync();
// Act
var products = await repository
.Query()
.Where(p => p.CategoryId == 1 || p.CategoryId == 2)
.Include(p => p.Category)
.OrderByDescending(p => p.ProductName)
.Skip((page - 1) * pageSize)
.Take(pageSize)
.SelectAsync();
var enumerable = products as Product[] ?? products.ToArray();
const int assertionCount = 24;
// Assert
Action<Product>[] collectionAssertions = {
p => Assert.Equal(expected[0].ProductId, p.ProductId),
p => Assert.Equal(expected[1].ProductId, p.ProductId),
p => Assert.Equal(expected[2].ProductId, p.ProductId),
p => Assert.Equal(expected[3].ProductId, p.ProductId),
p => Assert.Equal(expected[4].ProductId, p.ProductId),
p => Assert.Equal(expected[5].ProductId, p.ProductId),
p => Assert.Equal(expected[6].ProductId, p.ProductId),
p => Assert.Equal(expected[7].ProductId, p.ProductId),
p => Assert.Equal(expected[8].ProductId, p.ProductId),
p => Assert.Equal(expected[9].ProductId, p.ProductId)
};
// Assert
Assert.NotEmpty(enumerable);
Assert.Equal(assertionCount, count);
Assert.Equal(pageSize, enumerable.Length);
Assert.Collection(enumerable, collectionAssertions);
// Act
var paginated = new Page<Product>(count, enumerable);
// Assert
Assert.Equal(assertionCount, paginated.Count);
Assert.Collection(paginated.Value, collectionAssertions);
}
[Fact]
public async Task Queryable_Should_Allow_Composition()
{
// Arrange
var comparer = new MyProductComparer();
var expected1 = new MyProduct {Id = 1, Name = "Chai", Price = 18.00m, Category = "Beverages"};
var expected2 = new MyProduct {Id = 2, Name = "Chang", Price = 19.00m, Category = "Beverages"};
var repository = new Repository<Product>(_fixture.Context);
// Act
var query = repository.Queryable();
var products = await query
.Take(2)
.Include(p => p.Category)
.Where(p => p.UnitPrice.CompareTo(15.00m) > 0 )
.Select(p => new MyProduct
{
Id = p.ProductId,
Name = p.ProductName,
Price = p.UnitPrice,
Category = p.Category.CategoryName
})
.ToListAsync();
// Assert
Assert.Collection(products,
p => Assert.Equal(expected1, p, comparer),
p => Assert.Equal(expected2, p, comparer));
}
[Fact]
public async Task SelectAsync_Should_Return_Entities()
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
var products = await repository.Query().SelectAsync();
var enumerable = products as Product[] ?? products.ToArray();
// Assert
Assert.Equal(77, enumerable.Length);
}
[Fact]
public async Task Queries_should_be_fired_and_forgotten()
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
var products = await repository.Query().Where(p => p.ProductId == 1).SelectAsync();
// Assert
Assert.NotNull(products);
// Act
var product = await repository.Query().SingleOrDefaultAsync(s => s.ProductId == 2);
// Assert
Assert.NotNull(product);
}
[Fact]
public async Task FirstOrDefaultAsync_Should_Return_Entity()
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
var product = await repository.Query().Where(p => p.CategoryId == 1).FirstOrDefaultAsync();
// Assert
Assert.NotNull(product);
}
[Fact]
public async Task FirstOrDefaultAsync_Should_Return_Null()
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
var product = await repository.Query().Where(p => p.CategoryId == -1).FirstOrDefaultAsync();
// Assert
Assert.Null(product);
}
[Fact]
public async Task FirstOrDefaultAsync_With_Predicate_Should_Return_Entity()
{
// Arrange
var repository = new Repository<Product>(_fixture.Context);
// Act
var product = await repository.Query().FirstOrDefaultAsync(s => s.ProductId == 1);
// Assert
Assert.NotNull(product);
}
[Fact]
public void Update_Should_Set_Entity_State_Modified()
{
// Arrange
var product = new Product
{
ProductId = 84,
ProductName = "Product 84",
UnitPrice = 40,
CategoryId = 1
};
var repository = new Repository<Product>(_fixture.Context);
// Act
repository.Update(product);
// Assert
Assert.Equal(EntityState.Modified, _fixture.Context.Entry(product).State);
}
}
}