public void Mains_Should_Throw_ArgumentNullException_If_ProductCategories_Is_Null()
{
IQueryable <ProductCategory> productCategories = null;
var ex = Assert.Throws <ArgumentNullException>(() => ProductCategoryExtensions.Mains(productCategories));
Assert.Equal(nameof(productCategories), ex.ParamName);
}
public void Mains_Should_Return_Only_Categories_Set_As_Main_Category()
{
IQueryable <ProductCategory> productCategories = new ProductCategory[]
{
new ProductCategory {
CategoryId = Guid.NewGuid(), ProductId = Guid.NewGuid(), IsMain = true
},
new ProductCategory {
CategoryId = Guid.NewGuid(), ProductId = Guid.NewGuid(), IsMain = true
},
new ProductCategory {
CategoryId = Guid.NewGuid(), ProductId = Guid.NewGuid(), IsMain = false
}
}.AsQueryable();
var mainCategories = ProductCategoryExtensions.Mains(productCategories).ToArray();
Assert.True(mainCategories.All(c => c.IsMain));
}