public void TestJoinExceptions()
{
var products = new ProductsList().GetProducts();
List <ProductsList.Ingredient> newIngredients = null;
Func <ProductsList.Product, int> outerFunc = (product) => product.ID;
Func <ProductsList.Ingredient, int> innerFunc = (ingredient) => ingredient.IngredientID;
Func <ProductsList.Product, ProductsList.Ingredient, KeyValuePair <string, string> > selector = (product, ingredient) =>
{
{
return(new KeyValuePair <string, string>(product.Name, ingredient.Name));
}
};
var result = LinqFunctions.Join(products, newIngredients,
product => outerFunc(product), newIngredient => innerFunc(newIngredient),
(product, newIngredient) =>
selector(product, newIngredient));
var numerator = result.GetEnumerator();
var exception = Assert.Throws <ArgumentNullException>(() => numerator.MoveNext());
Assert.Equal("source", exception.ParamName);
}
public void TestJoin()
{
var products = new ProductsList().GetProducts();
var newIngredients = new List <ProductsList.Ingredient>()
{
new ProductsList.Ingredient
{
IngredientID = 2, Name = "Rose1"
},
new ProductsList.Ingredient
{
IngredientID = 3, Name = "Rose2"
},
new ProductsList.Ingredient
{
IngredientID = 6, Name = "Rose3"
},
};
Func <ProductsList.Product, int> outerFunc = (product) => product.ID;
Func <ProductsList.Ingredient, int> innerFunc = (ingredient) => ingredient.IngredientID;
Func <ProductsList.Product, ProductsList.Ingredient, KeyValuePair <string, string> > selector = (product, ingredient) =>
{
{
return(new KeyValuePair <string, string>(product.Name, ingredient.Name));
}
};
var result = LinqFunctions.Join(products, newIngredients,
product => outerFunc(product), newIngredient => innerFunc(newIngredient),
(product, newIngredient) =>
selector(product, newIngredient));
var cont1 = new KeyValuePair <string, string>("Detergent", "Rose1");
var cont2 = new KeyValuePair <string, string>("Sapun", "Rose2");
var notCont = new KeyValuePair <string, string>("Sapun", "Rose3");
Assert.Contains(cont1, result);
Assert.Contains(cont2, result);
Assert.DoesNotContain(notCont, result);
}