public void TestOrderByExceptions()
{
List <ProductsList.Product> products1 = null;
Func <ProductsList.Product, string> elementSelector = x => x.Name;
Func <ProductsList.Product, int> keySelector = x => x.Ingredients.Count;
Func <int, IEnumerable <string>, KeyValuePair <int, IEnumerable <string> > > resultSelector = (IngredientsCount, ProductNames) =>
{
return(new KeyValuePair <int, IEnumerable <string> >(IngredientsCount, ProductNames));
};
var exception = Assert.Throws <ArgumentNullException>(() => LinqFunctions.OrderBy(products1,
x => keySelector(x),
Comparer <int> .Default
));
Assert.Equal("source", exception.ParamName);
}
public void TestThenBy()
{
var products = new List <ProductsList.Product>()
{
new ProductsList.Product//2 ingredients
{
ID = 1,
Name = "Dero1",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum1"
}
}
},
new ProductsList.Product//2 ingredients
{
ID = 2,
Name = "Dero2",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum5"
}
}
},
new ProductsList.Product//1 ingredient
{
ID = 3,
Name = "Sampon",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Menta"
}
}
},
new ProductsList.Product//3 ingredients
{
ID = 4,
Name = "Detergent",
Price = 11,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum1"
}, new ProductsList.Ingredient {
Name = "Parfum5"
}
}
},
};
Func <ProductsList.Product, int> keySelector1 = x => x.Ingredients.Count;
Func <ProductsList.Product, int> keySelector2 = x => x.Name.Length;
var result = LinqFunctions.OrderBy(products,
x => keySelector1(x),
Comparer <int> .Default
)
.ThenBy(
x => keySelector2(x),
Comparer <int> .Default
);
var numerator = result.GetEnumerator();
Assert.True(numerator.MoveNext());
Assert.Equal("Dero1", numerator.Current.Name);
Assert.True(numerator.MoveNext());
Assert.Equal("Dero2", numerator.Current.Name);
Assert.True(numerator.MoveNext());
Assert.Equal("Sampon", numerator.Current.Name);
Assert.True(numerator.MoveNext());
Assert.Equal("Detergent", numerator.Current.Name);
}
public void TestOrderBy()
{
var products = new List <ProductsList.Product>()
{
new ProductsList.Product//2 ingredients
{
ID = 1,
Name = "Dero",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum1"
}
}
},
new ProductsList.Product//2 ingredients
{
ID = 2,
Name = "Dero",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum5"
}
}
},
new ProductsList.Product//1 ingredient
{
ID = 3,
Name = "Sampon",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Menta"
}
}
},
new ProductsList.Product//3 ingredients
{
ID = 4,
Name = "Detergent",
Price = 11,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum1"
}, new ProductsList.Ingredient {
Name = "Parfum5"
}
}
},
};
Func <ProductsList.Product, string> elementSelector = x => x.Name;
Func <ProductsList.Product, int> keySelector = x => x.Ingredients.Count;
Func <int, IEnumerable <string>, KeyValuePair <int, IEnumerable <string> > > resultSelector = (IngredientsCount, ProductNames) =>
{
return(new KeyValuePair <int, IEnumerable <string> >(IngredientsCount, ProductNames));
};
var result = LinqFunctions.OrderBy(products,
x => keySelector(x),
Comparer <int> .Default
);
var numerator = result.GetEnumerator();
Assert.True(numerator.MoveNext());
Assert.Equal(3, numerator.Current.ID);
Assert.True(numerator.MoveNext());
Assert.Equal(1, numerator.Current.ID);
Assert.True(numerator.MoveNext());
Assert.Equal(2, numerator.Current.ID);
Assert.True(numerator.MoveNext());
Assert.Equal(4, numerator.Current.ID);
}