public void TestDistinctExceptions()
{
List <ProductsList.Product> products = null;
var distinctComparer = new ProductListComparer();
var exception = Assert.Throws <ArgumentNullException>(() => LinqFunctions.Distinct(products, distinctComparer));
Assert.Equal("source", exception.ParamName);
}
public void TestDistinct()
{
var products = new List <ProductsList.Product>()
{
new ProductsList.Product//default
{
ID = 2,
Name = "Detergent",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum1"
}
}
},
new ProductsList.Product//same as default
{
ID = 2,
Name = "Detergent",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum1"
}
}
},
new ProductsList.Product//totally different
{
ID = 6,
Name = "Sampon",
Price = 10,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Menta"
}, new ProductsList.Ingredient {
Name = "Parfum3"
}
}
},
new ProductsList.Product//different price
{
ID = 2,
Name = "Detergent",
Price = 11,
Ingredients = new List <ProductsList.Ingredient> {
new ProductsList.Ingredient {
Name = "Lamaie"
}, new ProductsList.Ingredient {
Name = "Parfum1"
}
}
},
};
var distinctEqualityComparer = new ProductListComparer();
var result = LinqFunctions.Distinct(products, distinctEqualityComparer);
Assert.Equal(3, result.Count());
}