public void The_same_Id_exists_only_once()
{
//Arrange
var datastore = new InMemoryDataStore <IData>();
var id = 42;
var item1 = new Mock <IData>();
item1.SetupGet(fake => fake.Id).Returns(id);
var item2 = new Mock <IData>();
item2.SetupGet(fake => fake.Id).Returns(id);
var items = new[]
{
item1.Object,
item2.Object
};
//Act
datastore.AddOrUpdateAsync(items).Wait();
var retrieved = datastore.GetAllAsync().Result;
//Assert
Assert.AreEqual(1, retrieved.Count(item => item.Id == id));
}
public void The_same_item_is_not_added_twice()
{
//Arrange
var datastore = new InMemoryDataStore <IData>();
var items = new[]
{
new Mock <IData>().Object
};
//Act
datastore.AddOrUpdateAsync(items).Wait();
var countAfterFirstAdd = datastore.GetAllAsync().Result.Count();
datastore.AddOrUpdateAsync(items).Wait();
var countAfterSecondAdd = datastore.GetAllAsync().Result.Count();
//Assert
Assert.AreEqual(countAfterFirstAdd, countAfterSecondAdd);
}
public void Adding_the_same_Id_again_updates_exising_item()
{
//Arrange
var datastore = new InMemoryDataStore <IData>();
var id = 42;
var item1 = new Mock <IData>();
item1.SetupGet(fake => fake.Id).Returns(id);
var item2 = new Mock <IData>();
item2.SetupGet(fake => fake.Id).Returns(id);
//Act
datastore.AddOrUpdateAsync(new[] { item1.Object }).Wait();
datastore.AddOrUpdateAsync(new[] { item2.Object }).Wait();
var retrieved = datastore.GetAllAsync().Result;
//Assert
Assert.AreEqual(item2.Object, retrieved.Single(item => item.Id == id));
}
public void After_adding_items_store_is_no_longer_emtpy()
{
//Arrange
var datastore = new InMemoryDataStore <IData>();
var items = new[]
{
new Mock <IData>().Object
};
//Act
datastore.AddOrUpdateAsync(items).Wait();
//Assert
Assert.IsFalse(datastore.IsEmpty);
}
public void Added_items_can_be_retrieved()
{
//Arrange
var datastore = new InMemoryDataStore <IData>();
var items = new[]
{
new Mock <IData>().Object
};
//Act
datastore.AddOrUpdateAsync(items).Wait();
var retrieved = datastore.GetAllAsync().Result;
//Assert
Assert.AreEqual(items.Single(), retrieved.Single());
}
public void Trying_to_set_an_item_with_id_that_differs_from_supplied_id_throws_InvalidOperationException()
{
//Arrange
var datastore = new InMemoryDataStore <IData>();
var id = 42;
var item1 = new Mock <IData>();
item1.SetupGet(fake => fake.Id).Returns(id);
datastore.AddOrUpdateAsync(new[] { item1.Object }).Wait(); //first, the id must exist
var item2 = new Mock <IData>();
item2.SetupGet(fake => fake.Id).Returns(314);
//Act &&
//Assert
Assert.ThrowsExceptionAsync <InvalidOperationException>(() => datastore.UpdateAsync(id, item2.Object)).Wait();
}
