public MockDbSet()
{
_data = new ObservableCollection <TEntity>();
_query = _data.AsQueryable();
_queryProvier = new MockDbSetAsyncQueryProvider <TEntity>(_query.Provider);
_asyncEnumerator = new MockDbSetAsyncEnumerator <TEntity>(_data.GetEnumerator());
}
public void Ctor_WhenEnumeratorPassedIn_MockAsyncEnumeratorCreated()
{
// Arrange
var mockEnumerator = Substitute.For <IEnumerator <HeroEntity> >();
// Act
var asyncEnumerator = new MockDbSetAsyncEnumerator <HeroEntity>(mockEnumerator);
// Assert
Assert.IsNotNull(asyncEnumerator);
}
internal MockDbSetAsyncEnumerable(Expression expression)
: base(expression)
{
if (expression == null)
{
throw new System.ArgumentNullException(nameof(expression));
}
_asyncQueryProvider = new MockDbSetAsyncQueryProvider <TEntity>(this);
_asynEnumerator = new MockDbSetAsyncEnumerator <TEntity>(this.AsEnumerable().GetEnumerator());
}
public async Task MoveNext_WhenEndOfEnumerator_ReturnsFalseIfMoved()
{
// Arrange
var heroes = new List <HeroEntity> {
};
var enumerator = new MockDbSetAsyncEnumerator <HeroEntity>(heroes.GetEnumerator()) as IAsyncEnumerator <HeroEntity>;
// Act
var result = await enumerator.MoveNext(CancellationToken.None);
// Assert
Assert.IsFalse(result);
}
public void Dispose_WhenDisposablePatternUsed_InnerEnumeratorDisposeCalled()
{
// Arrange
var mockIAsyncEnumerator = Substitute.For <IEnumerator <HeroEntity> >();
// Act
using (var enumerator = new MockDbSetAsyncEnumerator <HeroEntity>(mockIAsyncEnumerator) as IAsyncEnumerator <HeroEntity>)
{ }
// Assert
mockIAsyncEnumerator.Received(1).Dispose();
}
public async Task Current_WhenCalled_ReturnsItem()
{
// Arrange
var heroes = HeroBuilder.CreateAListOfHeros();
var enumerator = new MockDbSetAsyncEnumerator <HeroEntity>(heroes.GetEnumerator()) as IAsyncEnumerator <HeroEntity>;
// Act
while (await enumerator.MoveNext(CancellationToken.None))
{
var current = enumerator.Current;
// Assert
Assert.IsTrue(heroes.Any(h => h == current));
}
}
public async Task MoveNext_WhenItemInEnumerator_ReturnsTrueIfMoved()
{
// Arrange
var heroes = new List <HeroEntity> {
new HeroEntity {
Id = 21, Name = "Nick Fury"
}
};
var enumerator = new MockDbSetAsyncEnumerator <HeroEntity>(heroes.GetEnumerator()) as IAsyncEnumerator <HeroEntity>;
// Act
var result = await enumerator.MoveNext(CancellationToken.None);
// Assert
Assert.IsTrue(result);
}
public async Task MoveNext_WhenCalled_ReturnsFalseIfAtEnd()
{
// Arrange
var heroes = HeroBuilder.CreateAListOfHeros();
var enumerator = new MockDbSetAsyncEnumerator <HeroEntity>(heroes.GetEnumerator()) as IAsyncEnumerator <HeroEntity>;
var count = 0;
// Act
while (await enumerator.MoveNext(CancellationToken.None))
{
count++;
}
// Assert
Assert.AreEqual(heroes.Count(), count);
}
