public async Task SingleOrDefaultAsync_NoValue()
{
EntityMapping.RegisterType(typeof(QueryableAsyncModel));
var connection = TestConfiguration.GetConnection();
var provider = new MongoFrameworkQueryProvider <QueryableAsyncModel>(connection);
var queryable = new MongoFrameworkQueryable <QueryableAsyncModel>(provider);
Assert.IsNull(await queryable.SingleOrDefaultAsync());
}
public async Task SingleOrDefaultAsync_HasValue()
{
EntityMapping.RegisterType(typeof(QueryableAsyncModel));
var connection = TestConfiguration.GetConnection();
var context = new MongoDbContext(connection);
var provider = new MongoFrameworkQueryProvider <QueryableAsyncModel>(connection);
var queryable = new MongoFrameworkQueryable <QueryableAsyncModel>(provider);
context.ChangeTracker.SetEntityState(new QueryableAsyncModel {
Title = "SingleOrDefaultAsync_HasValue.1"
}, EntityEntryState.Added);
context.SaveChanges();
var result = await queryable.SingleOrDefaultAsync();
Assert.AreEqual("SingleOrDefaultAsync_HasValue.1", result.Title);
}
public async Task SingleOrDefaultAsync_HasMoreThanOneValue()
{
EntityMapping.RegisterType(typeof(QueryableAsyncModel));
var connection = TestConfiguration.GetConnection();
var context = new MongoDbContext(connection);
var provider = new MongoFrameworkQueryProvider <QueryableAsyncModel>(connection);
var queryable = new MongoFrameworkQueryable <QueryableAsyncModel>(provider);
context.ChangeTracker.SetEntityState(new QueryableAsyncModel {
Title = "SingleOrDefaultAsync_HasMoreThanOneValue.1"
}, EntityEntryState.Added);
context.ChangeTracker.SetEntityState(new QueryableAsyncModel {
Title = "SingleOrDefaultAsync_HasMoreThanOneValue.2"
}, EntityEntryState.Added);
context.SaveChanges();
await Assert.ThrowsExceptionAsync <InvalidOperationException>(async() => await queryable.SingleOrDefaultAsync());
}
