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