public async Task DeleteJsonAsync_Should_Delete_User_Json_With_Same_IdAsync(string username, Guid jsonId)
{
Expression <Func <DbJson, bool> > expression = null;
_mongoCollectionClient
.When(x => x.DeleteOneAsync(username, Arg.Any <Expression <Func <DbJson, bool> > >()))
.Do(info => { expression = (Expression <Func <DbJson, bool> >)info[1]; });
await _jsonRepositoryInstance.DeleteJsonAsync(username, jsonId);
Expression <Func <DbJson, bool> > expectedExpression = x => x.Id == jsonId;
Assert.IsTrue(Lambda.Eq(expectedExpression, expression));
}