// The MIT License (MIT)

//

// Copyright (c) 2015-2020 Rasmus Mikkelsen

// Copyright (c) 2015-2020 eBay Software Foundation

// https://github.com/eventflow/EventFlow

//

// Permission is hereby granted, free of charge, to any person obtaining a copy of

// this software and associated documentation files (the "Software"), to deal in

// the Software without restriction, including without limitation the rights to

// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of

// the Software, and to permit persons to whom the Software is furnished to do so,

// subject to the following conditions:

//

// The above copyright notice and this permission notice shall be included in all

// copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS

// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR

// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER

// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

using System;

using System.Threading.Tasks;

namespace EventFlow.TestHelpers

{

public static class WaitHelper

{

public static async Task WaitAsync(TimeSpan timeout, Func<Task<bool>> waitFor)

{

var start = DateTimeOffset.Now;

while (start + timeout > DateTimeOffset.Now)

{

var result = await waitFor().ConfigureAwait(false);

if (result) return;

await Task.Delay(TimeSpan.FromSeconds(0.25)).ConfigureAwait(false);

}

throw new ApplicationException("Failed to wait");

}

}

}