public async Task SolveMission_RequestSuccessful_ReturnMissionResult()
{
var json = "{ \"Success\": \"true\" }";
_requestor.Setup(g => g.PostRequest(It.IsAny <string>(), null))
.Returns(Task.FromResult(json));
var result = await _missionService.SolveMission(It.IsAny <string>(), It.IsAny <string>());
Assert.That(result.Success, Is.EqualTo(true));
}