public async Task PostWithModelParam_WhenInvoked_ShouldAddEntityToRepository()
{
// Arrange
SimpleEntity entityPassedToRepo = null;
_MockEntityRepository
.Setup(repo => repo.AddEntity(It.IsAny <SimpleEntity>()))
.Callback <SimpleEntity>(paramSimpleEntity => entityPassedToRepo = paramSimpleEntity);
var client = _Server.CreateClient();
// Act
var postResponse = await client.PostAsync("/api/entities", new JsonContent(JToken.FromObject(new SimpleEntity("new 1"))));
postResponse.EnsureSuccessStatusCode();
// Assert
_MockEntityRepository.VerifyAll();
postResponse.StatusCode.Should().Be(HttpStatusCode.OK);
entityPassedToRepo.Should().BeEquivalentTo(new SimpleEntity("new 1"));
}