public async Task CreateAsync()
{
var apiConnection = Substitute.For <IApiConnection>();
var client = new ListingClient(apiConnection);
await client.CreateAsync(new CreateListing());
await apiConnection.Received().ExecutePostAsync <object, Listing>("listings", Arg.Any <object>());
}
public async Task CreateAsync_CreateListingNull_Throw()
{
var apiConnection = Substitute.For <IApiConnection>();
var client = new ListingClient(apiConnection);
await Assert.ThrowsExceptionAsync <ArgumentNullException>(async() => await client.CreateAsync(null));
await apiConnection.DidNotReceive().ExecutePostAsync <object, Listing>("listings", Arg.Any <object>());
}