Function BuildRequestOrderTest

src/test/txrequest_tests.cpp:455–483

Add to scenario a test with one peer announcing two transactions, to verify they are * fetched in announcement order. * * config is an integer in [0, 4) inclusive, and selects the variant of the test. */

 *  config is an integer in [0, 4) inclusive, and selects the variant of the test.
 */
void BuildRequestOrderTest(Scenario& scenario, int config)
{
    scenario.SetTestName(strprintf("RequestOrder(config=%i)", config));

    auto peer = scenario.NewPeer();
    auto gtxid1 = scenario.NewGTxid();
    auto gtxid2 = scenario.NewGTxid();

    auto reqtime2 = scenario.Now() + RandomTime8s();
    auto reqtime1 = reqtime2 + RandomTime8s();

    scenario.ReceivedInv(peer, gtxid1, config & 1, reqtime1);
    // Simulate time going backwards by giving the second announcement an earlier reqtime.
    scenario.ReceivedInv(peer, gtxid2, config & 2, reqtime2);

    scenario.AdvanceTime(reqtime2 - MICROSECOND - scenario.Now());
    scenario.Check(peer, {}, 2, 0, 0, "o1");
    scenario.AdvanceTime(MICROSECOND);
    scenario.Check(peer, {gtxid2}, 2, 0, 0, "o2");
    scenario.AdvanceTime(reqtime1 - MICROSECOND - scenario.Now());
    scenario.Check(peer, {gtxid2}, 2, 0, 0, "o3");
    scenario.AdvanceTime(MICROSECOND);
    // Even with time going backwards in between announcements, the return value of GetRequestable is in
    // announcement order.
    scenario.Check(peer, {gtxid1, gtxid2}, 2, 0, 0, "o4");

    scenario.DisconnectedPeer(peer);
    scenario.Check(peer, {}, 0, 0, 0, "o5");
}

/** Add to scenario a test that verifies behavior related to both txid and wtxid with the same
 *  hash being announced.