testDeviceExceptionFlagPropagation.cc

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// SPDX-FileCopyrightText: Deutsches Elektronen-Synchrotron DESY, MSK, ChimeraTK Project <chimeratk-support@desy.de>
// SPDX-License-Identifier: LGPL-3.0-or-later
#define BOOST_TEST_MODULE testDeviceExceptionFlagPropagation
 
#include "Application.h"
#include "ApplicationModule.h"
#include "check_timeout.h"
#include "DeviceModule.h"
#include "PeriodicTrigger.h"
#include "TestFacility.h"
#include "VariableGroup.h"
 
#include <ChimeraTK/DummyRegisterAccessor.h>
#include <ChimeraTK/ExceptionDummyBackend.h>
 
#define BOOST_NO_EXCEPTIONS
#include <boost/test/included/unit_test.hpp>
#undef BOOST_NO_EXCEPTIONS
using namespace boost::unit_test_framework;
 
namespace ctk = ChimeraTK;
 
namespace Tests::testDeviceExceptionFlagPropagation {
 
  constexpr std::string_view ExceptionDummyCDD1{"(ExceptionDummy:1?map=test3.map)"};
 
  /********************************************************************************************************************/
 
  struct TestApplication : ctk::Application {
    TestApplication() : Application("testSuite") {}
    ~TestApplication() override { shutdown(); }
 
    struct Name : ctk::ApplicationModule {
      using ctk::ApplicationModule::ApplicationModule;
 
      struct Name2 : ctk::VariableGroup {
        using ctk::VariableGroup::VariableGroup;
        ctk::ScalarOutput<uint64_t> tick{this, "tick", "", ""};
      } name{(this), "name", ""}; // extra parentheses are for doxygen...
 
      void prepare() override { name.tick.write(); /* send initial value */ }
      void mainLoop() override {}
    } name{this, "name", ""};
 
    struct Module : ctk::ApplicationModule {
      using ctk::ApplicationModule::ApplicationModule;
 
      mutable int readMode{0};
 
      struct Vars : ctk::VariableGroup {
        using ctk::VariableGroup::VariableGroup;
        ctk::ScalarPushInput<uint64_t> tick{this, "/trigger/tick", "", ""};
        ctk::ScalarPollInput<int> read{this, "/MyModule/readBack", "", ""};
        ctk::ScalarOutput<int> set{this, "/MyModule/actuator", "", ""};
      } vars{this, ".", ""};
 
      std::atomic<ctk::DataValidity> readDataValidity{ctk::DataValidity::ok};
 
      void prepare() override {
        readDataValidity = vars.read.dataValidity();
        // The receiving end of all accessor implementations should be constructed with faulty (Initial value
        // propagation spec, D.1)
        BOOST_CHECK(readDataValidity == ctk::DataValidity::faulty);
        vars.set.write(); /* send initial value */
      }
 
      void mainLoop() override {
        readDataValidity = vars.read.dataValidity();
        while(true) {
          vars.tick.read();
          readDataValidity = vars.read.dataValidity();
          switch(readMode) {
            case 0:
              vars.read.readNonBlocking();
              break;
            case 1:
              vars.read.readLatest();
              break;
            case 2:
              vars.read.read();
              break;
            case 3:
              vars.set.write();
              break;
            case 4:
              vars.set.writeDestructively();
              break;
            default:
              break;
          }
        }
      }
 
    } module{this, "module", ""};
 
    ctk::DeviceModule dev{this, ExceptionDummyCDD1.data(), "/fakeTriggerToMakeUnusedPollRegsHappy"};
  };
 
  /********************************************************************************************************************/
 
  BOOST_AUTO_TEST_CASE(testDirectConnectOpen) {
    for(int readMode = 0; readMode < 2; ++readMode) {
      std::cout << "testDirectConnectOpen (readMode = " << readMode << ")" << std::endl;
 
      TestApplication app;
 
      boost::shared_ptr<ctk::ExceptionDummy> dummyBackend1 = boost::dynamic_pointer_cast<ctk::ExceptionDummy>(
          ChimeraTK::BackendFactory::getInstance().createBackend(ExceptionDummyCDD1.data()));
 
      ctk::TestFacility test(app, false);
 
      // Throw on device open and check if DataValidity::faulty gets propagated
      dummyBackend1->throwExceptionOpen = true;
      // set the read mode
      app.module.readMode = readMode;
      std::cout << "Read mode is: " << app.module.readMode << ". Run application.\n";
 
      // app.run();
      test.runApplication();
 
      CHECK_EQUAL_TIMEOUT(
          test.readScalar<int>("Devices/" + ctk::Utilities::escapeName(ExceptionDummyCDD1.data(), false) + "/status"),
          1, 10000);
 
      // Trigger and check
      test.writeScalar<uint64_t>("/trigger/tick", 1);
      usleep(10000);
      BOOST_CHECK(app.module.readDataValidity == ctk::DataValidity::faulty);
 
      // recover from error state
      dummyBackend1->throwExceptionOpen = false;
      CHECK_TIMEOUT(app.module.readDataValidity == ctk::DataValidity::ok, 10000);
    }
  }
 
  /********************************************************************************************************************/
 
  BOOST_AUTO_TEST_CASE(testDirectConnectRead) {
    std::cout << "testDirectConnectRead" << std::endl;
    TestApplication app;
    boost::shared_ptr<ctk::ExceptionDummy> dummyBackend1 = boost::dynamic_pointer_cast<ctk::ExceptionDummy>(
        ChimeraTK::BackendFactory::getInstance().createBackend(ExceptionDummyCDD1.data()));
 
    app.module.vars.tick = {&app.module.vars, "/trigger/tick", "", ""};
 
    app.getModel().writeGraphViz("testDirectConnectRead.dot");
 
    ctk::TestFacility test(app);
    test.runApplication();
 
    // Advance through all read methods
    while(app.module.readMode < 3) {
      // Check
      test.writeScalar<uint64_t>("/trigger/tick", 1);
      test.stepApplication();
      BOOST_CHECK(app.module.vars.read.dataValidity() == ctk::DataValidity::ok);
 
      // Check
      std::cout << "Checking read mode " << app.module.readMode << "\n";
      dummyBackend1->throwExceptionRead = true;
      test.writeScalar<uint64_t>("/trigger/tick", 1);
      test.stepApplication(false);
      BOOST_CHECK(app.module.vars.read.dataValidity() == ctk::DataValidity::faulty);
 
      // Reset throwing and let the device recover
      dummyBackend1->throwExceptionRead = false;
      test.stepApplication(true);
 
      // advance to the next read
      app.module.readMode++;
    }
  }
 
  /********************************************************************************************************************/
 
  BOOST_AUTO_TEST_CASE(testDirectConnectWrite) {
    std::cout << "testDirectConnectWrite" << std::endl;
    TestApplication app;
    boost::shared_ptr<ctk::ExceptionDummy> dummyBackend1 = boost::dynamic_pointer_cast<ctk::ExceptionDummy>(
        ChimeraTK::BackendFactory::getInstance().createBackend(ExceptionDummyCDD1.data()));
 
    app.module.readMode = 3;
 
    ctk::TestFacility test(app);
    test.runApplication();
 
    // Advance through all non-blocking read methods
    while(app.module.readMode < 5) {
      // Check
      test.writeScalar<uint64_t>("/trigger/tick", 1);
      test.stepApplication();
      BOOST_CHECK(app.module.vars.set.dataValidity() == ctk::DataValidity::ok);
 
      // Check
      dummyBackend1->throwExceptionWrite = true;
      test.writeScalar<uint64_t>("/trigger/tick", 1);
      test.stepApplication(false);
      // write operations failing does not invalidate data
      BOOST_CHECK(app.module.vars.set.dataValidity() == ctk::DataValidity::ok);
 
      // advance to the next read
      dummyBackend1->throwExceptionWrite = false;
      app.module.readMode++;
    }
  }
 
  /********************************************************************************************************************/
 
} // namespace Tests::testDeviceExceptionFlagPropagation