LinearSolverSetupFailure.cpp

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// @HEADER
// *****************************************************************************
//                    Teuchos: Common Tools Package
//
// Copyright 2004 NTESS and the Teuchos contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#include "Trilinos_LinearSolverSetupFailure.hpp"
#include "Teuchos_UnitTestHarness.hpp"
#include <type_traits>

namespace { // (anonymous)

  void throws_LSSF () {
    throw Trilinos::LinearSolverSetupFailure ("Not an std::runtime_error");
  }

  void does_not_throw () {
  }

  void throws_runtime_error () {
    throw std::runtime_error ("Not a LinearSolverSetupFailure");
  }

  void catches_LSSF_0 (bool& success, Teuchos::FancyOStream& out) {
    out << "Test that LinearSolverSetupFailure has a what() method that "
      "returns something convertible to std::string, and test that the "
      "resulting message is as expected" << std::endl;
    Teuchos::OSTab tab1 (out);
    bool threw = false;
    try {
      throws_LSSF ();
    }
    catch (Trilinos::LinearSolverSetupFailure& e) {
      threw = true;
      const std::string msg (e.what ());
      TEST_ASSERT( msg == "Not an std::runtime_error" );
    }
    TEST_ASSERT( threw );
  }

  void catches_LSSF_1 (bool& success, Teuchos::FancyOStream& out) {
    out << "Test that LinearSolverSetupFailure is a subclass of "
      "std::runtime_error" << std::endl;
    Teuchos::OSTab tab1 (out);

    bool first_threw = false;
    try {
      throws_LSSF ();
    }
    catch (std::runtime_error& e) {
      first_threw = true;
      const std::string msg (e.what ());
      TEST_ASSERT(msg == "Not an std::runtime_error");
    }
    TEST_ASSERT( first_threw );
    static_assert (std::has_virtual_destructor<Trilinos::LinearSolverSetupFailure>::value,
      "LinearSolverSetupFailure does not have a virtual destructor.  "
      "This is bad for memory safety, because LinearSolverSetupFailure "
      "inherits from a class with virtual methods.");

    bool second_threw = false;
    try {
      throws_runtime_error ();
    }
    catch (std::runtime_error& e) {
      second_threw = true;
      const std::string msg (e.what ());
      TEST_ASSERT(msg == "Not a LinearSolverSetupFailure");
    }
    TEST_ASSERT( second_threw );
  }

  TEUCHOS_UNIT_TEST( LinearSolverSetupFailure, Test0 )
  {
    using std::endl;

    out << "LinearSolverSetupFailure Test0" << endl;
    Teuchos::OSTab tab1 (out);
    TEST_NOTHROW( does_not_throw () ); // sanity-check TEST_NOTHROW macro itself
    TEST_NOTHROW( catches_LSSF_0 (success, out) );
    TEST_NOTHROW( catches_LSSF_1 (success, out) );
  }
} // (anonymous)