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      1 // Ceres Solver - A fast non-linear least squares minimizer
      2 // Copyright 2012 Google Inc. All rights reserved.
      3 // http://code.google.com/p/ceres-solver/
      4 //
      5 // Redistribution and use in source and binary forms, with or without
      6 // modification, are permitted provided that the following conditions are met:
      7 //
      8 // * Redistributions of source code must retain the above copyright notice,
      9 //   this list of conditions and the following disclaimer.
     10 // * Redistributions in binary form must reproduce the above copyright notice,
     11 //   this list of conditions and the following disclaimer in the documentation
     12 //   and/or other materials provided with the distribution.
     13 // * Neither the name of Google Inc. nor the names of its contributors may be
     14 //   used to endorse or promote products derived from this software without
     15 //   specific prior written permission.
     16 //
     17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     18 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     21 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     25 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     26 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     27 // POSSIBILITY OF SUCH DAMAGE.
     28 //
     29 // Author: keir (at) google.com (Keir Mierle)
     30 
     31 #include "gtest/gtest.h"
     32 #include "ceres/iteration_callback.h"
     33 #include "ceres/minimizer.h"
     34 #include "ceres/solver.h"
     35 
     36 namespace ceres {
     37 namespace internal {
     38 
     39 class FakeIterationCallback : public IterationCallback {
     40  public:
     41   virtual ~FakeIterationCallback() {}
     42   virtual CallbackReturnType operator()(const IterationSummary& summary) {
     43     return SOLVER_CONTINUE;
     44   }
     45 };
     46 
     47 TEST(Minimizer, InitializationCopiesCallbacks) {
     48   FakeIterationCallback callback0;
     49   FakeIterationCallback callback1;
     50 
     51   Solver::Options solver_options;
     52   solver_options.callbacks.push_back(&callback0);
     53   solver_options.callbacks.push_back(&callback1);
     54 
     55   Minimizer::Options minimizer_options(solver_options);
     56   ASSERT_EQ(2, minimizer_options.callbacks.size());
     57 
     58   EXPECT_EQ(minimizer_options.callbacks[0], &callback0);
     59   EXPECT_EQ(minimizer_options.callbacks[1], &callback1);
     60 }
     61 
     62 class AbortingIterationCallback : public IterationCallback {
     63  public:
     64   virtual ~AbortingIterationCallback() {}
     65   virtual CallbackReturnType operator()(const IterationSummary& summary) {
     66     return SOLVER_ABORT;
     67   }
     68 };
     69 
     70 TEST(Minimizer, UserAbortUpdatesSummaryMessage) {
     71   AbortingIterationCallback callback;
     72   Solver::Options solver_options;
     73   solver_options.callbacks.push_back(&callback);
     74   Minimizer::Options minimizer_options(solver_options);
     75   Solver::Summary summary;
     76   Minimizer::RunCallbacks(minimizer_options, IterationSummary(), &summary);
     77   EXPECT_EQ(summary.message, "User callback returned SOLVER_ABORT.");
     78 }
     79 
     80 class SucceedingIterationCallback : public IterationCallback {
     81  public:
     82   virtual ~SucceedingIterationCallback() {}
     83   virtual CallbackReturnType operator()(const IterationSummary& summary) {
     84     return SOLVER_TERMINATE_SUCCESSFULLY;
     85   }
     86 };
     87 
     88 TEST(Minimizer, UserSuccessUpdatesSummaryMessage) {
     89   SucceedingIterationCallback callback;
     90   Solver::Options solver_options;
     91   solver_options.callbacks.push_back(&callback);
     92   Minimizer::Options minimizer_options(solver_options);
     93   Solver::Summary summary;
     94   Minimizer::RunCallbacks(minimizer_options, IterationSummary(), &summary);
     95   EXPECT_EQ(summary.message,
     96             "User callback returned SOLVER_TERMINATE_SUCCESSFULLY.");
     97 }
     98 
     99 }  // namespace internal
    100 }  // namespace ceres
    101