src/gromacs/coordinateio/tests/setstarttime.cpp

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  35 /*!\internal
  36  * \file
  37  * \brief
  38  * Tests for gmx::SetStartTime
  39  *
  40  * \author Paul Bauer <paul.bauer.q@gmail.com>
  41  * \ingroup module_coordinateio
  42  */
  43
  44
  45 #include "gmxpre.h"
  46
  47 #include <memory>
  48
  49 #include "gromacs/coordinateio/outputadapters/setstarttime.h"
  50 #include "gromacs/trajectory/trajectoryframe.h"
  51
  52 #include "gromacs/coordinateio/tests/coordinate_test.h"
  53
  54 namespace gmx
  55 {
  56
  57 namespace test
  58 {
  59
  60 /*!\brief
  61  * Test fixture to prepare a setatoms object to pass data through.
  62  */
  63 class SetStartTimeTest : public gmx::test::CommandLineTestBase
  64 {
  65     public:
  66         SetStartTimeTest()
  67         {
  68             clear_trxframe(frame(), true);
  69         }
  70         /*! \brief
  71          * Get access to the method for changing frame time information.
  72          *
  73          * \param[in] startTime User supplied start time to test.
  74          */
  75         SetStartTime *setStartTime(real startTime)
  76         {
  77             if (!setStartTime_)
  78             {
  79                 setStartTime_ = std::make_unique<SetStartTime>(startTime);
  80             }
  81             return setStartTime_.get();
  82         }
  83         //! Get access to trajectoryframe to mess with.
  84         t_trxframe *frame() { return &frame_; }
  85
  86     private:
  87         //! Object to use for tests
  88         SetStartTimePointer     setStartTime_;
  89         //! Storage of trajectoryframe.
  90         t_trxframe              frame_;
  91 };
  92
  93 TEST_F(SetStartTimeTest, WorksWithNonZeroStart)
  94 {
  95     frame()->bTime = false;
  96     frame()->time  = 5;
  97     // Set step to nonsense value to check that it is ignored.
  98     SetStartTime *method = setStartTime(42);
  99     EXPECT_NO_THROW(method->processFrame(0, frame()));
 100     EXPECT_TRUE(frame()->bTime);
 101     EXPECT_EQ(frame()->time, 42);
 102     // Set frame time again to simulate advancing to new time.
 103     frame()->time = 15;
 104     EXPECT_NO_THROW(method->processFrame(1, frame()));
 105     EXPECT_EQ(frame()->time, 52);
 106     // Expect to use next frame time to get correct time step again.
 107     frame()->time = 20;
 108     EXPECT_NO_THROW(method->processFrame(2, frame()));
 109     EXPECT_EQ(frame()->time, 57);
 110 }
 111
 112 TEST_F(SetStartTimeTest, WorksWithZeroStart)
 113 {
 114     frame()->time = 42;
 115     SetStartTime *method = setStartTime(0);
 116     EXPECT_NO_THROW(method->processFrame(0, frame()));
 117     EXPECT_EQ(frame()->time, 0);
 118     // No matter what the next time in the frame is, ignore it.
 119     frame()->time = 65;
 120     EXPECT_NO_THROW(method->processFrame(1, frame()));
 121     EXPECT_EQ(frame()->time, 23);
 122     // And so on for more frames.
 123     frame()->time = 72;
 124     EXPECT_NO_THROW(method->processFrame(2, frame()));
 125     EXPECT_EQ(frame()->time, 30);
 126 }
 127
 128 } // namespace test
 129
 130 } // namespace gmx