Update the tests of the classes I just updated.

platforms/reference/tests/TestReferenceAndersenThermostat.cpp

@@ -64,6 +64,7 @@ void testTemperature() {
     system.addForce(forceField);
     AndersenThermostat* thermstat = new AndersenThermostat(temp, collisionFreq);
     system.addForce(thermstat);
+    ASSERT(!thermostat->usesPeriodicBoundaryConditions());
     Context context(system, integrator, platform);
     vector<Vec3> positions(numParticles);
     for (int i = 0; i < numParticles; ++i)

platforms/reference/tests/TestReferenceMonteCarloAnisotropicBarostat.cpp

@@ -75,6 +75,8 @@ void testIdealGas() {
     }
     MonteCarloAnisotropicBarostat* barostat = new MonteCarloAnisotropicBarostat(Vec3(pressure, pressure, pressure), temp[0], true, true, true, frequency);
     system.addForce(barostat);
+    ASSERT(barostat->usesPeriodicBoundaryConditions());
+    ASSERT(system.usesPeriodicBoundaryConditions());
     
     // Test it for three different temperatures.
     
@@ -134,6 +136,8 @@ void testIdealGasAxis(int axis) {
     }
     MonteCarloAnisotropicBarostat* barostat = new MonteCarloAnisotropicBarostat(Vec3(pressure, pressure, pressure), temp[0], scaleX, scaleY, scaleZ, frequency);
     system.addForce(barostat);
+    ASSERT(barostat->usesPeriodicBoundaryConditions());
+    ASSERT(system.usesPeriodicBoundaryConditions());
     
     // Test it for three different temperatures.
     
@@ -191,6 +195,8 @@ void testRandomSeed() {
     system.addForce(forceField);
     MonteCarloAnisotropicBarostat* barostat = new MonteCarloAnisotropicBarostat(Vec3(pressure, pressure, pressure), temp, true, true, true, 1);
     system.addForce(barostat);
+    ASSERT(barostat->usesPeriodicBoundaryConditions());
+    ASSERT(system.usesPeriodicBoundaryConditions());
     vector<Vec3> positions(numParticles);
     vector<Vec3> velocities(numParticles);
     for (int i = 0; i < numParticles; ++i) {

platforms/reference/tests/TestReferenceMonteCarloBarostat.cpp

@@ -112,6 +112,8 @@ void testIdealGas() {
     }
     MonteCarloBarostat* barostat = new MonteCarloBarostat(pressure, temp[0], frequency);
     system.addForce(barostat);
+    ASSERT(barostat->usesPeriodicBoundaryConditions());
+    ASSERT(system.usesPeriodicBoundaryConditions());
 
     // Test it for three different temperatures.
 
@@ -159,6 +161,8 @@ void testRandomSeed() {
     system.addForce(forceField);
     MonteCarloBarostat* barostat = new MonteCarloBarostat(pressure, temp, 1);
     system.addForce(barostat);
+    ASSERT(barostat->usesPeriodicBoundaryConditions());
+    ASSERT(system.usesPeriodicBoundaryConditions());
     vector<Vec3> positions(numParticles);
     vector<Vec3> velocities(numParticles);
     for (int i = 0; i < numParticles; ++i) {

platforms/reference/tests/TestReferenceMonteCarloMembraneBarostat.cpp

@@ -75,6 +75,8 @@ void testIdealGas(MonteCarloMembraneBarostat::XYMode xymode, MonteCarloMembraneB
     }
     MonteCarloMembraneBarostat* barostat = new MonteCarloMembraneBarostat(pressure, tension, temp[0], xymode, zmode, frequency);
     system.addForce(barostat);
+    ASSERT(barostat->usesPeriodicBoundaryConditions());
+    ASSERT(system.usesPeriodicBoundaryConditions());
 
     // Test it for three different temperatures.
 
@@ -132,6 +134,8 @@ void testRandomSeed() {
     system.addForce(forceField);
     MonteCarloMembraneBarostat* barostat = new MonteCarloMembraneBarostat(pressure, tension, temp, MonteCarloMembraneBarostat::XYAnisotropic, MonteCarloMembraneBarostat::ZFree, 1);
     system.addForce(barostat);
+    ASSERT(barostat->usesPeriodicBoundaryConditions());
+    ASSERT(system.usesPeriodicBoundaryConditions());
     vector<Vec3> positions(numParticles);
     vector<Vec3> velocities(numParticles);
     for (int i = 0; i < numParticles; ++i) {