/** Test of getInstance method, of class ScriptingContainer. */
@Test
public void testGetInstance() {
System.out.println("getInstance");
Object receiver = null;
Class<Object> clazz = null;
ScriptingContainer instance = new ScriptingContainer();
Object expResult = null;
Object result = instance.getInstance(receiver, clazz);
assertEquals(expResult, result);
// calculates Plutonium decay
instance.put("$h", 24100.0); // half-life of Plutonium is 24100 years.
String filename = "org/jruby/embed/ruby/radioactive_decay.rb";
receiver = instance.runScriptlet(PathType.CLASSPATH, filename);
result = instance.getInstance(receiver, RadioActiveDecay.class);
double initial = 10.0; // 10.0 g
double years = 1000; // 1000 years
double amount_left = ((RadioActiveDecay) result).amountAfterYears(initial, years);
assertEquals(9.716483752784367, amount_left, 0.00000000001);
amount_left = 1.0;
years = ((RadioActiveDecay) result).yearsToAmount(initial, amount_left);
assertEquals(80058.46708678544, years, 0.00000000001);
// calculates position and velocity after some seconds have past
instance.put("initial_velocity", 16.0);
instance.put("initial_height", 32.0);
instance.put("system", "english");
filename = "org/jruby/embed/ruby/position_function.rb";
receiver = instance.runScriptlet(PathType.CLASSPATH, filename);
result = instance.getInstance(receiver, PositionFunction.class);
double time = 2.0;
double position = ((PositionFunction) result).getPosition(time);
assertEquals(0.0, position, 0.01);
double velocity = ((PositionFunction) result).getVelocity(time);
assertEquals(-48.0, velocity, 0.01);
List<String> units = ((PositionFunction) result).getUnits();
assertEquals("ft./sec", units.get(0));
assertEquals("ft.", units.get(1));
}
