/** Tests the 4-move solution to the water jug problem */
@Test
public void testSolution1() {
assertFalse(problem.success());
tryMove(m1);
assertFalse(problem.success());
tryMove(m5);
assertFalse(problem.success());
tryMove(m1);
assertFalse(problem.success());
tryMove(m5);
assertTrue(problem.success());
}
/** Tests the problem's introduction string. */
@Test
public void testIntro() {
assertTrue(
problem
.getIntroduction()
.equals(
"Welcome to the Water Jug Problem.\n\n"
+ "You are given two empty jugs: jug X holds 3 gallons, jug y holds 4.\n"
+ "Neither has any measuring markers on it. You have a ready supply\n"
+ "of water. You can fill either jug, empty either jug on the ground,\n"
+ "or pour all or some of either jug into the other. The goal is to \n"
+ "get exactly 2 gallons into either jug.\n\n"
+ "Here is your initial state:\n"));
}
/** Tests the 6-move solution to the water jug problem */
@Test
public void testSolution2() {
assertFalse(problem.success());
tryMove(m2);
assertFalse(problem.success());
tryMove(m6);
assertFalse(problem.success());
tryMove(m3);
assertFalse(problem.success());
tryMove(m6);
assertFalse(problem.success());
tryMove(m2);
assertFalse(problem.success());
tryMove(m6);
assertTrue(problem.success());
}
private void tryMove(Move move) {
State state = problem.getCurrentState();
State next = move.doMove(state);
problem.setCurrentState(next);
}
/**
* A class to test the WaterJugProblem class. You should use the BridgeProblemTest class as a model.
*
* @author your name here
*/
public class WaterJugProblemTest {
// You should use the BridgeProblemTest class as a model for setting up
// the tests with private instance fields and methods here.
private Problem problem = new WaterJugProblem();
private List<Move> moves = problem.getMoves();
private Move findMove(String moveName) {
for (Move move : moves) {
if (move.getMoveName().equals(moveName)) {
return move;
}
}
return null;
}
/** Initialize the moves */
Move m1 = findMove("Fill Jug X");
Move m2 = findMove("Fill Jug Y");
Move m3 = findMove("Empty Jug X");
Move m4 = findMove("Empty Jug Y");
Move m5 = findMove("Transfer Jug X to Jug Y");
Move m6 = findMove("Transfer Jug Y to Jug X");
private void tryMove(Move move) {
State state = problem.getCurrentState();
State next = move.doMove(state);
problem.setCurrentState(next);
}
/** Tests to be sure the problem represents all the moves. */
@Test
public void testMoves() {
assertTrue(m1 != null);
assertTrue(m2 != null);
assertTrue(m3 != null);
assertTrue(m4 != null);
assertTrue(m5 != null);
assertTrue(m6 != null);
}
/** Tests the 4-move solution to the water jug problem */
@Test
public void testSolution1() {
assertFalse(problem.success());
tryMove(m1);
assertFalse(problem.success());
tryMove(m5);
assertFalse(problem.success());
tryMove(m1);
assertFalse(problem.success());
tryMove(m5);
assertTrue(problem.success());
}
/** Tests the 6-move solution to the water jug problem */
@Test
public void testSolution2() {
assertFalse(problem.success());
tryMove(m2);
assertFalse(problem.success());
tryMove(m6);
assertFalse(problem.success());
tryMove(m3);
assertFalse(problem.success());
tryMove(m6);
assertFalse(problem.success());
tryMove(m2);
assertFalse(problem.success());
tryMove(m6);
assertTrue(problem.success());
}
/** Tests the problem's introduction string. */
@Test
public void testIntro() {
assertTrue(
problem
.getIntroduction()
.equals(
"Welcome to the Water Jug Problem.\n\n"
+ "You are given two empty jugs: jug X holds 3 gallons, jug y holds 4.\n"
+ "Neither has any measuring markers on it. You have a ready supply\n"
+ "of water. You can fill either jug, empty either jug on the ground,\n"
+ "or pour all or some of either jug into the other. The goal is to \n"
+ "get exactly 2 gallons into either jug.\n\n"
+ "Here is your initial state:\n"));
}
}
