68 lines
2.4 KiB
Java
68 lines
2.4 KiB
Java
package edu.stevens.smartpark;
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/** Dependency-free tests that fail the process when parking rules break. */
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public final class ParkingLotTest {
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private ParkingLotTest() {
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}
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public static void main(String[] args) {
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testArrivalsAndDepartures();
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testFullAndEmptyBoundaries();
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testInvalidStartingValues();
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System.out.println("ParkingLot tests passed");
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}
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private static void testArrivalsAndDepartures() {
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ParkingLot lot = new ParkingLot("Babbio Garage", 120, 42);
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check(lot.getName().equals("Babbio Garage"), "name");
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check(lot.getCapacity() == 120, "capacity");
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check(lot.getOccupiedSpaces() == 78, "initial occupied spaces");
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lot.vehicleEnters();
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check(lot.getAvailableSpaces() == 41, "arrival decreases availability");
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lot.vehicleLeaves();
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check(lot.getAvailableSpaces() == 42, "departure restores availability");
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}
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private static void testFullAndEmptyBoundaries() {
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ParkingLot full = new ParkingLot("River Lot", 1, 0);
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check(full.isFull(), "zero available spaces means full");
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expectIllegalState(full::vehicleEnters);
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full.vehicleLeaves();
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check(full.getAvailableSpaces() == 1, "departure from full lot");
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expectIllegalState(full::vehicleLeaves);
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full.vehicleEnters();
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check(full.isFull(), "arrival fills the last space");
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}
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private static void testInvalidStartingValues() {
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expectIllegalArgument(() -> new ParkingLot("", 10, 5));
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expectIllegalArgument(() -> new ParkingLot("Lot", -1, 0));
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expectIllegalArgument(() -> new ParkingLot("Lot", 10, -1));
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expectIllegalArgument(() -> new ParkingLot("Lot", 10, 11));
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}
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private static void check(boolean condition, String description) {
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if (!condition) {
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throw new AssertionError("Failed: " + description);
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}
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}
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private static void expectIllegalState(Runnable action) {
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try {
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action.run();
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} catch (IllegalStateException expected) {
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return;
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}
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throw new AssertionError("Expected IllegalStateException");
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}
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private static void expectIllegalArgument(Runnable action) {
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try {
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action.run();
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} catch (IllegalArgumentException expected) {
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return;
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}
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throw new AssertionError("Expected IllegalArgumentException");
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}
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}
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