added checks for method getVelocity in Test Movement in CarTest.java

@Test setPosition

src/main/java/ch/zhaw/pm2/racetrack/UserInterface.java

@@ -1,94 +0,0 @@
-package ch.zhaw.pm2.racetrack;
-
-import org.beryx.textio.TextIO;
-import org.beryx.textio.TextIoFactory;
-import org.beryx.textio.TextTerminal;
-
-import java.util.List;
-
-public class UserInterface {
-
-    private final TextIO textIO;
-    private final TextTerminal<?> textTerminal;
-
-    /**
-     * Opens a new Terminal Window and prints the welcome Text
-     * @param welcomeText The Text which will be printed after the windows is opened.
-     */
-    public UserInterface(String welcomeText) {
-        textIO = TextIoFactory.getTextIO();
-        textTerminal = textIO.getTextTerminal();
-
-        textTerminal.println(welcomeText + "\n");
-    }
-
-    /**
-     * asks the user to choose one of the options given.
-     * @param text Text which is printed befor the options are printed. Example: "Select Track file:"
-     * @param options List with the options which can be selected.
-     * @return the list index of the selected option
-     */
-    public int selectOption(String text, List<String> options) {
-        textTerminal.println(text + ":\n");
-        for(int option = 0; option < options.size(); option ++) {
-            textTerminal.println(" " + (option + 1) +  ": " + options.get(option));
-        }
-        return textIO.newIntInputReader().withMinVal(1).withMaxVal(options.size()).read("Enter your choice: ") - 1;
-    }
-
-    /**
-     * gives information which player's turn it is and asks for the direction to accelerate
-     * @param playingCarIndex the index of the player
-     * @param playingCarID the ID of the player
-     * @return the direction which is selected by the player. If null -> quit game
-     */
-    public PositionVector.Direction selectDirection(int playingCarIndex, char playingCarID) {
-        PositionVector.Direction direction = null;
-        textTerminal.println("Playing Car " + playingCarIndex + ": " + playingCarIndex);
-        textTerminal.println("Directions are based on the number pad:");
-        textTerminal.println("7 8 9    7=up-left,    8=up,               9=up-right");
-        textTerminal.println("4 5 6    4=left,       5=no acceleration,  6=right");
-        textTerminal.println("1 2 3    1=down-left,  2=down,             3=down-right");
-        textTerminal.println("\n10 = quit \n");
-
-        while (direction == null) { //asks until a valid input in entered
-            int number = textIO.newIntInputReader().withMinVal(1).withMaxVal(10).read("choose your Acceleration direction: ");
-            if (number == 10) { //quit game
-                return null;
-            }
-            direction = getDirection(number);
-        }
-        return direction;
-    }
-
-    /**
-     * returns the the associated direction Object
-     * @param number the number which was typed by the user
-     * @return the associated direction. If null -> unknown number
-     */
-    private PositionVector.Direction getDirection(int number) {
-        return switch (number) {
-            case 1 -> PositionVector.Direction.DOWN_LEFT;
-            case 2 -> PositionVector.Direction.DOWN;
-            case 3 -> PositionVector.Direction.DOWN_RIGHT;
-            case 4 -> PositionVector.Direction.LEFT;
-            case 5 -> PositionVector.Direction.NONE;
-            case 6 -> PositionVector.Direction.RIGHT;
-            case 7 -> PositionVector.Direction.UP_LEFT;
-            case 8 -> PositionVector.Direction.UP;
-            case 9 -> PositionVector.Direction.UP_RIGHT;
-            default -> null;
-        };
-    }
-
-    /**
-     * prints the given Track in the terminal
-     * @param track the track which should be printed
-     */
-    public void printTrack(Track track) {
-            textTerminal.println(track.toString());
-    }
-
-
-
-}

src/test/java/ch/zhaw/pm2/racetrack/CarTest.java

@@ -0,0 +1,187 @@
+
+package ch.zhaw.pm2.racetrack;
+
+import ch.zhaw.pm2.racetrack.strategy.*;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Tests for Class Car
+ */
+class CarTest {
+
+    Car car;
+
+    // Default coordinates for tests
+    int DEFAULT_X = 10;
+    int DEFAULT_Y = 10;
+    char DEFAULT_ID = 'f';
+
+    /**
+     * Create a new Car Object and set Position to a defined Default Position
+     */
+    @BeforeEach
+    void setUp() {
+        car = new Car(DEFAULT_ID, new PositionVector(DEFAULT_X, DEFAULT_Y));
+    }
+
+    @Test
+    void getID() {
+        assertEquals(DEFAULT_ID, car.getID());
+    }
+
+    /**
+     * Method to check nextPosition with coordinates as int
+     *
+     * @param x the expected value for x coordinate
+     * @param y the expected value for y coordinate
+     */
+    void checkNextPosition(int x, int y) {
+        assertEquals(new PositionVector(x, y), car.nextPosition());
+    }
+
+    /**
+     * - checks if the position of the car can be set and saved correctly with valid positions.
+     * - checks if an exception is throwed and position keeps unchanged if invalid coordinates are entered.
+     */
+    @Test
+    void setPosition() {
+        checkNextPosition(DEFAULT_X, DEFAULT_Y);
+
+        // List of valid Positions
+        List<PositionVector> validPositions = new ArrayList<>();
+        validPositions.add(new PositionVector(20, 20));
+        validPositions.add(new PositionVector(0, 0));
+        validPositions.add(new PositionVector(20, 0));
+        validPositions.add(new PositionVector(0, 20));
+
+        for (PositionVector positionVector : validPositions) {
+            car.setPosition(positionVector);
+            assertEquals(positionVector, car.nextPosition());
+        }
+
+        // List of invalid positions.
+        List<PositionVector> invalidPositions = new ArrayList<>();
+        invalidPositions.add(new PositionVector(0, -20));
+        invalidPositions.add(new PositionVector(-20, 0));
+        invalidPositions.add(new PositionVector(-20, -20));
+
+        for (PositionVector positionVector : invalidPositions) {
+            boolean exception = false;
+            try {
+                car.setPosition(positionVector);
+            } catch (IllegalArgumentException e) {
+                exception = true;
+            }
+            assertTrue(exception);
+
+            // position should keep unchanged
+            checkNextPosition(DEFAULT_X, DEFAULT_Y);
+        }
+    }
+
+    void checkVelocity(int x, int y) {
+        assertEquals(new PositionVector(x, y), car.getVelocity());
+    }
+
+
+    /**
+     * Checks if the methods accelerate, move and getVelocity are working correctly with acceleration in all directions.
+     * Checks also if velocity is calculated correctly if method accelerate is called a second time.
+     */
+    @Test
+    void movement() {
+        // add all possible directions in a List
+        List<PositionVector.Direction> directions = Arrays.asList(PositionVector.Direction.values());
+
+        //position shouldn't be changed because velocity should be 0.
+        car.move();
+        checkNextPosition(DEFAULT_X, DEFAULT_Y);
+
+        for (PositionVector.Direction direction1 : directions) {
+
+            //create a new instance of Car with default coordinates and velocity 0.
+            setUp();
+
+            //variables to save the actual expected result of method nextPosition
+            int expectedNextPosX = DEFAULT_X;
+            int expectedNextPosY = DEFAULT_Y;
+
+            //variables to save the acutal expected result of method getVelocity
+            int expectedVelocityX = 0;
+            int expectedVelocityY = 0;
+
+            car.accelerate(direction1);
+            expectedVelocityX += direction1.vector.getX();
+            expectedVelocityY += direction1.vector.getY();
+            expectedNextPosX += direction1.vector.getX();
+            expectedNextPosY += direction1.vector.getY();
+            checkVelocity(expectedVelocityX, expectedVelocityY);
+            checkNextPosition(expectedNextPosX, expectedNextPosY);
+
+            car.move();
+            expectedNextPosX += direction1.vector.getX();
+            expectedNextPosY += direction1.vector.getY();
+            checkVelocity(expectedVelocityX, expectedVelocityY);
+            checkNextPosition(expectedNextPosX, expectedNextPosY);
+
+            for (PositionVector.Direction direction2 : directions) {
+                car.accelerate(direction2);
+                expectedVelocityX += direction2.vector.getX();
+                expectedVelocityY += direction2.vector.getY();
+                expectedNextPosX += direction2.vector.getX();
+                expectedNextPosY += direction2.vector.getY();
+                checkVelocity(expectedVelocityX, expectedVelocityY);
+                checkNextPosition(expectedNextPosX, expectedNextPosY);
+
+                car.move();
+                checkVelocity(expectedVelocityX, expectedVelocityY);
+                expectedNextPosX += (direction1.vector.getX() + direction2.vector.getX());
+                expectedNextPosY += (direction1.vector.getY() + direction2.vector.getY());
+                checkNextPosition(expectedNextPosX, expectedNextPosY);
+            }
+        }
+    }
+
+
+    /**
+     * test for methods crash and isCrashed. checks if state crashed is set and returned correctly.
+     */
+    @Test
+    void crash() {
+        assertFalse(car.isCrashed());
+        car.crash();
+        assertTrue(car.isCrashed());
+    }
+
+    /**
+     * test for methods setMoveStrategy. Checks if the MoveStrategy Object is saved and returned correctly
+     * with all Types of MoveStrategy.
+     */
+    @Test
+    void MoveStrategy() {
+        MoveStrategy moveStrategy;
+
+        moveStrategy = new DoNotMoveStrategy();
+        car.setMoveStrategy(moveStrategy);
+        assertEquals(moveStrategy, car.getMoveStrategy());
+
+        moveStrategy = new MoveListStrategy();
+        car.setMoveStrategy(moveStrategy);
+        assertEquals(moveStrategy, car.getMoveStrategy());
+
+        moveStrategy = new PathFollowerMoveStrategy();
+        car.setMoveStrategy(moveStrategy);
+        assertEquals(moveStrategy, car.getMoveStrategy());
+
+        moveStrategy = new UserMoveStrategy();
+        car.setMoveStrategy(moveStrategy);
+        assertEquals(moveStrategy, car.getMoveStrategy());
+    }
+}