Implementation of move_forward-function - function implementation and 4 tests...

Implementation of move_forward-function - function implementation and 4 tests ran in order to see if the function works without any issues

rover.py

@@ -77,10 +77,22 @@ class Rover:
         self.x = x
         self.y = y
         self.direction = direction
-
+        self.directions = ['N', 'E', 'S', 'W']
+
+    def move_forward(self):
+        if self.direction == 'N':
+            self.y += 1
+        elif self.direction == 'S':
+            self.y -= 1
+        elif self.direction == 'E':
+            self.x += 1
+        elif self.direction == 'W':
+            self.x -= 1
 
     def drive(self, cmd: str) -> str:
-        pass
+        for c in cmd:
+            if c == 'F':
+                self.move_forward()
 
 
 class Mars:
@@ -105,3 +117,32 @@ class Map:
 class MissionControl:
     def __init__(self):
         pass
+
+
+class TestRover(unittest.TestCase):
+
+    # Test Move Forward in Different Directions
+    def test_move_forward_north(self):
+        rover = Rover(0, 0, 'N')
+        rover.move_forward()
+        self.assertEqual((rover.x, rover.y), (0,1))
+    
+    def test_move_forward_south(self):
+        rover = Rover(0, 1, 'S')
+        rover.move_forward()
+        self.assertEqual((rover.x, rover.y), (0,0))
+
+    def test_move_forward_east(self):
+        rover = Rover(0, 0, 'E')
+        rover.move_forward()
+        self.assertEqual((rover.x, rover.y), (1,0))
+
+    def test_move_forward_west(self):
+        rover = Rover(1, 0, 'W')
+        rover.move_forward()
+        self.assertEqual((rover.x, rover.y), (0,0))
+
+    
+
+if __name__ == '__main__':
+    unittest.main()
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