Add get row,col test

Author: jsoberg

src/test/kotlin/com/soberg/aoc/utlities/datastructures/Grid2DTest.kt

@@ -39,6 +39,12 @@ class Grid2DTest {
             .isEqualTo(333)
     }
 
+    @Test
+    fun `return expected element for get row, col`() {
+        assertThat(testGrid[3, 3])
+            .isEqualTo(4444)
+    }
+
     @Test
     fun `return expected element for elementAt`() {
         val actual = testGrid.elementAt(Location(2, 2), Direction.NorthWest, 2)