Solución Reto 5 y tests

Author: Achalogy

retos/reto-5/main.ts

@@ -0,0 +1,20 @@
+function cyberReindeer(road, time) {
+  let moves = [road]
+  let a = 0
+  let b = "."
+
+  for (let i = 1; i < time; i++) {
+    if (i == 5) road = road.replace(/\|/g, "*")
+    const newRoad = road.replace(/S[\.\*]/, `${b}S`)
+    if (newRoad != road) {
+      a++
+      b = road[a]
+    }
+    road = newRoad
+    moves.push(road)
+  }
+
+  return moves;
+}
+
+module.exports = cyberReindeer

retos/reto-5/reto5.test.ts

@@ -0,0 +1,70 @@
+const cyberReindeer = require('./main.ts')
+
+test("Test #01 - Returns an Array", () => {
+  expect(
+    Array.isArray(
+      cyberReindeer('S..|...|..', 10)
+    )
+  ).toBe(true)
+})
+
+test("Test #02 - cyberReindeer('S..|...|..', 10)", () => {
+  expect(cyberReindeer('S..|...|..', 10)).toStrictEqual([
+    "S..|...|..",
+    ".S.|...|..",
+    "..S|...|..",
+    "..S|...|..",
+    "..S|...|..",
+    "...S...*..",
+    "...*S..*..",
+    "...*.S.*..",
+    "...*..S*..",
+    "...*...S.."
+  ])
+})
+
+
+test("Test #03 - cyberReindeer('S.|.', 4)", () => {
+  expect(cyberReindeer('S.|.', 4)).toStrictEqual([
+    "S.|.",
+    ".S|.",
+    ".S|.",
+    ".S|."
+  ])
+})
+
+test("Test #04 - cyberReindeer('S.|.|.', 7)", () => {
+  expect(cyberReindeer('S.|.|.', 7)).toStrictEqual([
+    "S.|.|.",
+    ".S|.|.",
+    ".S|.|.",
+    ".S|.|.",
+    ".S|.|.",
+    "..S.*.",
+    "..*S*."
+  ])
+})
+
+test("Test #05 - cyberReindeer('S.|..', 6)", () => {
+  expect(cyberReindeer('S.|..', 6)).toStrictEqual([
+    "S.|..",
+    ".S|..",
+    ".S|..",
+    ".S|..",
+    ".S|..",
+    "..S.."
+  ])
+})
+
+test("Test #06 - cyberReindeer('S.|.|.|......|.||.........', 8)", () => {
+  expect(cyberReindeer('S.|.|.|......|.||.........', 8)).toStrictEqual([
+    "S.|.|.|......|.||.........",
+    ".S|.|.|......|.||.........",
+    ".S|.|.|......|.||.........",
+    ".S|.|.|......|.||.........",
+    ".S|.|.|......|.||.........",
+    "..S.*.*......*.**.........",
+    "..*S*.*......*.**.........",
+    "..*.S.*......*.**........."
+  ])
+})