From 7f6a53ad4a5fd2a4ce0eb60df1f10868502422a1 Mon Sep 17 00:00:00 2001
From: Eric Lavault <39483232+lvlte@users.noreply.github.com>
Date: Sat, 9 Oct 2021 15:05:52 +0200
Subject: [PATCH] KnightTour : convert live code example to Jest test (log
 remaining is within a print method).

---
 Backtracking/KnightTour.js            | 13 +------------
 Backtracking/tests/KnightTour.test.js | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 12 deletions(-)
 create mode 100644 Backtracking/tests/KnightTour.test.js

diff --git a/Backtracking/KnightTour.js b/Backtracking/KnightTour.js
index 5c7637a9e..a2ffc0d52 100644
--- a/Backtracking/KnightTour.js
+++ b/Backtracking/KnightTour.js
@@ -64,15 +64,4 @@ class OpenKnightTour {
   }
 }
 
-function main () {
-  const board = new OpenKnightTour(5)
-
-  board.printBoard()
-  console.log('\n')
-
-  board.solve()
-
-  board.printBoard()
-}
-
-main()
+export { OpenKnightTour }
diff --git a/Backtracking/tests/KnightTour.test.js b/Backtracking/tests/KnightTour.test.js
new file mode 100644
index 000000000..3e7bde565
--- /dev/null
+++ b/Backtracking/tests/KnightTour.test.js
@@ -0,0 +1,24 @@
+import { OpenKnightTour } from '../KnightTour'
+
+describe('OpenKnightTour', () => {
+  it('OpenKnightTour(5)', () => {
+    const KT = new OpenKnightTour(5)
+    expect(KT.board).toEqual([
+      [ 0, 0, 0, 0, 0 ],
+      [ 0, 0, 0, 0, 0 ],
+      [ 0, 0, 0, 0, 0 ],
+      [ 0, 0, 0, 0, 0 ],
+      [ 0, 0, 0, 0, 0 ]
+    ])
+
+    KT.solve()
+    expect(KT.board).toEqual([
+      [ 19, 4, 15, 10, 25 ],
+      [ 14, 9, 18, 5, 16 ],
+      [ 1, 20, 3, 24, 11 ],
+      [ 8, 13, 22, 17, 6 ],
+      [ 21, 2, 7, 12, 23 ]
+    ])
+  })
+
+})