Fixes #620

Backtracking/tests/NQueen.test.js

@@ -0,0 +1,15 @@
+import { NQueen } from '../NQueen'
+
+describe('NQueen', () => {
+  it('should return 2 solutions for 4x4 size board', () => {
+    const _4Queen = new NQueen(4)
+    _4Queen.solve()
+    expect(_4Queen.solutionCount).toEqual(2)
+  })
+
+  it('should return 92 solutions for 8x8 size board', () => {
+    const _8Queen = new NQueen(8)
+    _8Queen.solve()
+    expect(_8Queen.solutionCount).toEqual(92)
+  })
+})