From 254f90bca1855d7d09db8c18d26bc04e9e45703e Mon Sep 17 00:00:00 2001
From: Chiranjeev <6258860@gmail.com>
Date: Wed, 6 Oct 2021 14:03:27 +0530
Subject: [PATCH] added tests for Backtracking/AllCombinationsOfSizeK

---
 Backtracking/AllCombinationsOfSizeK.js          | 17 ++---------------
 .../tests/AllCombinationsOfSizeK.test.mjs       | 13 +++++++++++++
 2 files changed, 15 insertions(+), 15 deletions(-)
 create mode 100644 Backtracking/tests/AllCombinationsOfSizeK.test.mjs

diff --git a/Backtracking/AllCombinationsOfSizeK.js b/Backtracking/AllCombinationsOfSizeK.js
index 3415cf777..61a1d55c3 100644
--- a/Backtracking/AllCombinationsOfSizeK.js
+++ b/Backtracking/AllCombinationsOfSizeK.js
@@ -38,20 +38,7 @@ class Combinations {
       this.findCombinations(high, total - 1, i + 1)
       this.combinationArray.pop()
     }
-  };
+  }
 }
 
-/*
-  Driver Code
-
-  Test Case 1: n = 3, k = 2
-  Test Case 2: n = 4, k = 2
-*/
-
-console.log('\nFirst Test Case')
-const test1 = new Combinations(3, 2)
-test1.findCombinations()
-
-console.log('\nSecond Test Case')
-const test2 = new Combinations(4, 2)
-test2.findCombinations()
+export { Combinations }
diff --git a/Backtracking/tests/AllCombinationsOfSizeK.test.mjs b/Backtracking/tests/AllCombinationsOfSizeK.test.mjs
new file mode 100644
index 000000000..0fb3ec1b7
--- /dev/null
+++ b/Backtracking/tests/AllCombinationsOfSizeK.test.mjs
@@ -0,0 +1,13 @@
+import { Combinations } from '../AllCombinationsOfSizeK'
+
+describe('AllCombinationsOfSizeK', () => {
+  it('should return 3x2 matrix solution for n = 3 and k = 2', () => {
+    const test1 = new Combinations(3, 2)
+    expect(test1.findCombinations).toEqual([[1, 2], [1, 3], [2, 3]])
+  })
+
+  it('should return 6x2 matrix solution for n = 3 and k = 2', () => {
+    const test2 = new Combinations(4, 2)
+    expect(test2.findCombinations).toEqual([[1, 2], [1, 3], [1, 4], [2, 3], [2, 4], [3, 4]])
+  })
+})