diff --git a/Hashes/tests/SHA256.test.js b/Hashes/tests/SHA256.test.js
new file mode 100644
index 0000000000..1ffb236cea
--- /dev/null
+++ b/Hashes/tests/SHA256.test.js
@@ -0,0 +1,27 @@
+import { describe, test } from 'vitest'
+import { SHA256 } from '../SHA256'
+
+describe('Testing SHA256 function', () => {
+  it.each([
+    ['', 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855'],
+    [
+      'The quick brown fox jumps over the lazy dog',
+      'd7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592'
+    ],
+    [
+      'The quick brown fox jumps over the lazy cog',
+      'e4c4d8f3bf76b692de791a173e05321150f7a345b46484fe427f6acc7ecc81be'
+    ],
+    [
+      'This was added by vil02 on 01.02.2024. Have a nice day!',
+      '476025d91db754ab6ac0c124367afd7c108d041b2f497006a214d5035769ed5d'
+    ],
+    [
+      '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789',
+      '14582b3f153941891dca966b036a5b1de65fa3b7a2540095a31614da1de0feaf'
+    ],
+    ['a', 'ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb']
+  ])('check with %j', (input, expected) => {
+    expect(SHA256(input)).toBe(expected)
+  })
+})
diff --git a/Maths/PascalTriangle.js b/Maths/PascalTriangle.js
index 868e36fcac..71d782cd61 100644
--- a/Maths/PascalTriangle.js
+++ b/Maths/PascalTriangle.js
@@ -17,8 +17,6 @@ const generate = (numRows) => {
     return []
   } else if (numRows === 1) {
     return [[1]]
-  } else if (numRows === 2) {
-    return [[1], [1, 1]]
   } else {
     for (let i = 2; i < numRows; i++) {
       addRow(triangle)
diff --git a/Maths/test/PascalTriangle.test.js b/Maths/test/PascalTriangle.test.js
index 314d0f3211..65c736f14f 100644
--- a/Maths/test/PascalTriangle.test.js
+++ b/Maths/test/PascalTriangle.test.js
@@ -1,20 +1,20 @@
+import { expect } from 'vitest'
 import { generate } from '../PascalTriangle'
 
 describe('Pascals Triangle', () => {
-  it('should have the the same length as the number', () => {
-    const pascalsTriangle = generate(5)
-    expect(pascalsTriangle.length).toEqual(5)
-  })
-  it('should have same length as its index in the array', () => {
-    const pascalsTriangle = generate(5)
+  it.each([
+    [0, []],
+    [1, [[1]]],
+    [2, [[1], [1, 1]]],
+    [3, [[1], [1, 1], [1, 2, 1]]],
+    [4, [[1], [1, 1], [1, 2, 1], [1, 3, 3, 1]]],
+    [5, [[1], [1, 1], [1, 2, 1], [1, 3, 3, 1]], [1, 4, 6, 4, 1]]
+  ])('check with %j', (input, expected) => {
+    const pascalsTriangle = generate(input)
+    expect(pascalsTriangle.length).toEqual(input)
     pascalsTriangle.forEach((arr, index) => {
       expect(arr.length).toEqual(index + 1)
     })
-  })
-  it('should return an array of arrays', () => {
-    const pascalsTriangle = generate(3)
-    expect(pascalsTriangle).toEqual(
-      expect.arrayContaining([[1], [1, 1], [1, 2, 1]])
-    )
+    expect(pascalsTriangle).toEqual(expect.arrayContaining(expected))
   })
 })
diff --git a/Maths/test/SumOfGeometricProgression.test.js b/Maths/test/SumOfGeometricProgression.test.js
index f459835232..0edf2b9f8e 100644
--- a/Maths/test/SumOfGeometricProgression.test.js
+++ b/Maths/test/SumOfGeometricProgression.test.js
@@ -8,4 +8,8 @@ describe('Sum Of Geometric Progression', () => {
   it('should return the sum of an infinite GP', () => {
     expect(sumOfGeometricProgression(2, 0.5, Infinity)).toBe(4)
   })
+
+  it('should throw when series diverges', () => {
+    expect(() => sumOfGeometricProgression(1, 1, Infinity)).toThrowError()
+  })
 })