fix: cleanup CoPrimeCheck (#1609)

Maths/test/CoPrimeCheck.test.js

@@ -0,0 +1,29 @@
+import { CoPrimeCheck } from '../CoPrimeCheck'
+
+describe('CoPrimeCheck', () => {
+  it.each([
+    [1, 1],
+    [1, 2],
+    [1, 3],
+    [1, 7],
+    [20, 21],
+    [5, 7],
+    [-5, -7]
+  ])('returns true for %j and %i', (inputA, inputB) => {
+    expect(CoPrimeCheck(inputA, inputB)).toBe(true)
+    expect(CoPrimeCheck(inputB, inputA)).toBe(true)
+  })
+
+  it.each([
+    [5, 15],
+    [13 * 17 * 19, 17 * 23 * 29]
+  ])('returns false for %j and %i', (inputA, inputB) => {
+    expect(CoPrimeCheck(inputA, inputB)).toBe(false)
+    expect(CoPrimeCheck(inputB, inputA)).toBe(false)
+  })
+
+  it('should throw when any of the inputs is not a number', () => {
+    expect(() => CoPrimeCheck('1', 2)).toThrowError()
+    expect(() => CoPrimeCheck(1, '2')).toThrowError()
+  })
+})