Add primality tests.

Author: trekhleb

src/algorithms/math/primality-tests/__test__/primalityTest.js

@@ -1,5 +1,29 @@
 import trialDivision from '../trialDivision';
-import primalityTest from './primalityTest';
+
+/**
+ * @param {function(n: number)} testFunction
+ */
+function primalityTest(testFunction) {
+  expect(testFunction(1)).toBeTruthy();
+  expect(testFunction(2)).toBeTruthy();
+  expect(testFunction(3)).toBeTruthy();
+  expect(testFunction(5)).toBeTruthy();
+  expect(testFunction(11)).toBeTruthy();
+  expect(testFunction(191)).toBeTruthy();
+  expect(testFunction(191)).toBeTruthy();
+  expect(testFunction(199)).toBeTruthy();
+
+  expect(testFunction(-1)).toBeFalsy();
+  expect(testFunction(0)).toBeFalsy();
+  expect(testFunction(4)).toBeFalsy();
+  expect(testFunction(6)).toBeFalsy();
+  expect(testFunction(12)).toBeFalsy();
+  expect(testFunction(14)).toBeFalsy();
+  expect(testFunction(25)).toBeFalsy();
+  expect(testFunction(192)).toBeFalsy();
+  expect(testFunction(200)).toBeFalsy();
+  expect(testFunction(400)).toBeFalsy();
+}
 
 describe('trialDivision', () => {
   it('should detect prime numbers', () => {