From f055b931418421156eff9f33f84bec454b9da283 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ph=E1=BA=A1m=20Ng=E1=BB=8Dc=20=C3=81nh?=
 <ngocanhpham197@gmail.com>
Date: Mon, 23 May 2022 00:20:27 +0700
Subject: [PATCH 1/2] add GCDTest for function gcd(int num1, int num2)

---
 .../java/com/thealgorithms/maths/GCDTest.java | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 src/test/java/com/thealgorithms/maths/GCDTest.java

diff --git a/src/test/java/com/thealgorithms/maths/GCDTest.java b/src/test/java/com/thealgorithms/maths/GCDTest.java
new file mode 100644
index 000000000000..3f4d9393465d
--- /dev/null
+++ b/src/test/java/com/thealgorithms/maths/GCDTest.java
@@ -0,0 +1,41 @@
+package com.thealgorithms.maths;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class GCDTest {
+    @Test
+    void test1() {
+        Assertions.assertThrows(ArithmeticException.class, () -> GCD.gcd(-1,0));
+    }
+
+    @Test
+    void test2() {
+        Assertions.assertThrows(ArithmeticException.class, () -> GCD.gcd(10, -2));
+    }
+
+    @Test
+    void test3() {
+        Assertions.assertThrows(ArithmeticException.class, () -> GCD.gcd(-5, -3));
+    }
+
+    @Test
+    void test4() {
+        Assertions.assertEquals(GCD.gcd(0, 2), 2);
+    }
+
+    @Test
+    void test5() {
+        Assertions.assertEquals(GCD.gcd(10, 0), 10);
+    }
+
+    @Test
+    void test6() {
+        Assertions.assertEquals(GCD.gcd(1, 0), 1);
+    }
+
+    @Test
+    void test7() {
+        Assertions.assertEquals(GCD.gcd(9, 6), 3);
+    }
+}

From f4caf439e0e85e34639af72dbeda98921fbf45b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ph=E1=BA=A1m=20Ng=E1=BB=8Dc=20=C3=81nh?=
 <ngocanhpham197@gmail.com>
Date: Mon, 23 May 2022 11:15:35 +0700
Subject: [PATCH 2/2] add PrimeCheckTest for function isPrime(int n)

---
 .../thealgorithms/maths/PrimeCheckTest.java   | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 src/test/java/com/thealgorithms/maths/PrimeCheckTest.java

diff --git a/src/test/java/com/thealgorithms/maths/PrimeCheckTest.java b/src/test/java/com/thealgorithms/maths/PrimeCheckTest.java
new file mode 100644
index 000000000000..59fe78525346
--- /dev/null
+++ b/src/test/java/com/thealgorithms/maths/PrimeCheckTest.java
@@ -0,0 +1,41 @@
+package com.thealgorithms.maths;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class PrimeCheckTest {
+    @Test
+    void test1() {
+        Assertions.assertTrue(PrimeCheck.isPrime(2));
+    }
+
+    @Test
+    void test2() {
+        Assertions.assertFalse(PrimeCheck.isPrime(-1));
+    }
+
+    @Test
+    void test3() {
+        Assertions.assertFalse(PrimeCheck.isPrime(4));
+    }
+
+    @Test
+    void test4() {
+        Assertions.assertTrue(PrimeCheck.isPrime(5));
+    }
+
+    @Test
+    void test5() {
+        Assertions.assertFalse(PrimeCheck.isPrime(15));
+    }
+
+    @Test
+    void test6() {
+        Assertions.assertTrue(PrimeCheck.isPrime(11));
+    }
+
+    @Test
+    void test7() {
+        Assertions.assertFalse(PrimeCheck.isPrime(49));
+    }
+}