calculator tests

src/test/java/cz/cvut/fel/ts1/homework2/TestCalculator.java

 package cz.cvut.fel.ts1.homework2;
 
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
 public class TestCalculator {
     @Test
     public void testAdd() {
-        assert Calculator.add(1, 2) == 3;
-        assert Calculator.add(0, 0) == 0;
-        assert Calculator.add(-1, 1) == 0;
+        Assertions.assertEquals(3, Calculator.add(1, 2));
+        Assertions.assertEquals(0, Calculator.add(0, 0));
+        Assertions.assertEquals(0, Calculator.add(-1, 1));
     }
     @Test
     public void testSubtract() {
-        assert Calculator.subtract(1, 2) == -1;
-        assert Calculator.subtract(0, 0) == 0;
-        assert Calculator.subtract(-1, 1) == -2;
+        Assertions.assertEquals(-1, Calculator.subtract(1, 2));
+        Assertions.assertEquals(0, Calculator.subtract(0, 0));
     }
     @Test
     public void testMultiply() {
-        assert Calculator.multiply(1, 2) == 2;
-        assert Calculator.multiply(0, 0) == 0;
-        assert Calculator.multiply(-1, 1) == -1;
+        Assertions.assertEquals(2, Calculator.multiply(1, 2));
+        Assertions.assertEquals(0, Calculator.multiply(0, 0));
+        Assertions.assertEquals(-1, Calculator.multiply(-1, 1));
     }
     @Test
     public void testDivide() {
-        assert Calculator.divide(1, 2) == 0;
-        assert Calculator.divide(0, 1) == 0;
-        assert Calculator.divide(-1, 1) == -1;
+        Assertions.assertEquals(2, Calculator.divide(4, 2));
+        Assertions.assertEquals(0, Calculator.divide(0, 1));
+        Assertions.assertEquals(-1, Calculator.divide(-1, 1));
     }
     @Test
     public void testDivideByZero() {
-        try {
-            assert Calculator.divide(1, 0) == 0;
-        } catch (IllegalArgumentException e) {
-            assert true;
-        }
+        assertThrows(IllegalArgumentException.class, () -> Calculator.divide(1, 0));
     }
 
 }