Notes

public class CT {
public int plus(int a,int b)
{
return a+b;
}
public int minus(int a,int b)
{
return a-b;
}
public String dream()
{
return null;
}
public String sky()
{
return "Sky has the limit";
}
public boolean even(int n)
{
return n%2==0;
}
public boolean odd(int n)
{
return n%2!=0;
}
public int[]array1(int[] x){

return x.clone();
}
public int divide(int a,int b)
{
if(b==0)
{
throw new ArithmeticException("Any number cant divide by zero");
}
return a/b;
}

}


import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

import java.time.Duration;

import static org.junit.jupiter.api.Assertions.*;

class CTTest {
CT a = new CT();

@Test
void plus() {
assertEquals(15,a.plus(10,5));
}

@Test
void minus() {
assertNotEquals(10,a.minus(10,10));
}

@Test
void dream() {
assertNull(a.dream());
}
@BeforeAll
static void setUp()
{
System.out.println("Running @BeforeAll setup...");
}
@Test
void sky() {
assertNotNull(a.sky());
}

@Test
void even() {
assertTrue(a.even(4));
}

@Test
void odd() {
assertFalse(a.odd(2));
}

@Test
void array1() {
int[] array2 = {1,2,3,4};
assertArrayEquals(array2,a.array1(array2));
assertTimeout(Duration.ofMillis(1),()->a.plus(5,6));
}


@Test
void divide() {
assertThrows(ArithmeticException.class,()->{
a.divide(5,0);
});
}
}



import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvFileSource;
import org.junit.jupiter.params.provider.CsvSource;
import org.junit.jupiter.params.provider.MethodSource;
import org.junit.jupiter.params.provider.ValueSource;

import java.util.ArrayList;
import java.util.List;

import static org.junit.jupiter.api.Assertions.*;

class NewTopicTest {
@ParameterizedTest
@ValueSource(ints ={1,2,3,4,5})
void testIsPositive(int number)
{
assertTrue(number>0);
}

@ParameterizedTest
@ValueSource(strings = {"Kazi","Halim"})
void testNotEmpty(String text)
{
assertNotNull(text);
assertFalse(text.isEmpty());
}
@ParameterizedTest
@CsvSource({
"2, 3, 5",
"3, 5, 8",
"4, 6, 10"
})

void testAddition(int a,int b,int sum)
{
assertEquals(sum,a+b);
}

@ParameterizedTest
@CsvSource({"apple","orrange","mango"})

void testIsNotEmpty(String fruit)
{
assertNotNull(fruit);
assertFalse(fruit.isEmpty());
}

@ParameterizedTest
@CsvSource({
"hello, world, [email protected]",
"java, test, [email protected]",
"unit, test, [email protected]"
})

void testUserDetail(String fname, String lname, String email)
{
assertNotNull(fname);
assertNotNull(lname);
assertTrue(email.contains("@"));
}


@ParameterizedTest
@CsvFileSource(resources = "/data.csv",numLinesToSkip = 0)

void testAdditionFromFile(int a,int b,int sum)
{
assertEquals(sum,a+b);
}
@ParameterizedTest
@CsvFileSource(resources = "/data.csv",numLinesToSkip = 3)

void testUserDetailFromFile(String fname, String lname, String email)
{
assertNotNull(fname);
assertNotNull(lname);
assertTrue(email.contains("@"));
}

static List<List<Integer>> provideNumbers() {
List<List<Integer>> data = new ArrayList<>();
data.add(List.of(2, 3, 5));
data.add(List.of(3, 5, 8));
data.add(List.of(4, 6, 10));
return data;
}

@ParameterizedTest
@MethodSource("provideNumbers")
void testSummation(int a, int b, int sum) {
assertEquals(sum, a + b);
}

static List<List<String>> provideStrings() {
List<List<String>> data = new ArrayList<>();
data.add(List.of("Hello", "World", "HelloWorld"));
data.add(List.of("Java", "Programming", "JavaProgramming"));
data.add(List.of("Unit", "Test", "UnitTest"));
return data;
}

@ParameterizedTest
@MethodSource("provideStrings")
void testConcatenation(String str1, String str2, String result) {
assertEquals(result, str1 + str2);
}




}