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How to write JUnit test code in Java for the for Primecheck function ?

—

by

anagendrakumar2020

in Java, JUnit5, Prime number

This is the JUnit 5 solution to cover all kinds of inputs provided to PrimeCheck function. This Unit test executes tests for the ‘PrimeCheck’ function available in the class ‘PrimeJ8’.

package pack1;

import org.junit.Assert;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

class PrimeJ8Junit5 {
	
	PrimeChk_Using_Corelogic PUcore;
	PrimeChk_Using_Predicates PUpredicate;
	PrimeChk_Using_LambdaExpression PrimeUL;
	PrimeChk_Using_Stream PrimeUS;
	
	@BeforeEach
	void setUp() throws Exception {
		PUcore = new PrimeChk_Using_Corelogic();
		PUpredicate = new PrimeChk_Using_Predicates();
		PrimeUL = new PrimeChk_Using_LambdaExpression();
		PrimeUS = new PrimeChk_Using_Stream();
	}

	@AfterEach
	void tearDown() throws Exception {
	}

	@Test
	@DisplayName("Positive inputs should work")   
	void test1() {
		Assert.assertTrue(PUcore.PrimeCheck(17));
		Assert.assertTrue(PUpredicate.PrimeCheck(19));
		Assert.assertTrue(PrimeUL.PrimeCheck(29));
		Assert.assertTrue(PrimeUS.PrimeCheck(31));
	}
	
	@Test
	@DisplayName("Negative inputs should work")   
	void test2() {
		Assert.assertFalse(PUcore.PrimeCheck(27));
		Assert.assertFalse(PUpredicate.PrimeCheck(999));
		Assert.assertFalse(PrimeUL.PrimeCheck(455));
		Assert.assertFalse(PrimeUS.PrimeCheck(10000));
	}
	
	@Test
	@DisplayName("null inputs - Special case")   
	void test3() {
		Assert.assertFalse(PUcore.PrimeCheck(null));
		Assert.assertFalse(PUpredicate.PrimeCheck(null));
		Assert.assertFalse(PrimeUL.PrimeCheck(null));
		Assert.assertFalse(PrimeUS.PrimeCheck(null));
	}

	@Test
	@DisplayName("Number 0 as input - Special case")   
	void test4() {
		Assert.assertFalse(PUcore.PrimeCheck(0));
		Assert.assertFalse(PUpredicate.PrimeCheck(0));
		Assert.assertFalse(PrimeUL.PrimeCheck(0));
		Assert.assertFalse(PrimeUS.PrimeCheck(0));
	}
}

Output:
Checking whether this number '17' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Corelogic PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Corelogic'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '17' is Prime


Checking whether this number '19' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Predicates PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Predicates'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '19' is Prime


Checking whether this number '29' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_LambdaExpression PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_LambdaExpression'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '29' is Prime


Checking whether this number '31' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Stream PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Stream'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '31' is Prime


Checking whether this number '27' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Corelogic PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Corelogic'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '27' is not Prime


Checking whether this number '999' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Predicates PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Predicates'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '999' is not Prime


Checking whether this number '455' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_LambdaExpression PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_LambdaExpression'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '455' is not Prime


Checking whether this number '10000' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Stream PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Stream'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '10000' is not Prime


Checking whether this number 'null' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Corelogic PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Corelogic'
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Corelogic PrimeCheck
INFO: The input is validated Successfully
Checking whether this number 'null' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Corelogic PrimeCheck
WARNING: The given Input is 'null'

Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Predicates PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Predicates'
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Predicates PrimeCheck
INFO: The input is validated Successfully
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Predicates PrimeCheck
WARNING: The given Input is 'null'

Checking whether this number 'null' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_LambdaExpression PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_LambdaExpression'
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_LambdaExpression PrimeCheck
INFO: The input is validated Successfully
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_LambdaExpression PrimeCheck
WARNING: The given Input is 'null'

Checking whether this number 'null' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Stream PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Stream'
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Stream PrimeCheck
INFO: The input is validated Successfully
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Stream PrimeCheck
WARNING: The given Input is 'null'

Checking whether this number '0' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Corelogic PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Corelogic'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '0' is  neither a Prime nor a Composite


Checking whether this number '0' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Predicates PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Predicates'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '0' is  neither a Prime nor a Composite


Checking whether this number '0' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_LambdaExpression PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_LambdaExpression'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '0' is  neither a Prime nor a Composite


Checking whether this number '0' is Prime or not
Jan 08, 2023 6:54:13 AM pack1.PrimeChk_Using_Stream PrimeCheck
INFO: This method 'PrimeCheck' called from the Class 'pack1.PrimeJ8Junit5'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: This method 'validateInputs' called from the Class 'pack1.PrimeChk_Using_Stream'
Jan 08, 2023 6:54:13 AM pack1.PrimeInputs validateInputs
INFO: The input is validated Successfully
The Number '0' is  neither a Prime nor a Composite

@AfterEach @BeforeEach @DisplayName @Test AfterEach Assert Assert.assertFalse Assert.assertTrue assertEquals Assertions BeforeEach DisplayName exception IZ0-808 IZ0-809 IZ0-810 Java certification Junit JUnit5 Jupiter OCA Java Programmer 1 OCA Java Programmer 2 OCA Java SE8 OCP Java SE8 Oracle Certified Associate Java SE8 Oracle Certified Professional Java SE8 setUp() Sun Certified Java Professional tearDown() Upgrade Java SE7 validations

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