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Make an effort to understand these solutions and apply them to your Hands-On difficulties. (It is not advisable that copy and paste these solutions).
Course Path: Microservices/Construction/Java8 Qualis
Suggestion: Just Copy whole code from below and replace with existing code on hackerrank.
1. Welcome to Hands On – Junit
File Name – SolutionTest.java (under src->test folder)
package com.tcs.fresco;
import static junit. framework.Assert.*;
import java.util.HashMap;
import java.util.Map;
import org.junit.After;
import org.junit.Before;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
public class SolutionTest extends TestCase{
Map<Integer, String> customerTag = null;
int custId = 0;
Solution solution = new Solution();
@Before
public void setUp() throws Exception {
custId = 10511;
customerTag = new HashMap<Integer, String>();
}
//Write your test cases here
public void test() {
assertTrue( true );
}
@org.junit.Test
public void testValidUser(){
solution.saveCustomer(this.custId, "Tej");
assertTrue(solution.isCustomerExist("Tej"));
}
@org.junit.Test
public void testinValidUser(){
solution.saveCustomer(this.custId, "Tej");
assertFalse(solution.isCustomerExist("Tej1"));
}
@After
public void tearDown() throws Exception {
}
}
2.Hands-on Mockito
File Name- UserAuthenticatorTest.java
package com.tcs.fresco;
/* Write static mocks for Assert and Mockito classes. -Q1 */
import static org.junit.Assert.*;
import static org.mockito.Mockito.doThrow;
//Write import statements for Mockito classes.
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
public class UserAuthenticatorTest {
UserAuthenticator authenticator = new UserAuthenticator();
public static UserAuthenticatorInterface authenticatorMock;
@BeforeClass
public static void setUp() {
/* Create mock object using static mock configuration -Q2 */
//Write your code here
authenticatorMock = mock(UserAuthenticatorInterface.class);
}
@Before
public void setUpAuthenticator() {
authenticator.setUserAuthenticator(authenticatorMock);
}
/*Complete the test case with the expected exception -Q3 */
// Write your code here
@Test(expected = FailedToAuthenticateException.class)
public void testAuthenticate_InvalidCredentials() throws FailedToAuthenticateException {
String username = "User1";
String password = "wrong password";
String errorMessage = "Invalid credentials .Authentication Failed";
/*Throw exception using doThrow...when configuration - Q4*/
// Write your code here
doThrow(new FailedToAuthenticateException(errorMessage)).when(authenticatorMock).authenticateUser("User1", "wrong password");
authenticator.authenticateUser(username, password);
}
@Test
public void testAuthenticate_ValidCredentials() throws FailedToAuthenticateException {
String username = "User1";
String password = "Password";
/*Configure Returning True with when...thenReturn configuration on mock Object - Q5*/
//Write your code here
when(authenticatorMock.authenticateUser(username, password)).thenReturn(true);
assertTrue(authenticator.authenticateUser(username, password));
}
@Test(expected=FailedToAuthenticateException.class)
public void testAuthenticate_EmptyCredentials() throws FailedToAuthenticateException {
String username = "";
String password = "";
String errorMessage= "Credentials cannot be empty";
/*Configure Throwing exception using when...thenThrow configuration on mock Object - Q6*/
//Write your code here
when(authenticatorMock.authenticateUser(username, password)).thenThrow(new FailedToAuthenticateException(errorMessage));
authenticator.authenticateUser(username, password);
authenticator.authenticateUser(username, password);
}
@Test()
public void dummytest(){
assertEquals(1,1);
}
}
3.MockMvc: Hands-on
No need to write code just submit and it will clear.
4.Checkstyle: Hands-on
No need to write code just submit and it will clear.
5.FindBugs: Hands-on
No need to write code just submit and it will clear.
6.JaCoCo: Hands-on
No need to write code just submit and it will clear.