BAEL-1584 : Finding an element in list (#4067)
* BAEL-1584 : Find an Element in Given List
This commit is contained in:
Shubhra Srivastava
committed by
Josh Cummings
Josh Cummings
parent
47a7aaae5d
commit
b559157482
+158
@@ -0,0 +1,158 @@
|
||||
package com.baeldung.findanelement;
|
||||
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
|
||||
import org.junit.Test;
|
||||
|
||||
public class FindACustomerInGivenListTest {
|
||||
|
||||
private static List<Customer> customers = new ArrayList<>();
|
||||
|
||||
static {
|
||||
customers.add(new Customer(1, "Jack"));
|
||||
customers.add(new Customer(2, "James"));
|
||||
customers.add(new Customer(3, "Sam"));
|
||||
}
|
||||
|
||||
private static FindACustomerInGivenList findACustomerInGivenList = new FindACustomerInGivenList();
|
||||
|
||||
@Test
|
||||
public void givenAnIndex_whenFoundUsingGivenIndex_thenReturnCustomer() {
|
||||
Customer customer = findACustomerInGivenList.findUsingGivenIndex(0, customers);
|
||||
|
||||
assertEquals(1, customer.getId());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenAnIndex_whenNotFoundUsingGivenIndex_thenReturnNull() {
|
||||
Customer customer = findACustomerInGivenList.findUsingGivenIndex(5, customers);
|
||||
|
||||
assertNull(customer);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenACustomer_whenFoundUsingContains_thenReturnTrue() {
|
||||
Customer james = new Customer(2, "James");
|
||||
boolean isJamesPresent = findACustomerInGivenList.findUsingContains(james, customers);
|
||||
|
||||
assertEquals(true, isJamesPresent);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenACustomer_whenNotFoundUsingContains_thenReturnFalse() {
|
||||
Customer john = new Customer(5, "John");
|
||||
boolean isJohnPresent = findACustomerInGivenList.findUsingContains(john, customers);
|
||||
|
||||
assertEquals(false, isJohnPresent);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenACustomer_whenFoundUsingIndexOf_thenReturnItsIndex() {
|
||||
Customer james = new Customer(2, "James");
|
||||
int indexOfJames = findACustomerInGivenList.findUsingIndexOf(james, customers);
|
||||
|
||||
assertEquals(1, indexOfJames);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenACustomer_whenNotFoundUsingIndexOf_thenReturnMinus1() {
|
||||
Customer john = new Customer(5, "John");
|
||||
int indexOfJohn = findACustomerInGivenList.findUsingIndexOf(john, customers);
|
||||
|
||||
assertEquals(-1, indexOfJohn);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameFoundUsingIterator_thenReturnCustomer() {
|
||||
Customer james = findACustomerInGivenList.findUsingIterator("James", customers);
|
||||
|
||||
assertEquals("James", james.getName());
|
||||
assertEquals(2, james.getId());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameNotFoundUsingIterator_thenReturnNull() {
|
||||
Customer john = findACustomerInGivenList.findUsingIterator("John", customers);
|
||||
|
||||
assertNull(john);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameFoundUsingEnhancedFor_thenReturnCustomer() {
|
||||
Customer james = findACustomerInGivenList.findUsingEnhancedForLoop("James", customers);
|
||||
|
||||
assertEquals("James", james.getName());
|
||||
assertEquals(2, james.getId());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameNotFoundUsingEnhancedFor_thenReturnNull() {
|
||||
Customer john = findACustomerInGivenList.findUsingEnhancedForLoop("John", customers);
|
||||
|
||||
assertNull(john);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameFoundUsingStream_thenReturnCustomer() {
|
||||
Customer james = findACustomerInGivenList.findUsingStream("James", customers);
|
||||
|
||||
assertEquals("James", james.getName());
|
||||
assertEquals(2, james.getId());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameNotFoundUsingStream_thenReturnNull() {
|
||||
Customer john = findACustomerInGivenList.findUsingStream("John", customers);
|
||||
|
||||
assertNull(john);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameFoundUsingParallelStream_thenReturnCustomer() {
|
||||
Customer james = findACustomerInGivenList.findUsingParallelStream("James", customers);
|
||||
|
||||
assertEquals("James", james.getName());
|
||||
assertEquals(2, james.getId());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameNotFoundUsingParallelStream_thenReturnNull() {
|
||||
Customer john = findACustomerInGivenList.findUsingParallelStream("John", customers);
|
||||
|
||||
assertNull(john);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameFoundUsingApacheCommon_thenReturnCustomer() {
|
||||
Customer james = findACustomerInGivenList.findUsingApacheCommon("James", customers);
|
||||
|
||||
assertEquals("James", james.getName());
|
||||
assertEquals(2, james.getId());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameNotFoundUsingApacheCommon_thenReturnNull() {
|
||||
Customer john = findACustomerInGivenList.findUsingApacheCommon("John", customers);
|
||||
|
||||
assertNull(john);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameFoundUsingGuava_thenReturnCustomer() {
|
||||
Customer james = findACustomerInGivenList.findUsingGuava("James", customers);
|
||||
|
||||
assertEquals("James", james.getName());
|
||||
assertEquals(2, james.getId());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenName_whenCustomerWithNameNotFoundUsingGuava_thenReturnNull() {
|
||||
Customer john = findACustomerInGivenList.findUsingGuava("John", customers);
|
||||
|
||||
assertNull(john);
|
||||
}
|
||||
|
||||
}
|
||||
@@ -1,116 +0,0 @@
|
||||
package com.baeldung.findanelement;
|
||||
|
||||
import static org.junit.Assert.assertNull;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
import org.junit.Test;
|
||||
|
||||
public class FindAnElementTest {
|
||||
|
||||
private static List<Integer> scores = new ArrayList<>();
|
||||
static {
|
||||
scores.add(0);
|
||||
scores.add(1);
|
||||
scores.add(2);
|
||||
}
|
||||
|
||||
private static FindElementInAList<Integer> findElementInAList = new FindElementInAList<>();
|
||||
|
||||
@Test
|
||||
public void givenElement_whenFoundUsingIndexOf_thenReturnElement() {
|
||||
Integer scoreToFind = 1;
|
||||
Integer score = findElementInAList.findUsingIndexOf(scoreToFind, scores);
|
||||
assertTrue(score.equals(scoreToFind));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenNotFoundUsingListIterator_thenReturnNull() {
|
||||
boolean found = findElementInAList.findUsingListIterator(5, scores);
|
||||
assertTrue(!found);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenFoundListIterator_thenReturnElement() {
|
||||
Integer scoreToFind = 1;
|
||||
boolean found = findElementInAList.findUsingListIterator(scoreToFind, scores);
|
||||
assertTrue(found);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenNotFoundUsingIndexOf_thenReturnNull() {
|
||||
Integer score = findElementInAList.findUsingIndexOf(5, scores);
|
||||
assertNull(score);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenFoundUsingEnhancedForLoop_thenReturnElement() {
|
||||
Integer scoreToFind = 1;
|
||||
boolean found = findElementInAList.findUsingEnhancedForLoop(scoreToFind, scores);
|
||||
assertTrue(found);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenNotFoundUsingEnhancedForLoop_thenReturnNull() {
|
||||
Integer scoreToFind = 5;
|
||||
boolean found = findElementInAList.findUsingEnhancedForLoop(scoreToFind, scores);
|
||||
assertTrue(!found);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenFoundUsingStream_thenReturnElement() {
|
||||
Integer scoreToFind = 1;
|
||||
Integer score = findElementInAList.findUsingStream(scoreToFind, scores);
|
||||
assertTrue(score.equals(scoreToFind));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenNotFoundUsingStream_thenReturnNull() {
|
||||
Integer scoreToFind = 5;
|
||||
Integer score = findElementInAList.findUsingStream(scoreToFind, scores);
|
||||
assertNull(score);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenFoundUsingParallelStream_thenReturnElement() {
|
||||
Integer scoreToFind = 1;
|
||||
Integer score = findElementInAList.findUsingParallelStream(scoreToFind, scores);
|
||||
assertTrue(score.equals(scoreToFind));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenNotFoundUsingParallelStream_thenReturnNull() {
|
||||
Integer scoreToFind = 5;
|
||||
Integer score = findElementInAList.findUsingParallelStream(scoreToFind, scores);
|
||||
assertNull(score);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenFoundUsingGuava_thenReturnElement() {
|
||||
Integer scoreToFind = 1;
|
||||
Integer score = findElementInAList.findUsingGuava(scoreToFind, scores);
|
||||
assertTrue(score.equals(scoreToFind));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenNotFoundUsingGuava_thenReturnNull() {
|
||||
Integer scoreToFind = 5;
|
||||
Integer score = findElementInAList.findUsingGuava(scoreToFind, scores);
|
||||
assertNull(score);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenFoundUsingApacheCommons_thenReturnElement() {
|
||||
Integer scoreToFind = 1;
|
||||
Integer score = findElementInAList.findUsingApacheCommon(scoreToFind, scores);
|
||||
assertTrue(score.equals(scoreToFind));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenElement_whenNotFoundUsingApacheCommons_thenReturnNull() {
|
||||
Integer scoreToFind = 5;
|
||||
Integer score = findElementInAList.findUsingApacheCommon(scoreToFind, scores);
|
||||
assertNull(score);
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user