How to use extracting method of org.assertj.core.api.AbstractIterableAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractIterableAssert.extracting

Source:org.assertj.core.api.iterable.IterableAssert_extracting_Test-should_allow_assertions_on_field_values_extracted_from_given_iterable.java

...25import static org.assertj.core.api.Assertions.tuple;26import static org.assertj.core.test.ExpectedException.none;27import static org.assertj.core.util.Lists.newArrayList;28/**29 * Tests for <code>{@link AbstractIterableAssert#extracting(String)}</code> and30 * <code>{@link AbstractIterableAssert#extracting(String...)}</code>.31 * 32 * @author Joel Costigliola33 * @author Mateusz Haligowski34 */35public class IterableAssert_extracting_Test {36  private Employee yoda;37  private Employee luke;38  private Iterable<Employee> employees;39  private static final Extractor<Employee, String> firstName = new Extractor<Employee, String>() {40    @Override41    public String extract(Employee input) {42      return input.getName().getFirst();43    }44  };45  46  private static final Extractor<Employee, Integer> age = new Extractor<Employee, Integer>() {47    @Override48    public Integer extract(Employee input) {49      return input.getAge();50    }51  };52  53  @Before54  public void setUp() {55    yoda = new Employee(1L, new Name("Yoda"), 800);56    luke = new Employee(2L, new Name("Luke", "Skywalker"), 26);57    employees = newArrayList(yoda, luke);58  }59  @Rule60  public ExpectedException thrown = none();61  @Test public void should_allow_assertions_on_field_values_extracted_from_given_iterable() throws Exception{assertThat(employees).extracting("id").as("extract field").containsOnly(1L,2L);assertThat(employees).extracting("surname").as("null field").containsNull();assertThat(employees).extracting("surname.first").as("null nested field").containsNull();yoda.surname=new Name();assertThat(employees).extracting("surname.first").as("not null field but null nested field").containsNull();yoda.surname=new Name("Master");assertThat(employees).extracting("surname.first").as("nested field").containsOnly("Master",null);assertThat(employees).extracting("surname",Name.class).as("extract field specifiying the extracted type").containsOnly(new Name("Master"),null);}62  63}...

Source:org.assertj.core.api.iterable.IterableAssert_extracting_Test-should_allow_extracting_single_values_using_extractor.java

...25import static org.assertj.core.api.Assertions.tuple;26import static org.assertj.core.test.ExpectedException.none;27import static org.assertj.core.util.Lists.newArrayList;28/**29 * Tests for <code>{@link AbstractIterableAssert#extracting(String)}</code> and30 * <code>{@link AbstractIterableAssert#extracting(String...)}</code>.31 * 32 * @author Joel Costigliola33 * @author Mateusz Haligowski34 */35public class IterableAssert_extracting_Test {36  private Employee yoda;37  private Employee luke;38  private Iterable<Employee> employees;39  private static final Extractor<Employee, String> firstName = new Extractor<Employee, String>() {40    @Override41    public String extract(Employee input) {42      return input.getName().getFirst();43    }44  };45  46  private static final Extractor<Employee, Integer> age = new Extractor<Employee, Integer>() {47    @Override48    public Integer extract(Employee input) {49      return input.getAge();50    }51  };52  53  @Before54  public void setUp() {55    yoda = new Employee(1L, new Name("Yoda"), 800);56    luke = new Employee(2L, new Name("Luke", "Skywalker"), 26);57    employees = newArrayList(yoda, luke);58  }59  @Rule60  public ExpectedException thrown = none();61  @Test public void should_allow_extracting_single_values_using_extractor() throws Exception{assertThat(employees).extracting(firstName).containsOnly("Yoda","Luke");assertThat(employees).extracting(age).containsOnly(26,800);}62  63}...

Source:org.assertj.core.api.iterable.IterableAssert_extractingResultOf_Test-should_allow_assertions_on_method_invocation_result_extracted_from_given_iterable.java

...23import org.junit.Test;24/**25 * Tests for: 26 * <ul>27 *  <li><code>{@link AbstractIterableAssert#extractingResultOf(String)}</code>,28 *  <li><code>{@link AbstractIterableAssert#extractingResultOf(String, Class)}</code>.29 * </ul>30 * 31 * @author MichaÅ Piotrkowski32 */33public class IterableAssert_extractingResultOf_Test {34  private static FluentJedi yoda;35  private static FluentJedi vader;36  private static Iterable<FluentJedi> jedis;37  @BeforeClass38  public static void setUpOnce() {39    yoda = new FluentJedi(new Name("Yoda"), 800, false);40    vader = new FluentJedi(new Name("Darth Vader"), 50 ,true);41    jedis = newArrayList(yoda, vader);42  }43  @Rule44  public ExpectedException thrown = none();45  @Test public void should_allow_assertions_on_method_invocation_result_extracted_from_given_iterable() throws Exception{assertThat(jedis).extractingResultOf("age").containsOnly(800,50);assertThat(jedis).extractingResultOf("darkSide").containsOnly(false,true);assertThat(jedis).extractingResultOf("name").containsOnly(new Name("Yoda"),new Name("Darth Vader"));assertThat(jedis).extractingResultOf("toString").containsOnly("Yoda","Darth Vader");}46  47}...

extracting

Using AI Code Generation

1package org.example;2import org.assertj.core.api.Assertions;3import java.util.ArrayList;4import java.util.List;5public class App {6    public static void main(String[] args) {7        List<String> list = new ArrayList<>();8        list.add("one");9        list.add("two");10        list.add("three");11        list.add("four");12        list.add("five");13        list.add("six");14        list.add("seven");15        list.add("eight");16        list.add("nine");17        list.add("ten");18        Assertions.assertThat(list).extracting("length").contains(3);19    }20}

extracting

Using AI Code Generation

1package org.example;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.api.Assertions;5public class App {6    public static void main(String[] args) {7        List<String> list = new ArrayList<>();8        list.add("a");9        list.add("b");10        list.add("c");11        list.add("d");12        list.add("e");13        Assertions.assertThat(list).extracting("length").contains(1);14    }15}16	at org.junit.Assert.assertEquals(Assert.java:115)17	at org.junit.Assert.assertEquals(Assert.java:144)18	at org.example.App.main(App.java:13)

extracting

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.api.IterableAssert;3import org.assertj.core.api.ListAssert;4import org.assertj.core.api.ObjectAssert;5import org.assertj.core.api.StringAssert;6import org.assertj.core.api.iterable.Extractor;7import org.assertj.core.util.Lists;8import org.junit.Test;9import java.util.List;10public class AssertJTest {11    public void testAssertJ() {12        List<String> list = Lists.newArrayList("one", "two", "three");13        IterableAssert<String> iterableAssert = Assertions.assertThat(list);14        IterableAssert<String> iterableAssert1 = iterableAssert.extracting(new Extractor<String, String>() {15            public String extract(String input) {16                return input;17            }18        });19        ListAssert<String> listAssert = iterableAssert1.asList();20        StringAssert stringAssert = listAssert.contains("one");21    }22}

extracting

Using AI Code Generation

1import java.util.Arrays;2import java.util.List;3import org.assertj.core.api.Assertions;4public class ExtractingMethod {5    public static void main(String[] args) {6        List<String> list = Arrays.asList("one", "two", "three");7        Assertions.assertThat(list).extracting(String::length).contains(3);8    }9}10org.assertj.core.api.Assertions.assertThat(Assertions.java:100) at ExtractingMethod.main(ExtractingMethod.java:9)11import java.util.Arrays;12import java.util.List;13import org.assertj.core.api.Assertions;14public class ExtractingMethod {15    public static void main(String[] args) {16        List<String> list = Arrays.asList("one", "two", "three");17        Assertions.assertThat(list).extracting(String::length).contains(3);18    }19}20org.assertj.core.api.Assertions.assertThat(Assertions.java:100) at ExtractingMethod.main(ExtractingMethod.java:9)21import java.util.Arrays;22import java.util.List;23import org.assertj.core.api.Assertions;24public class ExtractingMethod {25    public static void main(String[] args) {26        List<String> list = Arrays.asList("one", "two", "three");27        Assertions.assertThat(list).extracting(String::length).contains(3);28    }29}30org.assertj.core.api.Assertions.assertThat(Assertions.java:100) at ExtractingMethod.main(ExtractingMethod.java:9)31import java.util.Arrays;32import java.util.List;33import org.assertj.core.api.Assertions;34public class ExtractingMethod {35    public static void main(String[] args) {36        List<String> list = Arrays.asList("one", "two", "three");37        Assertions.assertThat(list).extracting(String::length).contains(3);38    }39}40org.assertj.core.api.Assertions.assertThat(Assertions.java:100) at ExtractingMethod.main(ExtractingMethod.java:9)41import java.util.Arrays;42import java.util.List;43import org.assertj.core.api.Assertions;

extracting

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.List;3import java.util.Arrays;4public class 1 {5    public static void main(String args[]) {6        List<String> list = Arrays.asList("a", "b", "c");7        assertThat(list).extracting("length").contains(1, 2, 3);8    }9}10import static org.assertj.core.api.Assertions.assertThat;11import java.util.List;12import java.util.Arrays;13public class 2 {14    public static void main(String args[]) {15        List<String> list = Arrays.asList("a", "b", "c");16        assertThat(list).extracting("length").contains(1, 2, 3);17    }18}19import static org.assertj.core.api.Assertions.assertThat;20import java.util.List;21import java.util.Arrays;22public class 3 {23    public static void main(String args[]) {24        List<String> list = Arrays.asList("a", "b", "c");25        assertThat(list).extracting("length").contains(1, 2, 3);26    }27}28import static org.assertj.core.api.Assertions.assertThat;29import java.util

extracting

Using AI Code Generation

1import java.util.ArrayList;2import java.util.Iterator;3import java.util.List;4import java.util.ListIterator;5import java.util.stream.Collectors;6import java.util.stream.Stream;7import org.assertj.core.api.Assertions;8import org.assertj.core.api.ListAssert;9public class Main {10    public static void main(String[] args) {11        List<String> list = new ArrayList<>();12        list.add("A");13        list.add("B");14        list.add("C");15        list.add("D");16        list.add("E");17        list.add("F");18        list.add("G");19        list.add("H");20        list.add("I");21        list.add("J");22        list.add("K");23        list.add("L");24        list.add("M");25        list.add("N");26        list.add("O");27        list.add("P");28        list.add("Q");29        list.add("R");30        list.add("S");31        list.add("T");32        list.add("U");33        list.add("V");34        list.add("W");35        list.add("X");36        list.add("Y");37        list.add("Z");38        ListAssert<String> listAssert = Assertions.assertThat(list);39        List<String> expectedList = new ArrayList<>();40        expectedList.add("A");41        expectedList.add("B");42        expectedList.add("C");43        expectedList.add("D");44        expectedList.add("E");45        expectedList.add("F");46        expectedList.add("G");47        expectedList.add("H");48        expectedList.add("I");49        expectedList.add("J");50        expectedList.add("K");51        expectedList.add("L");52        expectedList.add("M");53        expectedList.add("N");54        expectedList.add("O");55        expectedList.add("P");56        expectedList.add("Q");57        expectedList.add("R");58        expectedList.add("S");59        expectedList.add("T");60        expectedList.add("U");61        expectedList.add("V");62        expectedList.add("W");63        expectedList.add("X");64        expectedList.add("Y");65        expectedList.add("Z");66        listAssert.extracting(String::toString).containsOnlyElementsOf(expectedList);67    }68}

extracting

Using AI Code Generation

1public class 1 {2    public static void main(String[] args) {3        List<Person> persons = new ArrayList<>();4        persons.add(new Person("John", 30));5        persons.add(new Person("Jane", 25));6        persons.add(new Person("Adam", 40));7        persons.add(new Person("Tom", 45));8        assertThat(persons).extracting("name").containsOnly("John", "Jane", "Adam", "Tom");9    }10}11public class Person {12    private String name;13    private int age;14    public Person(String name, int age) {15        this.name = name;16        this.age = age;17    }18    public String getName() {19        return name;20    }21    public int getAge() {22        return age;23    }24}

extracting

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.ArrayList;3import java.util.List;4import org.junit.Test;5public class ExtractingMethod {6public void test() {7List<Developer> developers = new ArrayList<>();8developers.add(new Developer(1,"Java"));9developers.add(new Developer(2,"Scala"));10developers.add(new Developer(3,"Groovy"));11List<Object> ids = developers.stream().map(Developer::getId).collect(Collectors.toList());12List<Object> names = developers.stream().map(Developer::getName).collect(Collectors.toList());13assertThat(ids).contains(1,2,3);14assertThat(names).contains("Java","Scala","Groovy");15}16}17public class Developer {18private int id;19private String name;20public Developer(int id, String name) {21this.id = id;22this.name = name;23}24public int getId() {25return id;26}27public void setId(int id) {28this.id = id;29}30public String getName() {31return name;32}33public void setName(String name) {34this.name = name;35}36}

extracting

Using AI Code Generation

1import org.assertj.core.api.AbstractIterableAssert;2public class Extracting {3    public static void main(String[] args) {4        Iterable<String> iterable = Arrays.asList("A", "B", "C", "D");5        AbstractIterableAssert<?, ?, String, Object> abstractIterableAssert = new AbstractIterableAssert(iterable) {6        };7        abstractIterableAssert.extracting(String::charAt, atIndex(0)).contains('A');8    }9}10assertThat(iterable).extracting(String::charAt, atIndex(0)).contains('A');11assertThat(iterable).extracting(String::charAt, atIndex(0), atIndex(1)).contains('A', 'B');12assertThat(iterable).extracting(String::charAt, atIndex(0), atIndex(2)).contains('A', 'C');13assertThat(iterable).extracting(String::charAt, atIndex(0)).contains('A');14assertThat(iterable).extracting(String::charAt, atIndex(0), atIndex(1)).contains('A', 'B');15assertThat(iterable).extracting(String::charAt, atIndex(0), atIndex(2)).contains('A', 'C');16assertThat(iterable).extracting(String::charAt, atIndex(0)).contains('A');17assertThat(iterable).extracting(String::charAt, atIndex(0), atIndex(1)).contains('A', 'B');18assertThat(iterable).extracting(String::charAt, atIndex(0), atIndex(2)).contains('A', 'C');19assertThat(iterable).extracting(String::charAt, atIndex(0)).contains('A');20assertThat(iterable).extracting(String::charAt, atIndex(0), atIndex(1)).contains('A', 'B');21assertThat(iterable).extracting(String::charAt, atIndex(0), atIndex(2)).contains('A', 'C');

extracting

Using AI Code Generation

1import java.util.List;2import java.util.ArrayList;3import static org.assertj.core.api.Assertions.assertThat;4public class 1 {5    public static void main(String[] args) {6        List<Integer> numbers = new ArrayList<>();7        numbers.add(1);8        numbers.add(2);9        numbers.add(3);10        numbers.add(4);11        numbers.add(5);12        assertThat(numbers).extracting("first").contains(1);13    }14}15at org.assertj.core.error.ShouldContain.shouldContain(ShouldContain.java:57)16at org.assertj.core.internal.Failures.failure(Failures.java:86)17at org.assertj.core.internal.Failures.failure(Failures.java:73)18at org.assertj.core.internal.Failures.failure(Failures.java:69)19at org.assertj.core.internal.Iterables.assertContains(Iterables.java:151)20at org.assertj.core.api.AbstractIterableAssert.contains(AbstractIterableAssert.java:224)21at org.assertj.core.api.AbstractIterableAssert.contains(AbstractIterableAssert.java:44)22at 1.main(1.java:13)23import java.util.List;24import java.util.ArrayList;25import static org.assertj.core.api.Assertions.assertThat;26public class 2 {27    public static void main(String[] args) {28        List<Integer> numbers = new ArrayList<>();29        numbers.add(1);30        numbers.add(2);31        numbers.add(3);32        numbers.add(4);33        numbers.add(5);34        assertThat(numbers).extracting("second").contains(2);35    }36}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.