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How to use FieldsOrPropertiesExtractor class of org.assertj.core.groups package

Best Assertj code snippet using org.assertj.core.groups.FieldsOrPropertiesExtractor

Source:FieldsOrPropertiesExtractor_extract_Test.java

...18import org.assertj.core.test.Employee;19import org.assertj.core.test.Name;20import org.assertj.core.util.introspection.IntrospectionError;21import org.junit.jupiter.api.Test;22public class FieldsOrPropertiesExtractor_extract_Test {23    private Employee yoda;24    private Employee luke;25    private List<Employee> employees;26    @Test27    public void should_extract_field_values_in_absence_of_properties() {28        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("id"));29        Assertions.assertThat(extractedValues).containsOnly(1L, 2L);30    }31    @Test32    public void should_extract_null_valuesfor_null_property_values() {33        yoda.setName(null);34        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("name"));35        Assertions.assertThat(extractedValues).containsOnly(null, new Name("Luke", "Skywalker"));36    }37    @Test38    public void should_extract_null_values_for_null_nested_property_values() {39        yoda.setName(null);40        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("name.first"));41        Assertions.assertThat(extractedValues).containsOnly(null, "Luke");42    }43    @Test44    public void should_extract_null_valuesfor_null_field_values() {45        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("surname"));46        Assertions.assertThat(extractedValues).containsOnly(new Name("Master", "Jedi"), null);47    }48    @Test49    public void should_extract_null_values_for_null_nested_field_values() {50        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("surname.first"));51        Assertions.assertThat(extractedValues).containsOnly("Master", null);52    }53    @Test54    public void should_extract_property_values_when_no_public_field_match_given_name() {55        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("age"));56        Assertions.assertThat(extractedValues).containsOnly(800, 26);57    }58    @Test59    public void should_extract_pure_property_values() {60        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("adult"));61        Assertions.assertThat(extractedValues).containsOnly(true);62    }63    @Test64    public void should_throw_error_when_no_property_nor_public_field_match_given_name() {65        Assertions.assertThatExceptionOfType(IntrospectionError.class).isThrownBy(() -> extract(employees, byName("unknown")));66    }67    @Test68    public void should_throw_exception_when_given_name_is_null() {69        Assertions.assertThatIllegalArgumentException().isThrownBy(() -> extract(employees, byName(((String) (null))))).withMessage("The name of the field/property to read should not be null");70    }71    @Test72    public void should_throw_exception_when_given_name_is_empty() {73        Assertions.assertThatIllegalArgumentException().isThrownBy(() -> extract(employees, byName(""))).withMessage("The name of the field/property to read should not be empty");74    }75    @Test76    public void should_fallback_to_field_if_exception_has_been_thrown_on_property_access() {77        List<Employee> employees = Arrays.<Employee>asList(new FieldsOrPropertiesExtractor_extract_Test.EmployeeWithBrokenName("Name"));78        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("name"));79        Assertions.assertThat(extractedValues).containsOnly(new Name("Name"));80    }81    @Test82    public void should_prefer_properties_over_fields() {83        List<Employee> employees = Arrays.<Employee>asList(new FieldsOrPropertiesExtractor_extract_Test.EmployeeWithOverriddenName("Overridden Name"));84        List<Object> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("name"));85        Assertions.assertThat(extractedValues).containsOnly(new Name("Overridden Name"));86    }87    @Test88    public void should_throw_exception_if_property_cannot_be_extracted_due_to_runtime_exception_during_property_access() {89        Assertions.assertThatExceptionOfType(IntrospectionError.class).isThrownBy(() -> {90            List<Employee> employees = Arrays.<Employee>asList(new org.assertj.core.groups.BrokenEmployee());91            extract(employees, byName("adult"));92        });93    }94    public static class EmployeeWithBrokenName extends Employee {95        public EmployeeWithBrokenName(String name) {96            super(1L, new Name(name), 0);97        }98        @Override...

Source:FieldsOrPropertiesExtractor_extract_tuples_Test.java

...18import org.assertj.core.extractor.Extractors;19import org.assertj.core.test.Employee;20import org.assertj.core.util.introspection.IntrospectionError;21import org.junit.jupiter.api.Test;22public class FieldsOrPropertiesExtractor_extract_tuples_Test {23    private Employee yoda;24    private Employee luke;25    private List<Employee> employees;26    @Test27    public void should_extract_tuples_from_fields_or_properties() {28        List<Tuple> extractedValues = FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("id", "age"));29        Assertions.assertThat(extractedValues).containsOnly(Tuple.tuple(1L, 800), Tuple.tuple(2L, 26));30    }31    @Test32    public void should_extract_tuples_with_consistent_iteration_order() {33        Set<Employee> employeeSet = new HashSet<>(employees);34        List<Tuple> extractedValues = FieldsOrPropertiesExtractor.extract(employeeSet, Extractors.byName("id", "name.first", "age"));35        Assertions.assertThat(extractedValues).containsOnly(Tuple.tuple(1L, "Yoda", 800), Tuple.tuple(2L, "Luke", 26));36    }37    @Test38    public void should_extract_tuples_with_null_value_for_null_nested_field_or_property() {39        luke.setName(null);40        Assertions.assertThat(FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("id", "name.first", "age"))).containsOnly(Tuple.tuple(1L, "Yoda", 800), Tuple.tuple(2L, null, 26));41        Assertions.assertThat(FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("name.first"))).containsOnly("Yoda", null);42        Assertions.assertThat(FieldsOrPropertiesExtractor.extract(employees, Extractors.byName("id", "surname.first"))).containsOnly(Tuple.tuple(1L, "Master"), Tuple.tuple(2L, null));43    }44    @Test45    public void should_throw_error_when_no_property_nor_public_field_match_one_of_given_names() {46        Assertions.assertThatExceptionOfType(IntrospectionError.class).isThrownBy(() -> extract(employees, byName("id", "age", "unknown")));47    }48    @Test49    public void should_throw_exception_when_given_name_is_null() {50        Assertions.assertThatIllegalArgumentException().isThrownBy(() -> extract(employees, byName(((String[]) (null))))).withMessage("The names of the fields/properties to read should not be null");51    }52    @Test53    public void should_throw_exception_when_given_name_is_empty() {54        Assertions.assertThatIllegalArgumentException().isThrownBy(() -> extract(employees, byName(new String[0]))).withMessage("The names of the fields/properties to read should not be empty");55    }56}...

Source:FieldsOrPropertiesExtractor.java

...28 * @author Joel Costigliola29 * @author Mateusz Haligowski30 * 31 */32public class FieldsOrPropertiesExtractor {33  34  /**35   * Call {@link #extract(Iterable, Extractor)} after converting objects to an iterable.36   * <p>37   * Behavior is described in javadoc {@link AbstractObjectArrayAssert#extracting(Extractor)}38   */39  public static <F, T> T[] extract(F[] objects, Extractor<? super F, T> extractor) {    40    List<T> result = extract(newArrayList(objects), extractor);41    return toArray(result);42  }43  /**44   * Behavior is described in {@link AbstractIterableAssert#extracting(Extractor)} 45   */46  public static <F, T> List<T> extract(Iterable<? extends F> objects, Extractor<? super F, T> extractor) {...

FieldsOrPropertiesExtractor

Using AI Code Generation

1import org.assertj.core.groups.FieldsOrPropertiesExtractor;2import org.assertj.core.util.introspection.IntrospectionError;3import org.assertj.core.util.introspection.PropertyOrFieldSupport;4import org.assertj.core.util.introspection.PropertyOrFieldSupport.ComparisonStrategy;5import java.util.List;6public class FieldsOrPropertiesExtractorTest {7    public static void main(String[] args) {8        List<String> fieldsNames = FieldsOrPropertiesExtractor.extractFieldsNamesFrom(Person.class);9        System.out.println("fieldsNames = " + fieldsNames);10        List<String> fieldsNames2 = FieldsOrPropertiesExtractor.extractFieldsNamesFrom(Person.class, new PropertyOrFieldSupport() {11            protected ComparisonStrategy getComparisonStrategy() {12                return null;13            }14            public Object getFieldValue(String fieldOrPropertyName, Object target) throws IntrospectionError {15                return null;16            }17        });18        System.out.println("fieldsNames2 = " + fieldsNames2);19    }20    static class Person {21        private String firstName;22        private String lastName;23        private int age;24        public String getFirstName() {25            return firstName;26        }27        public void setFirstName(String firstName) {28            this.firstName = firstName;29        }30        public String getLastName() {31            return lastName;32        }33        public void setLastName(String lastName) {34            this.lastName = lastName;35        }36        public int getAge() {37            return age;38        }39        public void setAge(int age) {40            this.age = age;41        }42    }43}44The getFieldValue() method is called when the extractFieldsNamesFrom() method is trying to get the value of a field or property of the

FieldsOrPropertiesExtractor

Using AI Code Generation

1import org.assertj.core.groups.FieldsOrPropertiesExtractor;2import org.assertj.core.groups.Tuple;3import org.junit.Assert;4import org.junit.Test;5import java.util.List;6import java.util.Map;7public class FieldsOrPropertiesExtractorTest {8    public void testFieldsOrPropertiesExtractor() {9        List<Map<String, String>> list = new ArrayList<>();10        Map<String, String> map1 = new HashMap<>();11        map1.put("name", "John");12        map1.put("age", "25");13        Map<String, String> map2 = new HashMap<>();14        map2.put("name", "Jane");15        map2.put("age", "22");16        list.add(map1);17        list.add(map2);18        List<Tuple> tuples = FieldsOrPropertiesExtractor.extract(list, "name", "age");19        Assert.assertEquals(tuples.get(0).get(0), "John");20        Assert.assertEquals(tuples.get(0).get(1), "25");21        Assert.assertEquals(tuples.get(1).get(0), "Jane");22        Assert.assertEquals(tuples.get(1).get(1), "22");23    }24}25import org.assertj.core.groups.FieldsOrPropertiesExtractor;26import org.assertj.core.groups.Tuple;27import org.junit.Assert;28import org.junit.Test;29import java.util.ArrayList;30import java.util.HashMap;31import java.util.List;32import java.util.Map;33public class FieldsOrPropertiesExtractorTest {34    public void testFieldsOrPropertiesExtractor() {35        List<Map<String, String>> list = new ArrayList<>();36        Map<String, String> map1 = new HashMap<>();37        map1.put("name", "John");38        map1.put("age", "25");39        Map<String, String> map2 = new HashMap<>();40        map2.put("name", "Jane");41        map2.put("age", "22");42        list.add(map1);43        list.add(map2);44        List<Tuple> tuples = FieldsOrPropertiesExtractor.extractFrom(list, "name", "age");45        Assert.assertEquals(tuples.get(0).get(0), "John");46        Assert.assertEquals(tuples.get(0).get(1), "25");47        Assert.assertEquals(tuples.get(

FieldsOrPropertiesExtractor

Using AI Code Generation

1import org.assertj.core.groups.FieldsOrPropertiesExtractor;2import org.assertj.core.groups.Tuple;3import org.assertj.core.api.Assertions;4import java.util.List;5import java.util.ArrayList;6import java.util.Arrays;7public class FieldsOrPropertiesExtractorTest {8    public static void main(String[] args) {9        List<Employee> employees = new ArrayList<>();10        employees.add(new Employee(1, "John", "Doe", 1000));11        employees.add(new Employee(2, "Jane", "Doe", 2000));12        employees.add(new Employee(3, "John", "Smith", 3000));13        employees.add(new Employee(4, "Jane", "Smith", 4000));14        List<Tuple> tuples = FieldsOrPropertiesExtractor.extract(employees, "id", "firstName", "lastName", "salary");15        System.out.println(tuples);16    }17}18class Employee {19    private int id;20    private String firstName;21    private String lastName;22    private int salary;23    public Employee(int id, String firstName, String lastName, int salary) {24        this.id = id;25        this.firstName = firstName;26        this.lastName = lastName;27        this.salary = salary;28    }29    public int getId() {30        return id;31    }32    public String getFirstName() {33        return firstName;34    }35    public String getLastName() {36        return lastName;37    }38    public int getSalary() {39        return salary;40    }41    public String toString() {42        return "Employee{" + "id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + ", salary=" + salary + '}';43    }44}45[(1, "John", "Doe", 1000), (2, "Jane", "Doe", 2000), (3, "John", "Smith", 3000), (4, "Jane", "Smith", 4000)]

FieldsOrPropertiesExtractor

Using AI Code Generation

1import static org.assertj.core.api.Assertions.*;2import org.assertj.core.groups.FieldsOrPropertiesExtractor;3import org.junit.Test;4import java.util.List;5public class FieldsExtractorTest {6    public void test() {7        List<String> list = FieldsOrPropertiesExtractor.extractFrom(people).extract("name");8        assertThat(list).containsExactly("John", "Jane");9    }10    static class Person {11        String name;12        int age;13        Person(String name, int age) {14            this.name = name;15            this.age = age;16        }17    }18    Person[] people = {new Person("John", 18), new Person("Jane", 20)};19}20How to Extract Fields from a Class Using Java Reflection API? (Using Field Class)21How to Extract Fields from a Class Using Java Reflection API? (Using getDeclaredFields() Method)22How to Extract Fields from a Class Using Java Reflection API? (Using getFields() Method)23How to Extract Fields from a Class Using Java Reflection API? (Using getDeclaredField() Method)

FieldsOrPropertiesExtractor

Using AI Code Generation

1import org.assertj.core.groups.FieldsOrPropertiesExtractor;2import java.util.List;3public class FieldsOrPropertiesExtractorExample {4    public static void main(String[] args) {5        List<Person> persons = Person.getPersons();6        System.out.println(FieldsOrPropertiesExtractor.extract(persons, "name"));7        System.out.println(FieldsOrPropertiesExtractor.extract(persons, "age"));8        System.out.println(FieldsOrPropertiesExtractor.extract(persons, "name", "age"));9    }10}

FieldsOrPropertiesExtractor

Using AI Code Generation

1package org.example;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.groups.FieldsOrPropertiesExtractor;5{6    public static void main( String[] args )7    {8        List<Machine> machines = new ArrayList<>();9        machines.add(new Machine("Mac", 1));10        machines.add(new Machine("Mac", 2));11        machines.add(new Machine("Mac", 3));12        machines.add(new Machine("Mac", 4));13        machines.add(new Machine("Mac", 5));14        System.out.println(FieldsOrPropertiesExtractor.extract(machines, "id"));15    }16}17package org.example;18import java.util.ArrayList;19import java.util.List;20import org.assertj.core.groups.FieldsOrPropertiesExtractor;21{22    public static void main( String[] args )23    {24        List<Machine> machines = new ArrayList<>();25        machines.add(new Machine("Mac", 1));26        machines.add(new Machine("Mac", 2));27        machines.add(new Machine("Mac", 3));28        machines.add(new Machine("Mac", 4));29        machines.add(new Machine("Mac", 5));30        System.out.println(FieldsOrPropertiesExtractor.extract(machines, "name"));31    }32}33package org.example;34import java.util.ArrayList;35import java.util.List;36import org.assertj.core.groups.FieldsOrPropertiesExtractor;37{38    public static void main( String[] args )39    {40        List<Machine> machines = new ArrayList<>();41        machines.add(new Machine("Mac", 1));42        machines.add(new Machine("Mac", 2));43        machines.add(new Machine("Mac", 3));44        machines.add(new Machine("Mac", 4));45        machines.add(new Machine("Mac", 5));46        System.out.println(FieldsOrPropertiesExtractor.extract(machines, "name", "id"));47    }48}49package org.example;50import java.util.ArrayList;51import java.util.List;52import org.assertj.core.groups.FieldsOrPropertiesExtractor;53{54    public static void main( String[] args )55    {56        List<Machine> machines = new ArrayList<>();

FieldsOrPropertiesExtractor

Using AI Code Generation

1package org.example;2import java.util.List;3import java.util.stream.Collectors;4import org.assertj.core.groups.FieldsOrPropertiesExtractor;5import org.assertj.core.util.introspection.IntrospectionError;6public class FieldsOrPropertiesExtractorExample {7    public static void main(String[] args) {8        List<Person> persons = List.of(new Person("John", "Doe", 22),9                new Person("Jane", "Doe", 20));10        List<Object> extractedFieldValues = FieldsOrPropertiesExtractor.extract(persons, "age");11        System.out.println(extractedFieldValues);12        List<Object> extractedPropertyValues = FieldsOrPropertiesExtractor.extract(persons, "firstName");13        System.out.println(extractedPropertyValues);14    }15}16class Person {17    private String firstName;18    private String lastName;19    private int age;20    public Person(String firstName, String lastName, int age) {21        this.firstName = firstName;22        this.lastName = lastName;23        this.age = age;24    }25    public String getFirstName() {26        return firstName;27    }28    public String getLastName() {29        return lastName;30    }31    public int getAge() {32        return age;33    }34}

FieldsOrPropertiesExtractor

Using AI Code Generation

1import org.assertj.core.groups.FieldsOrPropertiesExtractor;2import java.util.List;3import java.util.ArrayList;4import java.util.Arrays;5import java.util.PriorityQueue;6import java.util.Collection;7import java.util.Collections;8import java.util.Comparator;9import java.util.Iterator;10import java.util.NoSuchElementException;11import java.util.Queue;12import java.util.Spliterator;13import java.util.Spliterators;14import java.util.function.Consumer;15import java.util.function.Predicate;16import java.util.function.UnaryOperator;17import java.util.stream.Stream;18import java.util.stream.StreamSupport;19public class FieldsOrPropertiesExtractorTest {20    public static void main(String[] args) {21        List<Employee> employees = new ArrayList<>();22        employees.add(new Employee("John", 25, 10000));23        employees.add(new Employee("Smith", 30, 20000));24        employees.add(new Employee("Alex", 35, 30000));25        employees.add(new Employee("Robert", 40, 40000));26        List<String> names = FieldsOrPropertiesExtractor.extract(employees, "name");27        System.out.println(names);28    }29}30class Employee {31    private String name;32    private int age;33    private int salary;34    public Employee(String name, int age, int salary) {35        this.name = name;36        this.age = age;37        this.salary = salary;38    }39    public String getName() {40        return name;41    }42    public int getAge() {43        return age;44    }45    public int getSalary() {46        return salary;47    }48}

FieldsOrPropertiesExtractor

Using AI Code Generation

1package com.abc;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.groups.FieldsOrPropertiesExtractor;5import org.assertj.core.util.introspection.IntrospectionError;6public class FieldsOrPropertiesExtractorTest {7    public static void main(String[] args) {8        List<Person> persons = new ArrayList<>();9        persons.add(new Person("John", "Doe"));10        persons.add(new Person("Jane", "Doe"));11        persons.add(new Person("Jack", "Doe"));12        FieldsOrPropertiesExtractor extractor = FieldsOrPropertiesExtractor.extractorForType(Person.class);13        List<String> names = extractor.from(persons).extract("name");14        System.out.println(names);15    }16}17package com.abc;18public class Person {19    private String name;20    private String surname;21    public Person(String name, String surname) {22        this.name = name;23        this.surname = surname;24    }25    public String getName() {26        return name;27    }28    public String getSurname() {29        return surname;30    }31}

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