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How to use byName method of org.assertj.core.extractor.Extractors class

Best Assertj code snippet using org.assertj.core.extractor.Extractors.byName

Source:FieldsOrPropertiesExtractor_extract_Test.java

...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        @Override99        public Name getName() {100            throw new IllegalStateException();101        }102    }103    public static class EmployeeWithOverriddenName extends Employee {104        private String overriddenName;105        public EmployeeWithOverriddenName(final String overriddenName) {...

Source:FieldsOrPropertiesExtractor_extract_tuples_Test.java

...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:Extractors.java

...20 * <p>21 * 22 * For example:23 * <pre><code class='java'> assertThat(objectsList).extracting(toStringMethod()).contains("toString 1", "toString 2");24 * assertThat(objectsList).extracting(byName("field")).contains("someResult1", "someResult2");</code></pre>25 * 26 * @author Mateusz Haligowski27 *28 */29public class Extractors {30  /**31   * Provides extractor for extracting {@link java.lang.Object#toString} from any object32   * @return the built {@link Extractor}33   */34  public static Extractor<Object, String> toStringMethod() {35    return new ToStringExtractor();36  }37  38  /**39   * Provides extractor for extracting single field or property from any object using reflection40   * @param <F> type to extract property from41   * @param fieldOrProperty the name of the field/property to extract 42   * @return the built {@link Extractor}43   */44  public static <F> Extractor<F, Object> byName(String fieldOrProperty) {45    return new ByNameSingleExtractor<>(fieldOrProperty);46  }47  48  /**49   * Provides extractor for extracting multiple fields or properties from any object using reflection50   * @param <F> type to extract property from51   * @param fieldsOrProperties the name of the fields/properties to extract 52   * @return the built {@link Extractor}53   */54  public static <F> Extractor<F, Tuple> byName(String... fieldsOrProperties) {55    return new ByNameMultipleExtractor<>(fieldsOrProperties);56  }57  /**58   * Provides extractor for extracting values by method name from any object using reflection59   * @param <F> type to extract property from60   * @param methodName the name of the method to execute61   * @return the built {@link Extractor}62   */63  public static <F> Extractor<F, Object> resultOf(String methodName) {64    return new ResultOfExtractor<>(methodName);65  }66  public static String extractedDescriptionOf(String... propertiesOrFields) {67    return format("Extracted: %s", Strings.join(propertiesOrFields).with(", "));68  }...

byName

Using AI Code Generation

1package org.kodejava.example.assertj;2import org.assertj.core.api.Assertions;3import org.assertj.core.extractor.Extractors;4import java.util.Arrays;5import java.util.List;6public class ExtractorByNameExample {7    public static void main(String[] args) {8        List<Product> products = Arrays.asList(9                new Product("P001", "iPhone 6", 799.99),10                new Product("P002", "Macbook Pro", 1999.99),11                new Product("P003", "iPad", 499.99));12        List<String> names = Extractors.byName("name").extract(products);13        Assertions.assertThat(names)14                .contains("iPhone 6", "Macbook Pro", "iPad");15    }16}17package org.kodejava.example.assertj;18import org.assertj.core.api.Assertions;19import org.assertj.core.extractor.Extractors;20import java.util.Arrays;21import java.util.List;22public class ExtractorByNameExample {23    public static void main(String[] args) {24        List<Product> products = Arrays.asList(25                new Product("P001", "iPhone 6", 799.99),26                new Product("P002", "Macbook Pro", 1999.99),27                new Product("P003", "iPad", 499.99));28        List<String> names = Extractors.byName("name").extract(products);29        Assertions.assertThat(names)30                .contains("iPhone 6", "Macbook Pro", "iPad");31    }32}33package org.kodejava.example.assertj;34import org.assertj.core.api.Assertions;35import org.assertj.core.extractor.Extractors;36import java.util.Arrays;37import java.util.List;38public class ExtractorByNameExample {39    public static void main(String[] args) {40        List<Product> products = Arrays.asList(41                new Product("P001", "iPhone 6", 799.99),42                new Product("P002", "Macbook Pro", 1999.99),43                new Product("P003", "iPad", 499.99

byName

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.extractor.Extractors;3import org.assertj.core.util.introspection.IntrospectionError;4import org.junit.Test;5import java.util.Arrays;6import java.util.List;7public class ByNameExtractor {8    public void test() throws IntrospectionError {9        List<Name> names = Arrays.asList(new Name("John", "Doe"), new Name("Jane", "Doe"));10        Assertions.assertThat(names).extracting(Extractors.byName("firstName")).containsExactly("John", "Jane");11    }12    private class Name {13        private String firstName;14        private String lastName;15        public Name(String firstName, String lastName) {16            this.firstName = firstName;17            this.lastName = lastName;18        }19        public String getFirstName() {

byName

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.extractor.Extractors.byName;3import java.util.Arrays;4import java.util.List;5import org.junit.Test;6public class ByNameTest {7public void byNameTest() {8List<Person> persons = Arrays.asList(new Person("John", "Doe"), new Person("Jane", "Doe"));9assertThat(persons).extracting(byName("firstName")).contains("John", "Jane");10assertThat(persons).extracting(byName("lastName")).contains("Doe", "Doe");11}12}13class Person {14private String firstName;15private String lastName;16public Person(String firstName, String lastName) {17this.firstName = firstName;18this.lastName = lastName;19}20public String getFirstName() {21return firstName;22}23public String getLastName() {24return lastName;25}26}27Extracting byName() method is used to extract the value of a field with

byName

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.extractor.Extractors.byName;3import java.util.List;4import java.util.ArrayList;5import org.junit.Test;6public class Test1 {7    public void test1() {8        List<Employee> employees = new ArrayList<Employee>();9        employees.add(new Employee(1, "John", "Doe", 1000.0));10        employees.add(new Employee(2, "Jane", "Doe", 2000.0));11        employees.add(new Employee(3, "Jack", "Doe", 3000.0));12        List<String> firstNames = assertThat(employees).extracting(byName("firstName")).asList();13        assertThat(firstNames).containsExactly("John", "Jane", "Jack");14    }15}16import static org.assertj.core.api.Assertions.assertThat;17import static org.assertj.core.extractor.Extractors.byName;18import java.util.List;19import java.util.ArrayList;20import org.junit.Test;21public class Test1 {22    public void test1() {23        List<Employee> employees = new ArrayList<Employee>();24        employees.add(new Employee(1, "John", "Doe", 1000.0));25        employees.add(new Employee(2, "Jane", "Doe", 2000.0));26        employees.add(new Employee(3, "Jack", "Doe", 3000.0));27        List<String> firstNames = assertThat(employees).extracting(byName("firstName")).asList();28        assertThat(firstNames).containsExactly("John", "Jane", "Jack");29    }30}

byName

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.api.Condition;5import org.assertj.core.extractor.Extractors;6import org.junit.Test;7public class ByNameTest {8  private List<Person> people = new ArrayList<>();9  private Person person1 = new Person("John", "Doe");10  private Person person2 = new Person("Jane", "Doe");11  private Person person3 = new Person("Jack", "Doe");12  public void byNameTest() {13    people.add(person1);14    people.add(person2);15    people.add(person3);16    assertThat(people).haveExactly(1, new Condition<>(Extractors.byName("John", String.class), "John"));17    assertThat(people).haveExactly(1, new Condition<>(Extractors.byName("Jane", String.class), "Jane"));18    assertThat(people).haveExactly(1, new Condition<>(Extractors.byName("Jack", String.class), "Jack"));19  }20}21import static org.assertj.core.api.Assertions.assertThat;22import java.util.ArrayList;23import java.util.List;24import org.assertj.core.api.Condition;25import org.assertj.core.extractor.Extractors;26import org.junit.Test;27public class ByNameTest {28  private List<Person> people = new ArrayList<>();29  private Person person1 = new Person("John", "Doe");30  private Person person2 = new Person("Jane", "Doe");31  private Person person3 = new Person("Jack", "Doe");32  public void byNameTest() {33    people.add(person1);34    people.add(person2);35    people.add(person3);36    assertThat(people).haveExactly(1, new Condition<>(Extractors.byName("firstName", String.class), "John"));37    assertThat(people).haveExactly(1, new Condition<>(Extractors.byName("firstName", String.class), "Jane"));38    assertThat(people).haveExactly(1, new Condition<>(Extractors.byName("firstName", String.class), "Jack"));39  }40}41import static org.assertj.core.api.Assertions.assertThat;42import java.util.ArrayList;43import java.util.List;44import org.assertj

byName

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.extractor.Extractors;3import org.junit.Test;4import java.util.ArrayList;5import java.util.List;6public class ByNameTest {7    public void testByName() {8        Person person1 = new Person(1, "John", "Doe");9        Person person2 = new Person(2, "Jane", "Doe");10        List<Person> persons = new ArrayList<>();11        persons.add(person1);12        persons.add(person2);13        Assertions.assertThat(persons).extracting(Extractors.byName("name")).contains("John");14    }15}

byName

Using AI Code Generation

1import org.assertj.core.api.*;2import org.assertj.core.extractor.Extractors;3import org.junit.Test;4import java.util.*;5public class ByNameTest {6public void test() {7List<Employee> employees = Arrays.asList(new Employee(1, "John", "Doe", 1000), new Employee(2, "Jane", "Doe", 2000));8List<String> firstNames = Assertions.extractProperty("firstName", String.class).from(employees);9Assertions.assertThat(firstNames).contains("John", "Jane");10}11}12import org.assertj.core.api.*;13import org.assertj.core.extractor.Extractors;14import org.junit.Test;15import java.util.*;16public class ByNameTest {17public void test() {18List<Employee> employees = Arrays.asList(new Employee(1, "John", "Doe", 1000), new Employee(2, "Jane", "Doe", 2000));19List<String> firstNames = Extractors.byName("firstName").extract(employees);20Assertions.assertThat(firstNames).contains("John", "Jane");21}22}23import org.assertj.core.api.*;24import org.assertj.core.extractor.Extractors;25import org.junit.Test;26import java.util.*;27public class ByNameTest {28public void test() {29List<Employee> employees = Arrays.asList(new Employee(1, "John", "Doe", 1000), new Employee(2, "Jane", "Doe", 2000));30List<String> firstNames = Extractors.byName("firstName").extract(employees);31Assertions.assertThat(firstNames).contains("John", "Jane");32}33}34import org.assertj.core.api.*;35import org.assertj.core.extractor.Extractors;36import org.junit.Test;37import java.util.*;38public class ByNameTest {39public void test() {40List<Employee> employees = Arrays.asList(new Employee(1, "John", "Doe", 1000), new Employee(2, "

byName

Using AI Code Generation

1import java.util.*;2import org.assertj.core.extractor.Extractors;3public class 1 {4public static void main(String[] args) {5List<Country> countries = new ArrayList<Country>();6countries.add(new Country("India", "New Delhi"));7countries.add(new Country("USA", "Washington"));8countries.add(new Country("Japan", "Tokyo"));9countries.add(new Country("France", "Paris"));10countries.add(new Country("Italy", "Rome"));11List<String> countryNames = Extractors.byName("name").extract(countries);12System.out.println("Country Names: " + countryNames);13List<String> capitals = Extractors.byName("capital").extract(countries);14System.out.println("Capitals: " + capitals);15}16}17class Country {18private String name;19private String capital;20public Country(String name, String capital) {21this.name = name;22this.capital = capital;23}24public String getName() {25return name;26}27public void setName(String name) {28this.name = name;29}30public String getCapital() {31return capital;32}33public void setCapital(String capital) {34this.capital = capital;35}36}

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