KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use ByNameSingleExtractor class of org.assertj.core.extractor package

Best Assertj code snippet using org.assertj.core.extractor.ByNameSingleExtractor

Source:ByNameSingleExtractorTest.java

...22import org.assertj.core.util.introspection.Introspection;23import org.assertj.core.util.introspection.IntrospectionError;24import org.junit.jupiter.api.DisplayName;25import org.junit.jupiter.api.Test;26@DisplayName("ByNameSingleExtractor")27class ByNameSingleExtractorTest {28  private static final Employee YODA = new Employee(1L, new Name("Yoda"), 800);29  @Test30  void should_extract_field_values_even_if_property_does_not_exist() {31    // GIVEN32    ByNameSingleExtractor underTest = new ByNameSingleExtractor("id");33    // WHEN34    Object result = underTest.apply(YODA);35    // THEN36    then(result).isEqualTo(1L);37  }38  @Test39  void should_extract_property_values_when_no_public_field_match_given_name() {40    // GIVEN41    ByNameSingleExtractor underTest = new ByNameSingleExtractor("age");42    // WHEN43    Object result = underTest.apply(YODA);44    // THEN45    then(result).isEqualTo(800);46  }47  @Test48  void should_extract_pure_property_values() {49    // GIVEN50    ByNameSingleExtractor underTest = new ByNameSingleExtractor("adult");51    // WHEN52    Object result = underTest.apply(YODA);53    // THEN54    then(result).isEqualTo(true);55  }56  @Test57  void should_throw_error_when_no_property_nor_public_field_match_given_name() {58    // GIVEN59    ByNameSingleExtractor underTest = new ByNameSingleExtractor("unknown");60    // WHEN61    Throwable thrown = catchThrowable(() -> underTest.apply(YODA));62    // THEN63    then(thrown).isInstanceOf(IntrospectionError.class);64  }65  @Test66  void should_throw_exception_when_given_name_is_null() {67    // GIVEN68    ByNameSingleExtractor underTest = new ByNameSingleExtractor(null);69    // WHEN70    Throwable thrown = catchThrowable(() -> underTest.apply(YODA));71    // THEN72    then(thrown).isInstanceOf(IllegalArgumentException.class)73                .hasMessage("The name of the property/field to read should not be null");74  }75  @Test76  void should_throw_exception_when_given_name_is_empty() {77    // GIVEN78    ByNameSingleExtractor underTest = new ByNameSingleExtractor("");79    // WHEN80    Throwable thrown = catchThrowable(() -> underTest.apply(YODA));81    // THEN82    then(thrown).isInstanceOf(IllegalArgumentException.class)83                .hasMessage("The name of the property/field to read should not be empty");84  }85  @Test86  void should_fallback_to_field_if_exception_has_been_thrown_on_property_access() {87    // GIVEN88    Employee employee = new Employee(1L, new Name("Name"), 0) {89      @Override90      public Name getName() {91        throw new RuntimeException();92      }93    };94    ByNameSingleExtractor underTest = new ByNameSingleExtractor("name");95    // WHEN96    Object result = underTest.apply(employee);97    // THEN98    then(result).isEqualTo(new Name("Name"));99  }100  @Test101  void should_prefer_properties_over_fields() {102    // GIVEN103    Employee employee = new Employee(1L, new Name("Name"), 0) {104      @Override105      public Name getName() {106        return new Name("Overridden Name");107      }108    };109    ByNameSingleExtractor underTest = new ByNameSingleExtractor("name");110    // WHEN111    Object result = underTest.apply(employee);112    // THEN113    then(result).isEqualTo(new Name("Overridden Name"));114  }115  @Test116  void should_throw_exception_if_property_cannot_be_extracted_due_to_runtime_exception_during_property_access() {117    // GIVEN118    Employee employee = new Employee() {119      @Override120      public boolean isAdult() {121        throw new RuntimeException();122      }123    };124    ByNameSingleExtractor underTest = new ByNameSingleExtractor("adult");125    // WHEN126    Throwable thrown = catchThrowable(() -> underTest.apply(employee));127    // THEN128    then(thrown).isInstanceOf(IntrospectionError.class);129  }130  @Test131  void should_throw_exception_if_no_object_is_given() {132    // GIVEN133    ByNameSingleExtractor underTest = new ByNameSingleExtractor("id");134    // WHEN135    Throwable thrown = catchThrowable(() -> underTest.apply(null));136    // THEN137    then(thrown).isInstanceOf(IllegalArgumentException.class);138  }139  @Test140  void should_extract_single_value_from_map_by_key() {141    // GIVEN142    Map<String, Employee> map = mapOf(entry("key", YODA));143    ByNameSingleExtractor underTest = new ByNameSingleExtractor("key");144    // WHEN145    Object result = underTest.apply(map);146    // THEN147    then(result).isEqualTo(YODA);148  }149  @Test150  void should_throw_error_from_map_by_non_existing_key() {151    // GIVEN152    Map<String, Employee> map = mapOf(entry("key", YODA));153    ByNameSingleExtractor underTest = new ByNameSingleExtractor("non-existing");154    // WHEN155    Throwable thrown = catchThrowable(() -> underTest.apply(map));156    // THEN157    then(thrown).isInstanceOf(IntrospectionError.class);158  }159  @Test160  void should_extract_null_from_map_by_key_with_null_value() {161    // GIVEN162    Map<String, Employee> map = mapOf(entry("key", null));163    ByNameSingleExtractor underTest = new ByNameSingleExtractor("key");164    // WHEN165    Object result = underTest.apply(map);166    // THEN167    then(result).isNull();168  }169  @Test170  void should_extract_property_field_combinations() {171    // GIVEN172    Employee darth = new Employee(1L, new Name("Darth", "Vader"), 100);173    Employee luke = new Employee(2L, new Name("Luke", "Skywalker"), 26);174    darth.field = luke;175    luke.field = darth;176    luke.surname = new Name("Young", "Padawan");177    ByNameSingleExtractor underTest = new ByNameSingleExtractor("me.field.me.field.me.field.surname.name");178    // WHEN179    Object result = underTest.apply(darth);180    // THEN181    then(result).isEqualTo("Young Padawan");182  }183  @Test184  void should_extract_property_with_bare_name_method() {185    // GIVEN186    BareOptionalIntHolder holder = new BareOptionalIntHolder(42);187    ByNameSingleExtractor underTest = new ByNameSingleExtractor("value");188    // WHEN189    Object result = underTest.apply(holder);190    // THEN191    then(result).isEqualTo(OptionalInt.of(42));192  }193  @Test194  void should_ignore_property_with_bare_name_method_when_disabled() {195    try {196      // GIVEN197      Introspection.setExtractBareNamePropertyMethods(false);198      BareOptionalIntHolder holder = new BareOptionalIntHolder(42);199      ByNameSingleExtractor underTest = new ByNameSingleExtractor("value");200      // WHEN201      Object result = underTest.apply(holder);202      // THEN203      then(result).isEqualTo(42);204    } finally {205      Introspection.setExtractBareNamePropertyMethods(true);206    }207  }208  /** This style of Optional handling is emitted by Immutables code gen library. */209  static class BareOptionalIntHolder {210    private final Integer value;211    BareOptionalIntHolder() {212      value = null;213    }...

ByNameSingleExtractor

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat; 2import static org.assertj.core.api.Assertions.entry; 3import static org.assertj.core.extractor.Extractors.byName; 4import static org.assertj.core.extractor.Extractors.byNameSingle; 5import static org.assertj.core.util.Lists.list; 6import java.util.List; 7import org.assertj.core.api.MapAssert; 8import org.assertj.core.api.MapAssertBaseTest; 9import org.assertj.core.data.MapEntry; 10import org.assertj.core.test.Maps; 11import org.junit.Test; 12public class MapAssert_extracting_byNameSingle_Test extends MapAssertBaseTest { 13  public void should_allow_assertions_on_property_extracted_from_given_maps_by_name() { 14    maps.put("name", Maps.mapOf(entry("first", "Yoda"), entry("last", "Solo"))); 15    maps.put("color", Maps.mapOf(entry("first", "green"), entry("last", "red"))); 16    maps.put("age", Maps.mapOf(entry("first", 800), entry("last", 100))); 17    assertThat(maps).extracting(byNameSingle("name")) 18                    .containsOnly(Maps.mapOf(entry("first", "Yoda"), entry("last", "Solo"))); 19    assertThat(maps).extracting(byNameSingle("color")) 20                    .containsOnly(Maps.mapOf(entry("first", "green"), entry("last", "red"))); 21    assertThat(maps).extracting(byNameSingle("age")) 22                    .containsOnly(Maps.mapOf(entry("first", 800), entry("last", 100))); 23  } 24  public void should_allow_assertions_on_property_extracted_from_given_maps_by_name_with_multiple_entries() { 25    maps.put("name", Maps.mapOf(entry("first", "Yoda"), entry("last", "Solo"))); 26    maps.put("color", Maps.mapOf(entry("first", "green"), entry("last", "red"))); 27    maps.put("age", Maps.mapOf(entry("first", 800), entry("last", 100))); 28    assertThat(maps).extracting("name", "age") 29                    .containsOnly(tuple(Maps.mapOf(entry("first", "Yoda"), entry("last", "Solo")), 30                                        Maps.mapOf(entry("first", 800), entry("last", 100)))); 31  }

ByNameSingleExtractor

Using AI Code Generation

1org.assertj.core.extractor.Extractors.byNameSingleExtractor("name");2org.assertj.core.extractor.Extractors.byNameMultipleExtractor("name");3org.assertj.core.extractor.Extractors.byNameSingleExtractor("name");4org.assertj.core.extractor.Extractors.byNameMultipleExtractor("name");5org.assertj.core.extractor.Extractors.byNameSingleExtractor("name");6org.assertj.core.extractor.Extractors.byNameMultipleExtractor("name");7org.assertj.core.extractor.Extractors.byNameSingleExtractor("name");8org.assertj.core.extractor.Extractors.byNameMultipleExtractor("name");9org.assertj.core.extractor.Extractors.byNameSingleExtractor("name");10org.assertj.core.extractor.Extractors.byNameMultipleExtractor("name");11org.assertj.core.extractor.Extractors.byNameSingleExtractor("name");12org.assertj.core.extractor.Extractors.byNameMultipleExtractor("name");13org.assertj.core.extractor.Extractors.byNameSingleExtractor("name");14org.assertj.core.extractor.Extractors.byNameMultipleExtractor("name");15org.assertj.core.extractor.Extractors.byNameSingleExtractor("name");16org.assertj.core.extractor.Extractors.byNameMultipleExtractor("name");

ByNameSingleExtractor

Using AI Code Generation

1import org.assertj.core.extractor.*;2import org.assertj.core.api.*;3import org.assertj.core.api.Assertions.*;4import org.assertj.core.util.*;5import org.assertj.core.data.*;6import org.assertj.co

ByNameSingleExtractor

Using AI Code Generation

1List<Person> persons = new ArrayList<Person>();2persons.add(new Person("John", "Doe"));3persons.add(new Person("Jane", "Doe"));4String firstName = extract(persons).with(new ByNameSingleExtractor<Person>("firstName")).asString();5assertThat(firstName).isEqualTo("John");6List<Person> persons = new ArrayList<Person>();7persons.add(new Person("John", "Doe"));8persons.add(new Person("Jane", "Doe"));9List<String> firstNames = extract(persons).with(new ByNameMultipleExtractor<Person>("firstName")).asList();10assertThat(firstNames).contains("John","Jane");11List<Person> persons = new ArrayList<Person>();12persons.add(new Person("John", "Doe"));13persons.add(new Person("Jane", "Doe"));14String firstName = extract(persons).with("firstName").asString();15assertThat(firstName).isEqualTo("John");16List<Person> persons = new ArrayList<Person>();17persons.add(new Person("John", "Doe"));18persons.add(new Person("Jane", "Doe"));19List<String> firstNames = extract(persons).with("firstName").asList();20assertThat(firstNames).contains("John","Jane");21List<Person> persons = new ArrayList<Person>();22persons.add(new Person("John", "Doe"));23persons.add(new Person("Jane", "Doe"));24String firstName = extract(persons).with("firstName", String.class).asString();25assertThat(firstName).isEqualTo("John");26List<Person> persons = new ArrayList<Person>();27persons.add(new Person("John", "Doe"));28persons.add(new Person("Jane", "Doe"));

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.