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"));

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