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How to use extract method of org.assertj.core.api.atomic.referencearray.AtomicReferenceArrayAssert_flatExtracting_Test class

Best Assertj code snippet using org.assertj.core.api.atomic.referencearray.AtomicReferenceArrayAssert_flatExtracting_Test.extract

Source:AtomicReferenceArrayAssert_flatExtracting_Test.java

...32  private CartoonCharacter pebbles;33  private CartoonCharacter fred;34  private final Extractor<CartoonCharacter, List<CartoonCharacter>> children = new Extractor<CartoonCharacter, List<CartoonCharacter>>() {35    @Override36    public List<CartoonCharacter> extract(CartoonCharacter input) {37      return input.getChildren();38    }39  };40  @Before41  public void setUp() {42    bart = new CartoonCharacter("Bart Simpson");43    lisa = new CartoonCharacter("Lisa Simpson");44    maggie = new CartoonCharacter("Maggie Simpson");45    homer = new CartoonCharacter("Homer Simpson");46    homer.addChildren(bart, lisa, maggie);47    pebbles = new CartoonCharacter("Pebbles Flintstone");48    fred = new CartoonCharacter("Fred Flintstone");49    fred.addChildren(pebbles);50  }51  @Test52  public void should_allow_assertions_on_joined_lists_when_extracting_children() {53    AtomicReferenceArray<CartoonCharacter> cartoonCharacters = new AtomicReferenceArray<>(array(homer, fred));54    assertThat(cartoonCharacters).flatExtracting(children).containsOnly(bart, lisa, maggie, pebbles);55  }56  @Test57  public void should_allow_assertions_on_empty_result_lists() {58    AtomicReferenceArray<CartoonCharacter> childCharacters = new AtomicReferenceArray<>(array(bart, lisa, maggie));59    assertThat(childCharacters).flatExtracting(children).isEmpty();60  }61  @Test62  public void should_throw_null_pointer_exception_when_extracting_from_null() {63    thrown.expectNullPointerException();64    assertThat(new AtomicReferenceArray<>(array(homer, null))).flatExtracting(children);65  }66  @Test67  public void should_rethrow_throwing_extractor_checked_exception_as_a_runtime_exception() {68    AtomicReferenceArray<CartoonCharacter> childCharacters = new AtomicReferenceArray<>(array(bart, lisa, maggie));69    thrown.expect(RuntimeException.class, "java.lang.Exception: no children");70    assertThat(childCharacters).flatExtracting(cartoonCharacter -> {71      if (cartoonCharacter.getChildren().isEmpty()) throw new Exception("no children");72      return cartoonCharacter.getChildren();73    });74  }75  @Test76  public void should_let_throwing_extractor_runtime_exception_bubble_up() {77    AtomicReferenceArray<CartoonCharacter> childCharacters = new AtomicReferenceArray<>(array(bart, lisa, maggie));78    thrown.expect(RuntimeException.class, "no children");79    assertThat(childCharacters).flatExtracting(cartoonCharacter -> {80      if (cartoonCharacter.getChildren().isEmpty()) throw new RuntimeException("no children");81      return cartoonCharacter.getChildren();82    });83  }84  @Test85  public void should_allow_assertions_on_joined_lists_when_extracting_children_with_throwing_extractor() {86    AtomicReferenceArray<CartoonCharacter> cartoonCharacters = new AtomicReferenceArray<>(array(homer, fred));87    assertThat(cartoonCharacters).flatExtracting(cartoonCharacter -> {88      if (cartoonCharacter.getChildren().isEmpty()) throw new Exception("no children");89      return cartoonCharacter.getChildren();90    }).containsOnly(bart, lisa, maggie, pebbles);91  }92  @Test93  public void should_allow_assertions_on_joined_lists_when_extracting_children_with_anonymous_class_throwing_extractor() {94    AtomicReferenceArray<CartoonCharacter> cartoonCharacters = new AtomicReferenceArray<>(array(homer, fred));95    assertThat(cartoonCharacters).flatExtracting(new ThrowingExtractor<CartoonCharacter, List<CartoonCharacter>, Exception>() {96      @Override97      public List<CartoonCharacter> extractThrows(CartoonCharacter cartoonCharacter) throws Exception {98        if (cartoonCharacter.getChildren().isEmpty()) throw new Exception("no children");99        return cartoonCharacter.getChildren();100      }101    }).containsOnly(bart, lisa, maggie, pebbles);102  }103}...

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