How to use missingActualElements method of org.assertj.core.internal.IterableDiff class

Best Assertj code snippet using org.assertj.core.internal.IterableDiff.missingActualElements

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...27 this.comparisonStrategy = comparisonStrategy;28 /​/​ return the elements in actual that are not in expected: actual - expected29 this.unexpected = unexpectedActualElements(actual, expected);30 /​/​ return the elements in expected that are not in actual: expected - actual31 this.missing = missingActualElements(actual, expected);32 }33 static <T> IterableDiff<T> diff(Iterable<T> actual, Iterable<T> expected, ComparisonStrategy comparisonStrategy) {34 return new IterableDiff<>(actual, expected, comparisonStrategy);35 }36 static <T> IterableDiff<T> diff(Iterable<T> actual, Iterable<T> expected) {37 return diff(actual, expected, StandardComparisonStrategy.instance());38 }39 boolean differencesFound() {40 return !unexpected.isEmpty() || !missing.isEmpty();41 }42 /​**43 * Returns the list of elements in the first iterable that are not in the second, i.e. first - second44 *45 * @param actual the list we want to subtract from46 * @param expected the list to subtract47 * @return the list of elements in the first iterable that are not in the second, i.e. first - second48 */​49 private List<T> unexpectedActualElements(Iterable<T> actual, Iterable<T> expected) {50 List<T> missingInFirst = new ArrayList<>();51 /​/​ use a copy to deal correctly with potential duplicates52 List<T> copyOfExpected = newArrayList(expected);53 for (T elementInActual : actual) {54 if (isActualElementInExpected(elementInActual, copyOfExpected)) {55 /​/​ remove the element otherwise a duplicate would be found in the case if there is one in actual56 iterablesRemoveFirst(copyOfExpected, elementInActual);57 } else {58 missingInFirst.add(elementInActual);59 }60 }61 return unmodifiableList(missingInFirst);62 }63 private boolean isActualElementInExpected(T elementInActual, List<T> copyOfExpected) {64 /​/​ the order of comparisonStrategy.areEqual is important if element comparison is not symmetrical, we must compare actual to65 /​/​ expected but not expected to actual, for ex recursive comparison where:66 /​/​ - actual element is PersonDto, expected a list of Person67 /​/​ - Person has more fields than PersonDto => comparing PersonDto to Person is ok as it looks at PersonDto fields only,68 /​/​ --- the opposite always fails as the reference fields are Person fields and PersonDto does not have all of them.69 return copyOfExpected.stream().anyMatch(expectedElement -> comparisonStrategy.areEqual(elementInActual, expectedElement));70 }71 private List<T> missingActualElements(Iterable<T> actual, Iterable<T> expected) {72 List<T> missingInExpected = new ArrayList<>();73 /​/​ use a copy to deal correctly with potential duplicates74 List<T> copyOfActual = newArrayList(actual);75 for (T expectedElement : expected) {76 if (iterableContains(copyOfActual, expectedElement)) {77 /​/​ remove the element otherwise a duplicate would be found in the case if there is one in actual78 iterablesRemoveFirst(copyOfActual, expectedElement);79 } else {80 missingInExpected.add(expectedElement);81 }82 }83 return unmodifiableList(missingInExpected);84 }85 private boolean iterableContains(Iterable<?> actual, T expectedElement) {...

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missingActualElements

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1import org.assertj.core.api.Assertions;2import org.assertj.core.internal.IterableDiff;3import org.assertj.core.internal.Objects;4import org.junit.Test;5import java.util.ArrayList;6import java.util.Arrays;7import java.util.List;8public class IterableDiffTest {9 public void testMissingActualElements() {10 IterableDiff iterableDiff = new IterableDiff();11 List<String> expected = Arrays.asList("a", "b");12 List<String> actual = Arrays.asList("a", "b", "c", "d", "e");13 List<String> missingActualElements = iterableDiff.missingActualElements(expected, actual);14 Assertions.assertThat(missingActualElements).containsExactly("c", "d", "e");15 }16}17protected List<E> missingActualElements(List<? extends E> expected, List<? extends E> actual) {18 List<E> missing = new ArrayList<E>();19 for (E e : actual) {20 if (!contains(expected, e)) {21 missing.add(e);22 }23 }24 return missing;25 }26public boolean contains(List<?> list, Object element) {27 return list.contains(element);28 }29public boolean contains(Object o) {30 return indexOf(o) >= 0;31 }32public int indexOf(Object o) {33 if (o == null) {34 for (int i = 0; i < size; i++)35 if (elementData[i]==null)36 return i;37 } else {38 for (int i = 0; i < size; i++)39 if (o.equals(elementData[i]))40 return i;41 }42 return -1;43 }44public boolean equals(Object obj)

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missingActualElements

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1public class MissingElements {2 public static void main(String[] args) {3 List<Integer> actual = Arrays.asList(1, 2, 3, 4, 5);4 List<Integer> expected = Arrays.asList(1, 2, 4, 5);5 IterableDiff iterableDiff = new IterableDiff();6 List<Integer> missingElements = iterableDiff.missingActualElements(expected, actual);7 System.out.println("Missing elements are: " + missingElements);8 }9}

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missingActualElements

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1 public void test() {2 IterableDiff iterableDiff = new IterableDiff();3 List<String> actual = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h", "i", "j");4 List<String> expected = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h", "i");5 List<String> missingElements = iterableDiff.missingActualElements(actual, expected);6 System.out.println(missingElements);7 }8assertThat(missingElements).containsExactly("j");9assertThat(missingElements).containsOnly("j");10assertThat(missingElements).contains("j");11assertThat(missingElements).containsSequence("j");12assertThat(missingElements).hasSize(1);13assertThat(missingElements).hasSameSizeAs(expected);14assertThat(missingElements).hasSameSizeAs(actual);15assertThat(missingElements).containsExactlyInAnyOrder("j");16assertThat(missingElements).containsExactlyInAnyOrderElementsOf(expected);17assertThat(missingElements).containsExactlyInAnyOrderElementsOf(actual);18assertThat(missingElements).containsExactlyInAnyOrderElementsOf(missingElements);19assertThat(missingElements).containsExactlyInAnyOrderElementsOf(expected);20assertThat(missingElements).containsExactlyInAnyOrderElementsOf(actual);21assertThat(missingElements).containsExactlyInAnyOrderElementsOf(missingElements);22assertThat(missingElements).containsExactlyInAnyOrder("j");23assertThat(missingElements).containsExactlyInAnyOrderElementsOf(expected);24assertThat(missingElements).containsExactlyInAnyOrderElementsOf(actual);25assertThat(missingElements).containsExactlyInAnyOrderElementsOf(missingElements);26assertThat(missingElements).containsExactlyInAnyOrder("j");27assertThat(missingElements).containsExactlyInAnyOrderElementsOf(expected);28assertThat(missingElements).containsExactlyInAnyOrderElementsOf(actual);29assertThat(missingElements).containsExactlyInAnyOrderElementsOf(missingElements);30assertThat(missingElements).containsExactlyInAnyOrder("j");31assertThat(missingElements).containsExactlyInAnyOrderElementsOf(expected);32assertThat(missingElements).containsExactlyInAnyOrderElementsOf(actual

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missingActualElements

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1import org.assertj.core.api.Assertions;2import org.assertj.core.api.IterableAssert;3import org.assertj.core.internal.IterableDiff;4import org.assertj.core.internal.Iterables;5import org.assertj.core.internal.Objects;6import org.assertj.core.util.introspection.IntrospectionError;7import org.assertj.core.util.introspection.IntrospectionUtils;8import org.assertj.core.util.introspection.PropertyOrFieldSupport;9import java.util.ArrayList;10import java.util.Collection;11import java.util.List;12public class IterableAssertWithMissingActualElements extends IterableAssert<Object> {13 public IterableAssertWithMissingActualElements(Collection<?> actual) {14 super(actual);15 }16 public IterableAssert<Object> containsExactly(Object... values) {17 if (actual == null) {18 throw new AssertionError("Expecting actual not to be null");19 }20 if (values == null) {21 throw new AssertionError("Expecting values not to be null");22 }23 List<Object> actualAsList = new ArrayList<Object>(actual);24 List<Object> valuesAsList = new ArrayList<Object>(values.length);25 for (Object value : values) {26 valuesAsList.add(value);27 }28 List<Object> missing = new IterableDiff<Object>(actualAsList, valuesAsList).missingActualElements();29 if (!missing.isEmpty()) {30 throw new AssertionError("Expecting actual to contain exactly the elements of values but missing elements were: " + missing);31 }32 return this;33 }34}35import org.junit.Test;36import java.util.Arrays;37import java.util.List;38import static org.assertj.core.api.Assertions.assertThat;39public class IterableAssertWithMissingActualElementsTest {40 public void test() {41 List<String> list = Arrays.asList("one", "two", "three");42 assertThat(list).containsExactly("one", "two", "three", "four");43 }44}

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missingActualElements

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1import org.assertj.core.api.Assertions2import org.assertj.core.internal.IterableDiff3class IterableDiffTest {4 void testMissingActualElements() {5 def iterableDiff = new IterableDiff()6 def missingActualElements = iterableDiff.missingActualElements(actual, other)7 Assertions.assertThat(missingActualElements).isEmpty()8 missingActualElements = iterableDiff.missingActualElements(actual, other)9 Assertions.assertThat(missingActualElements).containsExactly(5)10 missingActualElements = iterableDiff.missingActualElements(actual, other)11 Assertions.assertThat(missingActualElements).containsExactly(5, 6)12 missingActualElements = iterableDiff.missingActualElements(actual, other)13 Assertions.assertThat(missingActualElements).containsExactly(5, 6, 7)14 }15}

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