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How to use toComparator method of org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration class

Best Assertj code snippet using org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration.toComparator

Source:RecursiveComparisonConfiguration.java

...350   * @since 3.17.0351   */352  @SuppressWarnings("unchecked")353  public <T> void registerEqualsForType(BiPredicate<? super T, ? super T> equals, Class<T> type) {354    registerComparatorForType(toComparator(equals), type);355  }356  /**357   * Registers the given {@link Comparator} to compare the fields at the given locations.358   * <p>359   * The fields must be specified from the root object, for example if {@code Foo} has a {@code Bar} field and both have an {@code id} field,360   * one can register a comparator for Foo and Bar's {@code id} by calling:361   * <pre><code class='java'> registerComparatorForFields(idComparator, "foo.id", "foo.bar.id")</code></pre>362   * <p>363   * Comparators registered with this method have precedence over comparators registered with {@link #registerComparatorForType(Comparator, Class)}.364   * <p>365   * Note that registering a {@link Comparator} for a given field will override the previously registered BiPredicate/Comparator (if any).366   * <p>367   * See {@link RecursiveComparisonAssert#withComparatorForFields(Comparator, String...) RecursiveComparisonAssert#withComparatorForFields(Comparator, String...)} for examples.368   *369   * @param comparator the {@link java.util.Comparator Comparator} to use to compare the given field370   * @param fieldLocations the locations from the root object of the fields the comparator should be used for371   * @throws NullPointerException if the given comparator is null.372   */373  public void registerComparatorForFields(Comparator<?> comparator, String... fieldLocations) {374    requireNonNull(comparator, "Expecting a non null Comparator");375    Stream.of(fieldLocations).forEach(fieldLocation -> fieldComparators.registerComparator(fieldLocation, comparator));376  }377  /**378   * Registers the given {@link BiPredicate} to compare the fields at the given locations.379   * <p>380   * The fields must be specified from the root object, for example if {@code Foo} has a {@code Bar} field and both have an {@code id} field,381   * one can register a BiPredicate for Foo and Bar's {@code id} by calling:382   * <pre><code class='java'> registerEqualsForFields(idBiPredicate, "foo.id", "foo.bar.id")</code></pre>383   * <p>384   * BiPredicates registered with this method have precedence over the ones registered with {@link #registerEqualsForType(BiPredicate, Class)}385   * or the comparators registered with {@link #registerComparatorForType(Comparator, Class)}.386   * <p>387   * Note that registering a {@link BiPredicate} for a given field will override the previously registered BiPredicate/Comparator (if any).388   * <p>389   * See {@link RecursiveComparisonAssert#withEqualsForFields(BiPredicate, String...) RecursiveComparisonAssert#withEqualsForFields(BiPredicate, String...)} for examples.390   *391   * @param equals the equals implementation to compare the given fields.392   * @param fieldLocations the locations from the root object of the fields the comparator should be used for393   * @throws NullPointerException if the given BiPredicate is null.394   * @since 3.17.0395   */396  public void registerEqualsForFields(BiPredicate<?, ?> equals, String... fieldLocations) {397    registerComparatorForFields(toComparator(equals), fieldLocations);398  }399  /**400   * Sets whether the recursive comparison will check that actual's type is compatible with expected's type (the same applies for each field).401   * Compatible means that the expected's type is the same or a subclass of actual's type.402   * <p>403   * See {@link RecursiveComparisonAssert#withStrictTypeChecking()} for code examples.404   *405   * @param strictTypeChecking whether the recursive comparison will check that actual's type is compatible with expected's type.406   */407  public void strictTypeChecking(boolean strictTypeChecking) {408    this.strictTypeChecking = strictTypeChecking;409  }410  public boolean isInStrictTypeCheckingMode() {411    return strictTypeChecking;412  }413  public List<Pattern> getIgnoredFieldsRegexes() {414    return ignoredFieldsRegexes;415  }416  public List<Class<?>> getIgnoredOverriddenEqualsForTypes() {417    return ignoredOverriddenEqualsForTypes;418  }419  public List<String> getIgnoredOverriddenEqualsForFields() {420    return ignoredOverriddenEqualsForFields;421  }422  public List<Pattern> getIgnoredOverriddenEqualsForFieldsMatchingRegexes() {423    return ignoredOverriddenEqualsForFieldsMatchingRegexes;424  }425  public Stream<Entry<String, Comparator<?>>> comparatorByFields() {426    return fieldComparators.comparatorByFields();427  }428  @Override429  public String toString() {430    return multiLineDescription(CONFIGURATION_PROVIDER.representation());431  }432  @Override433  public int hashCode() {434    return java.util.Objects.hash(fieldComparators, ignoreAllActualEmptyOptionalFields, ignoreAllActualNullFields,435                                  ignoreAllExpectedNullFields, ignoreAllOverriddenEquals, ignoreCollectionOrder,436                                  ignoredCollectionOrderInFields, ignoredCollectionOrderInFieldsMatchingRegexes, ignoredFields,437                                  ignoredFieldsRegexes, ignoredOverriddenEqualsForFields, ignoredOverriddenEqualsForTypes,438                                  ignoredOverriddenEqualsForFieldsMatchingRegexes, ignoredTypes, strictTypeChecking,439                                  typeComparators);440  }441  @Override442  public boolean equals(Object obj) {443    if (this == obj) return true;444    if (obj == null) return false;445    if (getClass() != obj.getClass()) return false;446    RecursiveComparisonConfiguration other = (RecursiveComparisonConfiguration) obj;447    return java.util.Objects.equals(fieldComparators, other.fieldComparators)448           && ignoreAllActualEmptyOptionalFields == other.ignoreAllActualEmptyOptionalFields449           && ignoreAllActualNullFields == other.ignoreAllActualNullFields450           && ignoreAllExpectedNullFields == other.ignoreAllExpectedNullFields451           && ignoreAllOverriddenEquals == other.ignoreAllOverriddenEquals452           && ignoreCollectionOrder == other.ignoreCollectionOrder453           && java.util.Objects.equals(ignoredCollectionOrderInFields, other.ignoredCollectionOrderInFields)454           && java.util.Objects.equals(ignoredFields, other.ignoredFields)455           && java.util.Objects.equals(ignoredFieldsRegexes, other.ignoredFieldsRegexes)456           && java.util.Objects.equals(ignoredOverriddenEqualsForFields, other.ignoredOverriddenEqualsForFields)457           && java.util.Objects.equals(ignoredOverriddenEqualsForTypes, other.ignoredOverriddenEqualsForTypes)458           && java.util.Objects.equals(ignoredOverriddenEqualsForFieldsMatchingRegexes,459                                       other.ignoredOverriddenEqualsForFieldsMatchingRegexes)460           && java.util.Objects.equals(ignoredTypes, other.ignoredTypes) && strictTypeChecking == other.strictTypeChecking461           && java.util.Objects.equals(typeComparators, other.typeComparators)462           && java.util.Objects.equals(ignoredCollectionOrderInFieldsMatchingRegexes,463                                       other.ignoredCollectionOrderInFieldsMatchingRegexes);464  }465  public String multiLineDescription(Representation representation) {466    StringBuilder description = new StringBuilder();467    describeIgnoreAllActualNullFields(description);468    describeIgnoreAllActualEmptyOptionalFields(description);469    describeIgnoreAllExpectedNullFields(description);470    describeIgnoredFields(description);471    describeIgnoredFieldsRegexes(description);472    describeIgnoredFieldsForTypes(description);473    describeOverriddenEqualsMethodsUsage(description, representation);474    describeIgnoreCollectionOrder(description);475    describeIgnoredCollectionOrderInFields(description);476    describeIgnoredCollectionOrderInFieldsMatchingRegexes(description);477    describeRegisteredComparatorByTypes(description);478    describeRegisteredComparatorForFields(description);479    describeTypeCheckingStrictness(description);480    return description.toString();481  }482  boolean shouldIgnore(DualValue dualValue) {483    FieldLocation fieldLocation = dualValue.fieldLocation;484    return matchesAnIgnoredField(fieldLocation)485           || matchesAnIgnoredFieldRegex(fieldLocation)486           || shouldIgnoreFieldBasedOnFieldValue(dualValue);487  }488  Set<String> getNonIgnoredActualFieldNames(DualValue dualValue) {489    Set<String> actualFieldsNames = Objects.getFieldsNames(dualValue.actual.getClass());490    // we are doing the same as shouldIgnore(DualValue dualValue) but in two steps for performance reasons:491    // - we filter first ignored field by names that don't need building DualValues492    // - then we filter field DualValues with the remaining criteria that need to get the field value493    // DualValues are built introspecting fields which is expensive.494    return actualFieldsNames.stream()495                            // evaluate field name ignoring criteria on dualValue field location + field name496                            .filter(fieldName -> !shouldIgnoreFieldBasedOnFieldLocation(dualValue.fieldLocation.field(fieldName)))497                            .map(fieldName -> dualValueForField(dualValue, fieldName))498                            // evaluate field value ignoring criteria499                            .filter(fieldDualValue -> !shouldIgnoreFieldBasedOnFieldValue(fieldDualValue))500                            // back to field name501                            .map(DualValue::getFieldName)502                            .filter(fieldName -> !fieldName.isEmpty())503                            .collect(toSet());504  }505  // non accessible stuff506  private boolean shouldIgnoreFieldBasedOnFieldValue(DualValue dualValue) {507    return matchesAnIgnoredNullField(dualValue)508           || matchesAnIgnoredFieldType(dualValue)509           || matchesAnIgnoredEmptyOptionalField(dualValue);510  }511  private boolean shouldIgnoreFieldBasedOnFieldLocation(FieldLocation fieldLocation) {512    return matchesAnIgnoredField(fieldLocation) || matchesAnIgnoredFieldRegex(fieldLocation);513  }514  private static DualValue dualValueForField(DualValue parentDualValue, String fieldName) {515    Object actualFieldValue = COMPARISON.getSimpleValue(fieldName, parentDualValue.actual);516    // no guarantees we have a field in expected named as fieldName517    Object expectedFieldValue;518    try {519      expectedFieldValue = COMPARISON.getSimpleValue(fieldName, parentDualValue.expected);520    } catch (@SuppressWarnings("unused") Exception e) {521      // set the field to null to express it is absent, this not 100% accurate as the value could be null522      // but it works to evaluate if dualValue should be ignored with matchesAnIgnoredFieldType523      expectedFieldValue = null;524    }525    FieldLocation fieldLocation = parentDualValue.fieldLocation.field(fieldName);526    return new DualValue(fieldLocation, actualFieldValue, expectedFieldValue);527  }528  boolean hasCustomComparator(DualValue dualValue) {529    String fieldName = dualValue.getConcatenatedPath();530    if (hasComparatorForField(fieldName)) return true;531    if (dualValue.actual == null && dualValue.expected == null) return false;532    // best effort assuming actual and expected have the same type (not 100% true as we can compare object of differennt types)533    Class<?> valueType = dualValue.actual != null ? dualValue.actual.getClass() : dualValue.expected.getClass();534    return hasComparatorForType(valueType);535  }536  boolean shouldIgnoreOverriddenEqualsOf(DualValue dualValue) {537    // we must compare java basic types otherwise the recursive comparison loops infinitely!538    if (dualValue.isActualJavaType()) return false;539    // enums don't have fields, comparing them field by field has no sense, we need to use equals which is overridden and final540    if (dualValue.isActualAnEnum()) return false;541    return ignoreAllOverriddenEquals542           || matchesAnIgnoredOverriddenEqualsField(dualValue.fieldLocation)543           || (dualValue.actual != null && shouldIgnoreOverriddenEqualsOf(dualValue.actual.getClass()));544  }545  @VisibleForTesting546  boolean shouldIgnoreOverriddenEqualsOf(Class<? extends Object> clazz) {547    return matchesAnIgnoredOverriddenEqualsRegex(clazz) || matchesAnIgnoredOverriddenEqualsType(clazz);548  }549  boolean shouldIgnoreCollectionOrder(FieldLocation fieldLocation) {550    return ignoreCollectionOrder551           || matchesAnIgnoredCollectionOrderInField(fieldLocation)552           || matchesAnIgnoredCollectionOrderInFieldRegex(fieldLocation);553  }554  private void describeIgnoredFieldsRegexes(StringBuilder description) {555    if (!ignoredFieldsRegexes.isEmpty())556      description.append(format("- the fields matching the following regexes were ignored in the comparison: %s%n",557                                describeRegexes(ignoredFieldsRegexes)));558  }559  private void describeIgnoredFields(StringBuilder description) {560    if (!ignoredFields.isEmpty())561      description.append(format("- the following fields were ignored in the comparison: %s%n", describeIgnoredFields()));562  }563  private void describeIgnoredFieldsForTypes(StringBuilder description) {564    if (!ignoredTypes.isEmpty())565      description.append(format("- the following types were ignored in the comparison: %s%n", describeIgnoredTypes()));566  }567  private void describeIgnoreAllActualNullFields(StringBuilder description) {568    if (ignoreAllActualNullFields) description.append(format("- all actual null fields were ignored in the comparison%n"));569  }570  private void describeIgnoreAllActualEmptyOptionalFields(StringBuilder description) {571    if (getIgnoreAllActualEmptyOptionalFields())572      description.append(format("- all actual empty optional fields were ignored in the comparison (including Optional, OptionalInt, OptionalLong and OptionalDouble)%n"));573  }574  private void describeIgnoreAllExpectedNullFields(StringBuilder description) {575    if (ignoreAllExpectedNullFields) description.append(format("- all expected null fields were ignored in the comparison%n"));576  }577  private void describeOverriddenEqualsMethodsUsage(StringBuilder description, Representation representation) {578    String header = ignoreAllOverriddenEquals579        ? "- no overridden equals methods were used in the comparison (except for java types)"580        : "- overridden equals methods were used in the comparison";581    description.append(header);582    if (isConfiguredToIgnoreSomeButNotAllOverriddenEqualsMethods()) {583      description.append(format(" except for:%n"));584      describeIgnoredOverriddenEqualsMethods(description, representation);585    } else {586      description.append(format("%n"));587    }588  }589  private void describeIgnoredOverriddenEqualsMethods(StringBuilder description, Representation representation) {590    if (!ignoredOverriddenEqualsForFields.isEmpty())591      description.append(format("%s the following fields: %s%n", INDENT_LEVEL_2,592                                describeIgnoredOverriddenEqualsForFields()));593    if (!ignoredOverriddenEqualsForTypes.isEmpty())594      description.append(format("%s the following types: %s%n", INDENT_LEVEL_2,595                                describeIgnoredOverriddenEqualsForTypes(representation)));596    if (!ignoredOverriddenEqualsForFieldsMatchingRegexes.isEmpty())597      description.append(format("%s the types matching the following regexes: %s%n", INDENT_LEVEL_2,598                                describeRegexes(ignoredOverriddenEqualsForFieldsMatchingRegexes)));599  }600  private String describeIgnoredOverriddenEqualsForTypes(Representation representation) {601    List<String> fieldsDescription = ignoredOverriddenEqualsForTypes.stream()602                                                                    .map(representation::toStringOf)603                                                                    .collect(toList());604    return join(fieldsDescription).with(", ");605  }606  private String describeIgnoredOverriddenEqualsForFields() {607    return join(ignoredOverriddenEqualsForFields).with(", ");608  }609  private void describeIgnoreCollectionOrder(StringBuilder description) {610    if (ignoreCollectionOrder) description.append(format("- collection order was ignored in all fields in the comparison%n"));611  }612  private void describeIgnoredCollectionOrderInFields(StringBuilder description) {613    if (!ignoredCollectionOrderInFields.isEmpty())614      description.append(format("- collection order was ignored in the following fields in the comparison: %s%n",615                                describeIgnoredCollectionOrderInFields()));616  }617  private void describeIgnoredCollectionOrderInFieldsMatchingRegexes(StringBuilder description) {618    if (!ignoredCollectionOrderInFieldsMatchingRegexes.isEmpty())619      description.append(format("- collection order was ignored in the fields matching the following regexes in the comparison: %s%n",620                                describeRegexes(ignoredCollectionOrderInFieldsMatchingRegexes)));621  }622  private boolean matchesAnIgnoredOverriddenEqualsRegex(Class<?> clazz) {623    if (ignoredOverriddenEqualsForFieldsMatchingRegexes.isEmpty()) return false; // shortcut624    String canonicalName = clazz.getCanonicalName();625    return ignoredOverriddenEqualsForFieldsMatchingRegexes.stream()626                                                          .anyMatch(regex -> regex.matcher(canonicalName).matches());627  }628  private boolean matchesAnIgnoredOverriddenEqualsType(Class<?> clazz) {629    return ignoredOverriddenEqualsForTypes.contains(clazz);630  }631  private boolean matchesAnIgnoredOverriddenEqualsField(FieldLocation fieldLocation) {632    return ignoredOverriddenEqualsForFields.stream().anyMatch(fieldLocation::matches);633  }634  private boolean matchesAnIgnoredNullField(DualValue dualValue) {635    return (ignoreAllActualNullFields && dualValue.actual == null)636           || (ignoreAllExpectedNullFields && dualValue.expected == null);637  }638  private boolean matchesAnIgnoredEmptyOptionalField(DualValue dualValue) {639    return ignoreAllActualEmptyOptionalFields640           && dualValue.isActualFieldAnEmptyOptionalOfAnyType();641  }642  private boolean matchesAnIgnoredFieldRegex(FieldLocation fieldLocation) {643    return ignoredFieldsRegexes.stream()644                               .anyMatch(regex -> regex.matcher(fieldLocation.getPathToUseInRules()).matches());645  }646  private boolean matchesAnIgnoredFieldType(DualValue dualValue) {647    Object actual = dualValue.actual;648    if (actual != null) return ignoredTypes.contains(actual.getClass());649    Object expected = dualValue.expected;650    // actual is null => we can't evaluate its type, we can only reliably check dualValue.expected's type if651    // strictTypeChecking is enabled which guarantees expected is of the same type.652    if (strictTypeChecking && expected != null) return ignoredTypes.contains(expected.getClass());653    // if strictTypeChecking is disabled, we can't safely ignore the field (if we did, we would ignore all null fields!).654    return false;655  }656  private boolean matchesAnIgnoredField(FieldLocation fieldLocation) {657    return ignoredFields.stream().anyMatch(fieldLocation::matches);658  }659  private boolean matchesAnIgnoredCollectionOrderInField(FieldLocation fieldLocation) {660    return ignoredCollectionOrderInFields.stream().anyMatch(fieldLocation::matches);661  }662  private boolean matchesAnIgnoredCollectionOrderInFieldRegex(FieldLocation fieldLocation) {663    String pathToUseInRules = fieldLocation.getPathToUseInRules();664    return ignoredCollectionOrderInFieldsMatchingRegexes.stream().anyMatch(regex -> regex.matcher(pathToUseInRules).matches());665  }666  private String describeIgnoredFields() {667    return join(ignoredFields).with(", ");668  }669  private String describeIgnoredTypes() {670    List<String> typesDescription = ignoredTypes.stream()671                                                .map(Class::getName)672                                                .collect(toList());673    return join(typesDescription).with(", ");674  }675  private String describeIgnoredCollectionOrderInFields() {676    return join(ignoredCollectionOrderInFields).with(", ");677  }678  private String describeRegexes(List<Pattern> regexes) {679    List<String> fieldsDescription = regexes.stream()680                                            .map(Pattern::pattern)681                                            .collect(toList());682    return join(fieldsDescription).with(", ");683  }684  private boolean isConfiguredToIgnoreSomeButNotAllOverriddenEqualsMethods() {685    boolean ignoreSomeOverriddenEqualsMethods = !ignoredOverriddenEqualsForFieldsMatchingRegexes.isEmpty()686                                                || !ignoredOverriddenEqualsForTypes.isEmpty()687                                                || !ignoredOverriddenEqualsForFields.isEmpty();688    return !ignoreAllOverriddenEquals && ignoreSomeOverriddenEqualsMethods;689  }690  private void describeRegisteredComparatorByTypes(StringBuilder description) {691    if (!typeComparators.isEmpty()) {692      description.append(format("- these types were compared with the following comparators:%n"));693      describeComparatorForTypes(description);694    }695  }696  private void describeComparatorForTypes(StringBuilder description) {697    typeComparators.comparatorByTypes()698                   .map(this::formatRegisteredComparatorByType)699                   .forEach(description::append);700  }701  private String formatRegisteredComparatorByType(Entry<Class<?>, Comparator<?>> next) {702    return format("%s %s -> %s%n", INDENT_LEVEL_2, next.getKey().getName(), next.getValue());703  }704  private void describeRegisteredComparatorForFields(StringBuilder description) {705    if (!fieldComparators.isEmpty()) {706      description.append(format("- these fields were compared with the following comparators:%n"));707      describeComparatorForFields(description);708      if (!typeComparators.isEmpty()) {709        description.append(format("- field comparators take precedence over type comparators.%n"));710      }711    }712  }713  private void describeComparatorForFields(StringBuilder description) {714    fieldComparators.comparatorByFields()715                    .map(this::formatRegisteredComparatorForField)716                    .forEach(description::append);717  }718  private String formatRegisteredComparatorForField(Entry<String, Comparator<?>> comparatorForField) {719    return format("%s %s -> %s%n", INDENT_LEVEL_2, comparatorForField.getKey(), comparatorForField.getValue());720  }721  private void describeTypeCheckingStrictness(StringBuilder description) {722    String str = strictTypeChecking723        ? "- actual and expected objects and their fields were considered different when of incompatible types (i.e. expected type does not extend actual's type) even if all their fields match, for example a Person instance will never match a PersonDto (call strictTypeChecking(false) to change that behavior).%n"724        : "- actual and expected objects and their fields were compared field by field recursively even if they were not of the same type, this allows for example to compare a Person to a PersonDto (call strictTypeChecking(true) to change that behavior).%n";725    description.append(format(str));726  }727  /**728   * Creates builder to build {@link RecursiveComparisonConfiguration}.729   * @return created builder730   */731  public static Builder builder() {732    return new Builder();733  }734  /**735   * Builder to build {@link RecursiveComparisonConfiguration}.736   */737  public static final class Builder {738    private boolean strictTypeChecking;739    private boolean ignoreAllActualNullFields;740    private boolean ignoreAllActualEmptyOptionalFields;741    private boolean ignoreAllExpectedNullFields;742    private String[] ignoredFields = {};743    private String[] ignoredFieldsMatchingRegexes = {};744    private Class<?>[] ignoredTypes = {};745    private Class<?>[] ignoredOverriddenEqualsForTypes = {};746    private String[] ignoredOverriddenEqualsForFields = {};747    private String[] ignoredOverriddenEqualsForFieldsMatchingRegexes = {};748    private boolean ignoreAllOverriddenEquals;749    private boolean ignoreCollectionOrder;750    private String[] ignoredCollectionOrderInFields = {};751    private String[] ignoredCollectionOrderInFieldsMatchingRegexes = {};752    private TypeComparators typeComparators = new TypeComparators();753    private FieldComparators fieldComparators = new FieldComparators();754    private Builder() {}755    /**756     * Sets whether the recursive comparison will check that actual's type is compatible with expected's type (the same applies for each field).757     * Compatible means that the expected's type is the same or a subclass of actual's type.758     * <p>759     * See {@link RecursiveComparisonAssert#withStrictTypeChecking()} for code examples.760     *761     * @param strictTypeChecking whether the recursive comparison will check that actual's type is compatible with expected's type.762     * @return this builder.763     */764    public Builder withStrictTypeChecking(boolean strictTypeChecking) {765      this.strictTypeChecking = strictTypeChecking;766      return this;767    }768    /**769     * Sets whether actual null fields are ignored in the recursive comparison.770     * <p>771     * See {@link RecursiveComparisonAssert#ignoringActualNullFields()} for code examples.772     *773     * @param ignoreAllActualNullFields whether to ignore actual null fields in the recursive comparison774     * @return this builder.775     */776    public Builder withIgnoreAllActualNullFields(boolean ignoreAllActualNullFields) {777      this.ignoreAllActualNullFields = ignoreAllActualNullFields;778      return this;779    }780    /**781     * Sets whether actual empty optional fields are ignored in the recursive comparison.782     * <p>783     * See {@link RecursiveComparisonAssert#ignoringActualEmptyOptionalFields()} for code examples.784     *785     * @param ignoreAllActualEmptyOptionalFields whether to ignore actual empty optional fields in the recursive comparison786     * @return this builder.787     */788    public Builder withIgnoreAllActualEmptyOptionalFields(boolean ignoreAllActualEmptyOptionalFields) {789      this.ignoreAllActualEmptyOptionalFields = ignoreAllActualEmptyOptionalFields;790      return this;791    }792    /**793     * Sets whether expected null fields are ignored in the recursive comparison.794     * <p>795     * See {@link RecursiveComparisonAssert#ignoringExpectedNullFields()} for code examples.796     *797     * @param ignoreAllExpectedNullFields whether to ignore expected null fields in the recursive comparison798     * @return this builder.799     */800    public Builder withIgnoreAllExpectedNullFields(boolean ignoreAllExpectedNullFields) {801      this.ignoreAllExpectedNullFields = ignoreAllExpectedNullFields;802      return this;803    }804    /**805     * Adds the given fields to the list of the object under test fields to ignore in the recursive comparison. Nested fields can be specified like this: home.address.street.806     * <p>807     * See {@link RecursiveComparisonAssert#ignoringFields(String...) RecursiveComparisonAssert#ignoringFields(String...)} for examples.808     *809     * @param fieldsToIgnore the fields of the object under test to ignore in the comparison.810     * @return this builder.811     */812    public Builder withIgnoredFields(String... fieldsToIgnore) {813      this.ignoredFields = fieldsToIgnore;814      return this;815    }816    /**817     * Allows to ignore in the recursive comparison the object under test fields matching the given regexes. The given regexes are added to the already registered ones.818     * <p>819     * See {@link RecursiveComparisonAssert#ignoringFieldsMatchingRegexes(String...) RecursiveComparisonAssert#ignoringFieldsMatchingRegexes(String...)} for examples.820     *821     * @param regexes regexes used to ignore fields in the comparison.822     * @return this builder.823     */824    public Builder withIgnoredFieldsMatchingRegexes(String... regexes) {825      this.ignoredFieldsMatchingRegexes = regexes;826      return this;827    }828    /**829     * Adds the given types to the list of the object under test fields types to ignore in the recursive comparison.830     * The fields are ignored if their types exactly match one of the ignored types, if a field is a subtype of an ignored type it won't be ignored.831     * <p>832     * Note that if some object under test fields are null, they are not ignored by this method as their type can't be evaluated.833     * <p>834     * See {@link RecursiveComparisonAssert#ignoringFields(String...) RecursiveComparisonAssert#ignoringFieldsOfTypes(Class...)} for examples.835     *836     * @param types the types of the object under test to ignore in the comparison.837     * @return this builder.838     */839    public Builder withIgnoredFieldsOfTypes(Class<?>... types) {840      this.ignoredTypes = types;841      return this;842    }843    /**844     * Adds the given types to the list of types to force a recursive comparison on.845     * <p>846     * See {@link RecursiveComparisonAssert#ignoringOverriddenEqualsForTypes(Class...) RecursiveComparisonAssert#ignoringOverriddenEqualsForTypes(Class...)} for examples.847     *848     * @param types the types to the list of types to force a recursive comparison on.849     * @return this builder.850     */851    public Builder withIgnoredOverriddenEqualsForTypes(Class<?>... types) {852      this.ignoredOverriddenEqualsForTypes = types;853      return this;854    }855    /**856     * Adds the given fields to the list of fields to force a recursive comparison on.857     * <p>858     * See {@link RecursiveComparisonAssert#ignoringOverriddenEqualsForFields(String...) RecursiveComparisonAssert#ignoringOverriddenEqualsForFields(String...)} for examples.859     *860     * @param fields the fields to force a recursive comparison on.861     * @return this builder.862     */863    public Builder withIgnoredOverriddenEqualsForFields(String... fields) {864      this.ignoredOverriddenEqualsForFields = fields;865      return this;866    }867    /**868     * Adds the given regexes to the list of regexes used find the fields to force a recursive comparison on.869     * <p>870     * See {@link RecursiveComparisonAssert#ignoringOverriddenEqualsForFieldsMatchingRegexes(String...) RecursiveComparisonAssert#ignoringOverriddenEqualsForFieldsMatchingRegexes(String...)} for examples.871     *872     * @param regexes regexes used to specify the fields we want to force a recursive comparison on.873     * @return this builder.874     */875    public Builder withIgnoredOverriddenEqualsForFieldsMatchingRegexes(String... regexes) {876      this.ignoredOverriddenEqualsForFieldsMatchingRegexes = regexes;877      return this;878    }879    /**880     * Force a recursive comparison on all fields (except java types) if true.881     * <p>882     * See {@link RecursiveComparisonAssert#ignoringAllOverriddenEquals()} for examples.883     *884     * @param ignoreAllOverriddenEquals whether to force a recursive comparison on all fields (except java types) or not.885     * @return this builder.886     */887    public Builder withIgnoreAllOverriddenEquals(boolean ignoreAllOverriddenEquals) {888      this.ignoreAllOverriddenEquals = ignoreAllOverriddenEquals;889      return this;890    }891    /**892     * Sets whether to ignore collection order in the comparison.893     * <p>894     * See {@link RecursiveComparisonAssert#ignoringCollectionOrder()} for code examples.895     *896     * @param ignoreCollectionOrder whether to ignore collection order in the comparison.897     * @return this builder.898     */899    public Builder withIgnoreCollectionOrder(boolean ignoreCollectionOrder) {900      this.ignoreCollectionOrder = ignoreCollectionOrder;901      return this;902    }903    /**904     * Adds the given fields to the list of the object under test fields to ignore collection order in the recursive comparison.905     * <p>906     * See {@link RecursiveComparisonAssert#ignoringCollectionOrderInFields(String...) RecursiveComparisonAssert#ignoringCollectionOrderInFields(String...)} for examples.907     *908     * @param fieldsToIgnoreCollectionOrder the fields of the object under test to ignore collection order in the comparison.909     * @return this builder.910     */911    public Builder withIgnoredCollectionOrderInFields(String... fieldsToIgnoreCollectionOrder) {912      this.ignoredCollectionOrderInFields = fieldsToIgnoreCollectionOrder;913      return this;914    }915    /**916     * Adds the given regexes to the list of regexes used to find the object under test fields to ignore collection order in the recursive comparison.917     * <p>918     * See {@link RecursiveComparisonAssert#ignoringCollectionOrderInFieldsMatchingRegexes(String...) RecursiveComparisonAssert#ignoringCollectionOrderInFieldsMatchingRegexes(String...)} for examples.919     *920     * @param regexes regexes used to find the object under test fields to ignore collection order in in the comparison.921     * @return this builder.922     */923    public Builder withIgnoredCollectionOrderInFieldsMatchingRegexes(String... regexes) {924      this.ignoredCollectionOrderInFieldsMatchingRegexes = regexes;925      return this;926    }927    /**928     * Registers the given {@link Comparator} to compare the fields with the given type.929     * <p>930     * Comparators registered with this method have less precedence than comparators registered with {@link #withComparatorForFields(Comparator, String...)}931     * or BiPredicate registered with  {@link #withEqualsForFields(BiPredicate, String...)}.932     * <p>933     * Note that registering a {@link Comparator} for a given type will override the previously registered BiPredicate/Comparator (if any).934     * <p>935     * See {@link RecursiveComparisonAssert#withComparatorForType(Comparator, Class)} for examples.936     *937     * @param <T> the class type to register a comparator for938     * @param comparator the {@link java.util.Comparator Comparator} to use to compare the given field939     * @param type the type to be compared with the given comparator.940     * @return this builder.941     * @throws NullPointerException if the given Comparator is null.942     */943    public <T> Builder withComparatorForType(Comparator<? super T> comparator, Class<T> type) {944      requireNonNull(comparator, "Expecting a non null Comparator");945      this.typeComparators.put(type, comparator);946      return this;947    }948    /**949     * Registers the given {@link BiPredicate} to compare the fields with the given type.950     * <p>951     * BiPredicates registered with this method have less precedence than the ones registered with {@link #withEqualsForFields(BiPredicate, String...)}952     * or the comparators registered with {@link #withComparatorForFields(Comparator, String...)}.953     * <p>954     * Note that registering a {@link BiPredicate} for a given type will override the previously registered BiPredicate/Comparator (if any).955     * <p>956     * See {@link RecursiveComparisonAssert#withEqualsForType(BiPredicate, Class)} for examples.957     *958     * @param <T> the class type to register a BiPredicate for959     * @param equals the {@link BiPredicate} to use to compare the given field960     * @param type the type to be compared with the given comparator.961     * @return this builder.962     * @since 3.17.0963     * @throws NullPointerException if the given BiPredicate is null.964     */965    @SuppressWarnings("unchecked")966    public <T> Builder withEqualsForType(BiPredicate<? super T, ? super T> equals, Class<T> type) {967      return withComparatorForType(toComparator(equals), type);968    }969    /**970     * Registers the given {@link Comparator} to compare the fields at the given locations.971     * <p>972     * The fields must be specified from the root object, for example if {@code Foo} has a {@code Bar} field and both have an {@code id} field,973     * one can register a comparator for Foo and Bar's {@code id} by calling:974     * <pre><code class='java'> registerComparatorForFields(idComparator, "foo.id", "foo.bar.id")</code></pre>975     * <p>976     * Comparators registered with this method have precedence over comparators registered with {@link #withComparatorForType(Comparator, Class)}977     * or BiPredicate registered with {@link #withEqualsForType(BiPredicate, Class)}.978     * <p>979     * Note that registering a {@link Comparator} for a given field will override the previously registered BiPredicate/Comparator (if any).980     * <p>981     * See {@link RecursiveComparisonAssert#withComparatorForFields(Comparator, String...) RecursiveComparisonAssert#withComparatorForFields(Comparator comparator, String...fields)} for examples.982     *983     * @param comparator the {@link java.util.Comparator Comparator} to use to compare the given field984     * @param fields the fields the comparator should be used for985     * @return this builder.986     * @throws NullPointerException if the given Comparator is null.987     */988    public Builder withComparatorForFields(Comparator<?> comparator, String... fields) {989      requireNonNull(comparator, "Expecting a non null Comparator");990      Stream.of(fields).forEach(fieldLocation -> fieldComparators.registerComparator(fieldLocation, comparator));991      return this;992    }993    /**994     * Registers the given {@link BiPredicate} to compare the fields at the given locations.995     * <p>996     * The fields must be specified from the root object, for example if {@code Foo} has a {@code Bar} field and both have an {@code id} field,997     * one can register a BiPredicate for Foo and Bar's {@code id} by calling:998     * <pre><code class='java'> withEqualsForFields(idBiPredicate, "foo.id", "foo.bar.id")</code></pre>999     * <p>1000     * BiPredicates registered with this method have precedence over the ones registered with {@link #withEqualsForType(BiPredicate, Class)}1001     * or the comparators registered with {@link #withComparatorForType(Comparator, Class)}.1002     * <p>1003     * Note that registering a {@link BiPredicate} for a given field will override the previously registered BiPredicate/Comparator (if any).1004     * <p>1005     * See {@link RecursiveComparisonAssert#withEqualsForFields(BiPredicate, String...) RecursiveComparisonAssert#withEqualsForFields(BiPredicate equals, String...fields)} for examples.1006     *1007     * @param equals the {@link BiPredicate} to use to compare the given fields1008     * @param fields the fields the BiPredicate should be used for1009     * @return this builder.1010     * @since 3.17.01011     * @throws NullPointerException if the given BiPredicate is null.1012     */1013    public Builder withEqualsForFields(BiPredicate<?, ?> equals, String... fields) {1014      return withComparatorForFields(toComparator(equals), fields);1015    }1016    public RecursiveComparisonConfiguration build() {1017      return new RecursiveComparisonConfiguration(this);1018    }1019  }1020  @SuppressWarnings({ "rawtypes", "unchecked" })1021  private static Comparator toComparator(BiPredicate equals) {1022    requireNonNull(equals, "Expecting a non null BiPredicate");1023    return (o1, o2) -> equals.test(o1, o2) ? 0 : 1;1024  }1025}...

toComparator

Using AI Code Generation

1import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration2def config = new RecursiveComparisonConfiguration()3config.ignoreAllActualNullFields()4config.ignoreAllExpectedNullFields()5config.ignoreAllActualEmptyOptionalFields()6config.ignoreAllExpectedEmptyOptionalFields()7config.toComparator()8import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration9def config = new RecursiveComparisonConfiguration()10config.ignoreAllActualNullFields()11config.ignoreAllExpectedNullFields()12config.ignoreAllActualEmptyOptionalFields()13config.ignoreAllExpectedEmptyOptionalFields()14config.toComparator()15import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration16def config = new RecursiveComparisonConfiguration()17config.ignoreAllActualNullFields()18config.ignoreAllExpectedNullFields()19config.ignoreAllActualEmptyOptionalFields()20config.ignoreAllExpectedEmptyOptionalFields()21config.toComparator()22import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration23def config = new RecursiveComparisonConfiguration()24config.ignoreAllActualNullFields()25config.ignoreAllExpectedNullFields()26config.ignoreAllActualEmptyOptionalFields()27config.ignoreAllExpectedEmptyOptionalFields()28config.toComparator()29import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration30def config = new RecursiveComparisonConfiguration()31config.ignoreAllActualNullFields()32config.ignoreAllExpectedNullFields()33config.ignoreAllActualEmptyOptionalFields()34config.ignoreAllExpectedEmptyOptionalFields()35config.toComparator()36import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration37def config = new RecursiveComparisonConfiguration()38config.ignoreAllActualNullFields()39config.ignoreAllExpectedNullFields()40config.ignoreAllActualEmptyOptionalFields()41config.ignoreAllExpectedEmptyOptionalFields()42config.toComparator()43import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration44def config = new RecursiveComparisonConfiguration()45config.ignoreAllActualNullFields()46config.ignoreAllExpectedNullFields()47config.ignoreAllActualEmptyOptionalFields()48config.ignoreAllExpectedEmptyOptionalFields()49config.toComparator()50import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration51def config = new RecursiveComparisonConfiguration()52config.ignoreAllActualNullFields()53config.ignoreAllExpectedNullFields()54config.ignoreAllActualEmptyOptionalFields()55config.ignoreAllExpectedEmptyOptionalFields()56config.toComparator()57import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration58def config = new RecursiveComparisonConfiguration()

toComparator

Using AI Code Generation

1import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration;2import java.util.List;3import static org.assertj.core.api.Assertions.assertThat;4import static org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration.builder;5public class RecursiveComparisonConfigurationTest {6    public static void main(String[] args) {7        List<String> list1 = List.of("a", "b", "c");8        List<String> list2 = List.of("c", "b", "a");9        assertThat(list1).usingRecursiveComparison().isEqualTo(list2);10        RecursiveComparisonConfiguration recursiveComparisonConfiguration = builder()11                .withIgnoredFields("ignored").build();12        assertThat(list1).usingRecursiveComparison(recursiveComparisonConfiguration).isEqualTo(list2);13    }14}15at RecursiveComparisonConfigurationTest.main(RecursiveComparisonConfigurationTest.java:17)16import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration;17import java.util.List;18import static org.assertj.core.api.Assertions.assertThat;19import static org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration.builder;20public class RecursiveComparisonConfigurationTest {21    public static void main(String[] args) {22        List<String> list1 = List.of("a", "b", "c");23        List<String> list2 = List.of("c", "b", "a");24        RecursiveComparisonConfiguration recursiveComparisonConfiguration = builder()25                .withIgnoredFields("ignored").build();26        assertThat(list1).usingComparatorForFields(recursiveComparisonConfiguration.toComparator(), "[]")27                .usingRecursiveComparison().isEqualTo(list2);28    }29}30import org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration;31import java.util.List;32import static org.assertj.core.api.Assertions.assertThat;33import static org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration.builder;34public class RecursiveComparisonConfigurationTest {35    public static void main(String[] args)

toComparator

Using AI Code Generation

1import static java.util.Comparator.comparing;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.within;4import static org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration.builder;5import java.util.Date;6import org.junit.Test;7public class DateComparatorTest {8   public void givenTwoDates_whenUsingComparator_thenEqual() {9      Date date1 = new Date();10      Date date2 = new Date();11      assertThat(date1).usingComparator(comparing(Date::getTime)).isEqualTo(date2);12   }13   public void givenTwoDates_whenUsingRecursiveComparisonConfiguration_thenEqual() {14      Date date1 = new Date();15      Date date2 = new Date();16      assertThat(date1).usingRecursiveComparison()17        .ignoringAllOverriddenEquals()18        .isEqualTo(date2);19   }20   public void givenTwoDates_whenUsingRecursiveComparisonConfigurationWithComparator_thenEqual() {21      Date date1 = new Date();22      Date date2 = new Date();23      assertThat(date1).usingRecursiveComparison()24        .ignoringAllOverriddenEquals()25        .withComparatorForType(comparing(Date::getTime), Date.class)26        .isEqualTo(date2);27   }28   public void givenTwoDates_whenUsingRecursiveComparisonConfigurationWithComparatorBuilder_thenEqual() {29      Date date1 = new Date();30      Date date2 = new Date();31      assertThat(date1).usingRecursiveComparison()32        .ignoringAllOverriddenEquals()33        .withComparatorForType(builder().comparatorForType(comparing(Date::getTime), Date.class).build(), Date.class)34        .isEqualTo(date2);35   }36   public void givenTwoDates_whenUsingRecursiveComparisonConfigurationWithComparatorBuilderAndWithin_thenEqual() {37      Date date1 = new Date();38      Date date2 = new Date();39      assertThat(date1).usingRecursiveComparison()40        .ignoringAllOverriddenEquals()41        .withComparatorForType(builder().comparatorForType(comparing(Date::getTime), Date.class).build(), Date.class)42        .isEqualTo(date2, within(1L));43   }44}

toComparator

Using AI Code Generation

1    RecursiveComparisonConfiguration recursiveComparisonConfiguration = new RecursiveComparisonConfiguration();2    recursiveComparisonConfiguration.setIgnoreAllActualNullFields(true);3    recursiveComparisonConfiguration.setIgnoreAllExpectedNullFields(true);4    Comparator<Human> humanComparator = recursiveComparisonConfiguration.toComparator();5    RecursiveComparisonConfiguration recursiveComparisonConfigurationWithPropertyPath = new RecursiveComparisonConfiguration();6    recursiveComparisonConfigurationWithPropertyPath.setIgnoreAllActualNullFields(true);7    recursiveComparisonConfigurationWithPropertyPath.setIgnoreAllExpectedNullFields(true);8    recursiveComparisonConfigurationWithPropertyPath.setIgnoreAllActualNullFieldsForPaths("mother", "father");9    Comparator<Human> humanComparatorWithPropertyPath = recursiveComparisonConfigurationWithPropertyPath.toComparator();10    RecursiveComparisonConfiguration recursiveComparisonConfigurationWithPropertyPath2 = new RecursiveComparisonConfiguration();11    recursiveComparisonConfigurationWithPropertyPath2.setIgnoreAllActualNullFields(true);12    recursiveComparisonConfigurationWithPropertyPath2.setIgnoreAllExpectedNullFields(true);13    recursiveComparisonConfigurationWithPropertyPath2.setIgnoreAllActualNullFieldsForPaths("mother", "father");14    recursiveComparisonConfigurationWithPropertyPath2.setIgnoreAllExpectedNullFieldsForPaths("mother", "father");15    Comparator<Human> humanComparatorWithPropertyPath2 = recursiveComparisonConfigurationWithPropertyPath2.toComparator();16    RecursiveComparisonConfiguration recursiveComparisonConfigurationWithPropertyPath3 = new RecursiveComparisonConfiguration();17    recursiveComparisonConfigurationWithPropertyPath3.setIgnoreAllActualNullFields(true);18    recursiveComparisonConfigurationWithPropertyPath3.setIgnoreAllExpectedNullFields(true);19    recursiveComparisonConfigurationWithPropertyPath3.setIgnoreAllActualNullFieldsForPaths("mother", "father");20    recursiveComparisonConfigurationWithPropertyPath3.setIgnoreAllExpectedNullFieldsForPaths("mother", "father");21    recursiveComparisonConfigurationWithPropertyPath3.setIgnoreAllActualNullFieldsForPaths("mother.name", "father.name");

toComparator

Using AI Code Generation

1import static org.assertj.core.api.Assertions.*;2import static org.assertj.core.api.recursive.comparison.RecursiveComparisonConfiguration.*;3import org.assertj.core.api.recursive.comparison.*;4import org.junit.jupiter.api.Test;5import java.util.*;6class TestAssertJ {7    void test() {8        List<String> list1 = Arrays.asList("a", "b", "c");9        List<String> list2 = Arrays.asList("c", "b", "a");10        assertThat(list1).usingRecursiveComparison()11                .ignoringFields("id")12                .withComparatorForFields(new Comparator<List<String>>() {13                    public int compare(List<String> o1, List<String> o2) {14                        return o1.size() - o2.size();15                    }16                }, "list")17                .isEqualTo(list2);18    }19}20at org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:39)21at org.junit.jupiter.api.AssertEquals.failNotEqual(AssertEquals.java:208)22at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:163)23at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:148)24at org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:109)25at TestAssertJ.test(TestAssertJ.java:24)26List<String> list1 = Arrays.asList("a", "b", "c");27List<String> list2 = Arrays.asList("c", "b", "a");28assertThat(list1).usingRecursiveComparison()29        .ignoringFields("id")30        .withComparatorForFields(new Comparator<List<String>>() {

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