💥 Breaking Changes

Core

• Delegate OptionalDouble value comparison to Double.compare in hasValue assertion #3411

  Details

  This fixes the comparison of NaN values which wasn't working the way the hasValue Javadoc describes.

  The previous behavior can be obtained with getAsDouble:

  assertThat(OptionalDouble.of(Double.NaN).getAsDouble()).isSameAs(Double.NaN);

🚫 Deprecated

Core

• Deprecate ObjectAssertFactory in favor of Assertions.assertThat(Object)
• Deprecate AssertionErrorFactory in favor of AssertionErrorCreator
• Deprecate catchThrowableOfType(ThrowingCallable, Class) in favor of catchThrowableOfType(Class, ThrowingCallable) #2823
• Deprecate assertThat(Iterable, AssertFactory), assertThat(Iterable, Class) and their respective then variants #3453

✨ New Features

Core

• Support multiple AfterAssertionErrorCollected callbacks #3313
• Add InstanceOfAssertFactory for Set instances #3325
• Add doesNotContainKey and doesNotContainKeys to Guava Multimap assertions #3334
• Add assertions for JDK YearMonth type #3142
• Add TemporalAssert type #3404
• Add ignoringFieldsOfTypesMatchingRegexes #3369
• Add fail(Throwable) and fail() variants #3204
• Add isPrivate to Class assertions
• Add doesNot[Start/End]WithWhitespace methods to CharSequence assertions #3441
• Add createAssert(ValueProvider) to AssertFactory #3377
• Add values() navigation method to AbstractMapAssert #3297
• Add bytes()/bytes(Charset)/bytes(String) navigation methods to AbstractStringAssert #3232
• Add doesNotThrowAnyExceptionExcept to AbstractThrowableAssert #3261
• Add hasPermittedSubclasses to Class assertions #3316
• Add isUnmodifiable to Iterator assertions #3477

🐛 Bug Fixes

Core

• Preserve original order of elements when returning duplicates on doesNotHaveDuplicates #3333
• Make isNotEqualTo(boolean) pass when actual is null #3343
• Fix isEqualTo comparison of Timestamp instances with Instant #3410
• Fix Instant conversion with Date assertions #3467
• Rebuild default date formats used to parse strings as dates when default timezone or lenient flag changes #3382

⚡ Improvements

• Avoid duplicating maven-javadoc-plugin configuration and CSS files #3371
• Favor additionalOption entries in maven-javadoc-plugin

Core

• Fix typo in Javadoc #3365
• Improve AssertFactory Javadoc
• Add Throwable stack trace to ShouldHaveCauseExactlyInstance #3351
• Fix typo #3422
• Add Throwable stack trace to ShouldHaveCauseInstance #3392
• Implement boolean assertions directly in AbstractBooleanAssert and remove Booleans internal class
• Remove stack trace elements triggered by AssertJ in addition to AssertJ elements #3449

🔨 Dependency Upgrades

Core

• Upgrade to Byte Buddy 1.14.16 #3487
• Upgrade to JUnit BOM 5.10.2 #3357

Guava

• Upgrade to Guava 33.2.0-jre #3454

❤️ Contributors

Thanks to all the contributors who worked on this release:

@Achitheus @csct3434 @armandino @sbrannen @shaikhu @ryber @ranjitshinde91 @tmvlpl @valery1707 @izeye @yyytir777 @pbacz @biergit @Banuelorigni @java-coding-prodigy @vlsi @hazendaz @Kruschenstein @etrandafir93 @pbacz @dehasi