AssertJ best practices

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.java.testing.assertj.Assertj

If the recipe isn’t available locally, install it with:

mod config recipes jar install org.openrewrite.recipe:rewrite-testing-frameworks:3.43.0

Definition

This recipe runs the following recipes in order.

• Change typeorg.openrewrite.java.ChangeType
• Change typeorg.openrewrite.java.ChangeType
• Change typeorg.openrewrite.java.ChangeType
• Migrate Hamcrest assertions to AssertJorg.openrewrite.java.testing.hamcrest.MigrateHamcrestToAssertJ
• Migrate Google Truth to AssertJorg.openrewrite.java.testing.truth.MigrateTruthToAssertJ
• Migrate Fest 2.x to AssertJorg.openrewrite.java.testing.assertj.FestToAssertj
• Migrate JUnit asserts to AssertJorg.openrewrite.java.testing.assertj.JUnitToAssertj
• Migrate TestNG assertions to AssertJorg.openrewrite.java.testing.testng.TestNgToAssertj
• Adopt AssertJ Duration assertionsorg.openrewrite.java.testing.assertj.AdoptAssertJDurationAssertions
• Replace AbstractDateAssert#isEqualToIgnoringMillis(java.util.Date) by by isCloseTo(Date, long)org.openrewrite.java.testing.assertj.IsEqualToIgnoringMillisToIsCloseToRecipe
• Decompose assertThat on conjunctions into separate assertionsorg.openrewrite.java.testing.assertj.DecomposeConjunctionAssertion
• Simplify AssertJ chained assertionsorg.openrewrite.java.testing.assertj.SimplifyChainedAssertJAssertions
• Shorten AssertJ assertionsorg.openrewrite.java.testing.assertj.SimplifyAssertJAssertions
• Simplify AssertJ assertions on instanceof expressionsorg.openrewrite.java.testing.assertj.SimplifyAssertJInstanceOfAssertion
• Simplify AssertJ assertions on == and != comparisonsorg.openrewrite.java.testing.assertj.SimplifyAssertJEqualityAssertion
• Simplify AssertJ assertions with hasSize argumentorg.openrewrite.java.testing.assertj.SimplifyHasSizeAssertion
• Simplify literal-first AssertJ size assertions to hasSizeorg.openrewrite.java.testing.assertj.SimplifyHasSizeFromIsEqualToAssertion
• Simplify AssertJ assertions on an array's lengthorg.openrewrite.java.testing.assertj.SimplifyArrayLengthAssertion
• Simplify AssertJ assertions on SequencedCollectionorg.openrewrite.java.testing.assertj.SimplifySequencedCollectionAssertions
• Simplify assertThat(collection.stream().map(...)) to assertThat(collection).extracting(...)org.openrewrite.java.testing.assertj.SimplifyStreamMapToExtracting
• Refaster rules related to AssertJ assertions over BigDecimalstech.picnic.errorprone.refasterrules.AssertJBigDecimalRulesRecipes
• Adopt AssertJ BigInteger Assertionsorg.openrewrite.java.testing.assertj.AssertJBigIntegerRulesRecipes
• AssertJBooleanRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJBooleanRulesRecipes
• Adopt AssertJ Byte Assertionsorg.openrewrite.java.testing.assertj.AssertJByteRulesRecipes
• AssertJCharSequenceRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJCharSequenceRulesRecipes
• AssertJComparableRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJComparableRulesRecipes
• Adopt AssertJ Double Assertionsorg.openrewrite.java.testing.assertj.AssertJDoubleRulesRecipes
• AssertJEnumerableRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJEnumerableRulesRecipes
• AssertJDurationRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJDurationRulesRecipes
• Adopt AssertJ Float Assertionsorg.openrewrite.java.testing.assertj.AssertJFloatRulesRecipes
• AssertJInstantRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJInstantRulesRecipes
• Adopt AssertJ Integer Assertionsorg.openrewrite.java.testing.assertj.AssertJIntegerRulesRecipes
• AssertJIterableRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJIterableRulesRecipes
• AssertJIteratorRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJIteratorRulesRecipes
• Adopt AssertJ Long Assertionsorg.openrewrite.java.testing.assertj.AssertJLongRulesRecipes
• AssertJMapRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJMapRulesRecipes
• AssertJNumberRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJNumberRulesRecipes
• AssertJObjectRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJObjectRulesRecipes
• AssertJOptionalRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJOptionalRulesRecipes
• AssertJPathRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJPathRulesRecipes
• Adopt AssertJ Short Assertionsorg.openrewrite.java.testing.assertj.AssertJShortRulesRecipes
• AssertJPrimitiveRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJPrimitiveRulesRecipes
• AssertJRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJRulesRecipes
• AssertJStringRules Refaster recipestech.picnic.errorprone.refasterrules.AssertJStringRulesRecipes
• Refaster rules related to AssertJ assertions over expressions that may throw a Throwable subtypetech.picnic.errorprone.refasterrules.AssertJThrowingCallableRulesRecipes
• Collapse consecutive assertThat statementsorg.openrewrite.java.testing.assertj.CollapseConsecutiveAssertThatStatements
• Collapse assertThat followed by return into single statementorg.openrewrite.java.testing.assertj.ReturnActual
• Simplify redundant AssertJ assertion chainsorg.openrewrite.java.testing.assertj.SimplifyRedundantAssertJChains
• Migrate AssertionsForClassTypes and AssertionsForInterfaceTypes to Assertionsorg.openrewrite.java.testing.assertj.MigrateAssertionsForClassAndInterfaceTypes
• Statically import AssertJ's assertThatorg.openrewrite.java.testing.assertj.StaticImports

Data tables

Structured output this recipe can produce.

• Maven metadata failuresAttempts to resolve maven metadata that failed.org.openrewrite.maven.table.MavenMetadataFailures
• Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
• Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
• Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
• Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats