Moderne licensed

Migrate JUnit asserts to AssertJ

Recipe IDorg.openrewrite.java.testing.assertj.JUnitToAssertjArtifactorg.openrewrite.recipe:rewrite-testing-frameworks

AssertJ provides a rich set of assertions, truly helpful error messages, improves test code readability. Converts assertions from org.junit.jupiter.api.Assertions to org.assertj.core.api.Assertions. Will convert JUnit 4 to JUnit Jupiter if necessary to match and modify assertions.

Composite recipeassertjtestingMSAL

Add to your build

Get a download tokenThis recipe is Moderne licensed, so the token must belong to a Moderne customer. It replaces YOUR_DOWNLOAD_TOKEN below.

~/.gradle/gradle.properties

codeGenomeUsername=you@example.com
codeGenomeToken=YOUR_DOWNLOAD_TOKEN

build.gradle.kts

plugins {
    id("org.openrewrite.rewrite") version("latest.release")
}

rewrite {
    activeRecipe("org.openrewrite.java.testing.assertj.JUnitToAssertj")
}

repositories {
    mavenCentral()
    maven {
        url = uri("https://artifacts.codegenomeproject.org/maven")
        credentials {
            username = providers.gradleProperty("codeGenomeUsername").get()
            password = providers.gradleProperty("codeGenomeToken").get()
        }
    }
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-testing-frameworks:3.47.0")
}

Then run

./gradlew rewriteRun

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.JUnitToAssertj

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

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

Definition

This recipe runs the following recipes in order.

JUnit 5 best practicesorg.openrewrite.java.testing.junit5.JUnit5BestPractices
JUnit assertArrayEquals to assertJorg.openrewrite.java.testing.assertj.JUnitAssertArrayEqualsToAssertThat
JUnit assertEquals to AssertJorg.openrewrite.java.testing.assertj.JUnitAssertEqualsToAssertThat
JUnit assertFalse to AssertJorg.openrewrite.java.testing.assertj.JUnitAssertFalseToAssertThat
JUnit assertNotEquals to AssertJorg.openrewrite.java.testing.assertj.JUnitAssertNotEqualsToAssertThat
JUnit assertNotNull to AssertJorg.openrewrite.java.testing.assertj.JUnitAssertNotNullToAssertThat
JUnit assertNull to AssertJorg.openrewrite.java.testing.assertj.JUnitAssertNullToAssertThat
JUnit assertSame to AssertJorg.openrewrite.java.testing.assertj.JUnitAssertSameToAssertThat
JUnit assertTrue to AssertJorg.openrewrite.java.testing.assertj.JUnitAssertTrueToAssertThat
JUnit fail to AssertJorg.openrewrite.java.testing.assertj.JUnitFailToAssertJFail
JUnit AssertThrows to AssertJ exceptionTypeorg.openrewrite.java.testing.assertj.JUnitAssertThrowsToAssertExceptionType
Convert try-catch-fail blocks to AssertJ's assertThatThrownByorg.openrewrite.java.testing.assertj.JUnitTryFailToAssertThatThrownBy
JUnit assertInstanceOf to AssertJorg.openrewrite.java.testing.assertj.JUnitAssertInstanceOfToAssertThat
Add Gradle or Maven dependencyorg.openrewrite.java.dependencies.AddDependency
Refaster rules that replace JUnit APIs with AssertJ equivalentstech.picnic.errorprone.refasterrules.JUnitToAssertJRulesRecipes

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